JPL Imaging Radar Bulletin Board

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QUESTION 125: I'm looking for information on DEM extraction from AIRBORNE RADAR using either interferometry or overlapping techniques. Which is the preferred method? What systems have been developed? What software is available? 9/19/95 - 0 responses

Andrew Dyk, Geomatics International, andrew@geomatics.com

QUESTION 124: I'm a former Air Force imagery analyst. I currently work in a different field. I love working with multisensor imagery. Is there anything I can do to work in my favorite field? My 25 years' experience covers virtually every type of imaging system in use during the period. I still find the human brain and 'mark-1 eyeball' the best analytical tool for interpreting and extracting information from multi- sensor imagery! 9/18/95 - 0 responses

Mike Weatherford (MSgt, USAF, Ret), mweather@rmii.com

QUESTION 123: I recently received a SIR-C precision data. How do I extract the intesnsity information from the 5 byte/pixel data stream. In other word, which byte or bytes do I need to keep for the purpose of displaying image? 9/15/95 - 2 responses - [last response 9/20/95]

Shyuer-Ming Shih, Institute of Oceanography, National Taiwan University, mingshih@ccms.ntu.edu.tw

QUESTION 122: Hi. Im a periodontist. I read recently that someone has invented a miniature radar Question 1. will radar penetrate soft tissue and show up countours in underlying bone Question2 If anyone knows the inventors name/address please email me Thanks 9/15/95 - 1 response - [last response 9/20/95]

kevin frisken, Periodontist, Kevin.Frisken@anat.utas.edu.au

QUESTION 121: I am a PhD student in the field of digital signal processing. My main interest is the wavelet transforms and their applications. I would like to know the status of WT regarding radar imaging applications. Any help will be greatly appreciated. 9/14/95 - 0 responses

A. Farras Abdelnour, Polytechnic University, Ugarit@aol.com

QUESTION 120: Photo Researcher in URGENT need of the following images. 1. Galaxy via X-rays (from EOSAT). 2. The Galaxy via Electric waves. 3. Galaxy via infrared waves (IRAS). 4. Beta Pictoric(8-Pic)via infrared rays(from IRAS). Any on the web? Deadline is Friday, any help appreciated. Thanks! 9/13/95 - 1 response - [last response 9/13/95]

Frank Rossotto, STOCKTREK, trek@epix.net

QUESTION 119: Does anyone know of a good source of info explaining which surface features de-polarize radar returns, and why? 9/ 8/95 - 0 responses

Henry Borysewicz, Univ. of North Dakota, borysewi@BADLANDS.NODAK.EDU

QUESTION 118: Is it possible to extract geopositional info (preferably Lat. & Long.) directly from the SIR-C SML product? If not, is there an easy way to add this positional info to the image? 9/ 8/95 - 1 response - [last response 9/11/95]

Henry Borysewicz, Univ. of North Dakota, Borysewi@badlands.nodak.edu

QUESTION 117: I am a postgraduate student working on mapping of vegetation using SAR. Could somebody tell me where and how can I get a copy of 1) the MIMICS software and 2)the "tree vectorization algorithm" developed by the Canadian Centre for Remote Sensing? 9/ 6/95 - 2 responses - [last response 9/11/95]

Marvilyn P. Palaganas, School of Geography, UNSW, Australia, P2031264@geog.unsw.edu.au

QUESTION 116: I am a grad student relatively new to SAR research, so I apologize in advance if this is an ignorant question. My only experience with SAR imagery is over land, (esp. wetlands). In some cases I have found strong sigma0-VV responses over wetlands at large incidence (~40°). I thought this may be due to vertically oriented vegetation growth until I saw the same strong sigma0-VV at large incidence over open ocean. I expected calm ocean to be nearly specular, with sigma0-VV roughly equal to sigma0-HH. I thought my image might simply be a special case with waves oriented to produce the strong sigma0-VV until I noticed that in some references, (Ulaby, Moore, Fung, Microwave Remote Sensing..., vol. 2) that sigma0-VV is predicted to be stronger than sigma0-HH at large incidence over ocean. In this reference, nothing was mentioned about a particular wave orientation. So what is responsible for the sigma0-VV response that I get over the ocean? 9/ 6/95 - 1 response - [last response 9/ 7/95]

Clint Slatton, University of Texas at Austin, slatton@poseidon.csr.utexas.edu

QUESTION 115: can anyone tell me what a "SATURATED ADIABATIC LAPSE RATE" is? I believe it is an aviation term. 9/ 2/95 - 3 responses - [last response 9/ 3/95]

TODD IN BRISBANE

QUESTION 114: Hi, I have a small question about the resolution of ERS-1 SAR images. What is the difference between the pixel spacing and the resolution of the images. For exemple the full-resolution ERS-1 images has a pixel- spacing equal to 12.5m and a resolution of 30m. Should these two values be the same and which one gives me the ground dimension of each pixel (in order to get some measures of ground features). Thank you very much for your help. 8/31/95 - 1 response - [last response 8/31/95]

Luc Chouinard, McGill University, chouinar@alpha.civil.mcgill.ca

QUESTION 113: Wher can I get information about ship wake detection using SAR images ? 8/31/95 - 2 responses - [last response 9/14/95]

Federico Rossi, Signal Processing Lab , University of Cagliari , ITALY, rossif@vaxca3.unica.it

QUESTION 112: I have been studying the Kliuchevskoi Volcano optical radar comparison and cannot work out why the snow is so red i.e. gives such high backscatter in the L-band, HH polarisation. Can someone help me ? 8/31/95 - 1 response - [last response 8/31/95]

Mark Mostert, Royal Institute of Technology, Stockholm, markmost@l.kth.se

QUESTION 111: Where can I get information about the data processing algorithms that were used for SIR-C/X-SAR data? 8/28/95 - 1 response - [last response 9/ 1/95]

Anita Mogili, Remote Sensing Lab, Univ of Kansas, mogili@rsl.ukans.edu

QUESTION 110: What is the difference between radiometric and geometric resolution of SAR images Also how can I show that resolution of one image is better than the other in the absence of a test reflector in the image. Thanks PS: I will appreciate if answers can be sent to me by e-mail as well. 8/27/95 - 2 responses - [last response 9/15/95]

Noaman Ahmed, Strathclyde University, Glasgow, Scotland, noaman@spd.eee.strath.ac.uk

QUESTION 109: L am looking at the means to reduce speckle noise in SAR imaging Are there any improved multi look processing techniques avaliable to process the raw data and reduce speckle at the same time. This technique should be done before image enhancement using image/adaptive filters. 8/24/95 - 0 responses

Alan Lay, eng20210@leonis.nus.sg

QUESTION 108: I am researching CIVIL WAR entrenchments in Virginia. I've heard that aerial radar is helpful in identifing this type of feature which is no longer visible from the surface due to farming etc. How can I find appropriate images for my search area if they are available. 8/18/95 - 4 responses - [last response 8/29/95]

Greg Boles, NISE EAST DET NORFOLK, G_BOLES@NISE-P.NOSC.MIL

QUESTION 107: who knows anything about the professional basketball player named grant hill? 8/17/95 - 1 response - [last response 9/13/95]

QUESTION 106: I am looking for information on how satellite SAR radars use on-board chirp-based, or white-noise-based, test signals to characterize the satellite receive chain for data calibration purposes. 8/16/95 - 1 response - [last response 8/22/95]

Steve Spenler, sspenler@hookup.net

QUESTION 105: I'm looking for a contact at the Naval Air Warfare Center, Warminster PA who can provide me with information on their P3 SAR. I have a pair of images taken as part of an Ohio EPA experiment but I'm having trouble reading the files. Has anybody ever heard of this platform or have any contacts at NAWC Warminster who might be kind enough to help out? So far, I've had no response from them. Any info. appreciated! 8/14/95 - 1 response - [last response 9/ 7/95]

Kevin R. Duemmel, Engineer, OSU Astronomical Instrumentation Facility, duemmel@ohstpy.mps.ohio-state.EDU

QUESTION 104: uuuuuuu 8/11/95 - 0 responses

QUESTION 103: I am a graduate student in Environmental Engineering and I am investigating the use of SAR data to determine subsurface water content. I am considering using a neural net classifier to assess the depth and level of the water content over vaying terrain. I would like to know if there are tools already avilable to help me do this and I would like to know of other researchers working in this area. Specific Citations would be very helpful. 8/ 9/95 - 1 response - [last response 8/10/95]

George A. Madrid jr., Washinton University in St. Louis, gamadrid@artsci.wustl.edu

QUESTION 102: I am interested in antenna reflector substrates. Advanced reflector substrates are being developed from composites of ceramics and metals in order to decrease weight and power requirements. Does anyone have specific details on some of these reflector dish configurations/designs? 8/ 9/95 - 0 responses

joe robichaud, ssg1@ssginc.com

QUESTION 101: I have found that one of the flights went over an area of interest, but cannot find images from that swath. Is there an index of available images that are given by lat/long? The images that my students have found are certainly interesting, but I really need to find an index! Help! 8/ 8/95 - 1 response - [last response 8/ 9/95]

Jon Renner, Sisters MS/HS, pilotjon@interserv.com

QUESTION 100: Does anyone know where I can locate DEMs for Argentina? 8/ 8/95 - 0 responses

Mark Lucas, Harris Corporation, mlucas@alcatraz.ess.harris.com

QUESTION 99: I'm graduating at the University of Catania (Italy). Does anyone know how i can obtain the interferometric fringes from two (complex) data sets of the same place taken with tree days of difference? 8/ 7/95 - 1 response - [last response 8/10/95]

Alfio Finocchiaro, Facolta' di Ingegneria (University of Catania), alfio@indy.iit.unict.it

QUESTION 98: We want to calibrate P-band, JPL AIRSAR data, processed by processor version 3.55 and 3.56 (acquired in 1991 and 1990 respectively over Reynolds Creek, Boise, Idaho). We have already calibrated C & L band using corner reflectors (CR) in POLCAL 4.0. But CR technique can not applied to P band. We have calibrated P band data of 1989 JPL AIRSAR data, processed by processor 2.1, using auto calibration in POLCAL 4.0. POLCAL does not support auto cal for data processed other than processor 2.1. Has anybody tried calibration of P-band? 8/ 5/95 - 1 response - [last response 8/ 7/95]

Sudhir Kumar Goyal, Graduate Student, Univ. of Idaho, working for USDA-ARS, Boise, sgoyal@nwrc.ars.pn.usbr.gov

QUESTION 97: What are the methods to reduce speckle noise in SAR images? 8/ 5/95 - 1 response - [last response 8/ 5/95]

Alan Lay, Undergrad at National University Singapore

QUESTION 96: I'm graduating in Electrical Engineering and I'm looking for information about Wake detection on SAR Images. Can anyone help me ? 8/ 3/95 - 1 response - [last response 8/14/95]

Federico Rossi, Department of Electrical and Electronic Engineering, rossif@vaxca3.unica.it

QUESTION 95: I am looking for a scientist that was involved with radar at JPL several years ago. His name is Jeff Plescia. He worked on the Venus and Mars mapping projects. We both attended USC Geology in the late 1970's. Does anyone have any information about Jeff. 7/31/95 - 2 responses - [last response 9/ 3/95]

John Shepherd, TRW, johnshepherd@trw.com

QUESTION 94: Where is it possible to obtain radar images of the Bondhusbreen Glacier and valley near Sundal Norway? Eight students from the USA will be joining students from British school for a study of the valley. We are designing a field studies associated with global energy budget and ground water and require any visuals that we can obtain. 7/26/95 - 3 responses - [last response 7/27/95]

Thomas C. Arnold, State College Schools, State College, PA, arnold@essc.psu.edu

QUESTION 93: What make's Imaging radar different from regular radar? 7/26/95 - 1 response - [last response 7/26/95]

Russell C Sipe , none, none

QUESTION 92: I'm a UC Davis water management specialist working on something called regulated deficit irrigation. It's the practice of purposely depriving plants of water during stress-tolerant periods in order to save water while possibly enhancing some aspect of production. For example, we identified that mild stress during late July in almond can reduce the incidence of hull rot fungus. I have 3 experimental field sites in the San Joaquin Valley where different irrigation treatments result in tree water stress. We are monitoring this stress from the ground with leaf/stem water potential and stomatal conductance measurements. I would like to see if these stresses express themselves in something that can be remotely sensed. I've tried using hand-held infrared thermometers from 12 ft ladders to monitor canopy temperature but there is a lot of variability. I'm thinking something from an airplane would be much better. Each replication is approximately 75 x 120 ft. and contains 8-30 trees. I believe there are some private consultants who offer fly-over services using some type of infrared film. However, I've never been satisfied that they know what they are measuring. This would be an ideal opportunity for someone working on developing remote sensors to verify their utility with ground based measurements. 7/24/95 - 1 response - [last response 7/25/95]

Dave Goldhamer, Dept. of LAWR, Univ. of CA, Davis, Dave@uckac.edu

QUESTION 91: Can anyone tell me the power output of the SIR-C radar? 7/21/95 - 1 response - [last response 7/25/95]

Drew Hartigan, U.S. Naval Postgraduat School, hartigan@physics.nps.navy.mil

QUESTION 90: At Canada Centre for Remote Sensing we have developed and tested a geometric correction model to geocode SIR-C/X-SAR images with DEM. The model also allow us to integrate images acquired in different imaging configuration. The model takes into account the parameters of the sensor, of the space shuttle and of the earth. We want to write a user friendly interface to extract the ancillary data (_ldr_ceos_ascii) and process them accordingly to the physical parameters of the geometric coorection model. The parameters that are essential for the model are the ephemeris data which are given in the "GREENWICH TRUE OF DATA" reference coordinate system. What is this coordinate system? What are the X,Y,Z axis related to this system? Where is the origin? Moreover, research group that are interested in the model should fell free to contact us... 7/19/95 - 0 responses

Yves Crevier / Thierry Toutin, Canada Centre for Remote Sensing, crevier@ccrs.nrcan.gc.ca

QUESTION 89: I thought one of the things radar measured was distance, why then the need for IFSARE? If one knows the x,y,z of a transmitter, why can't elevations be determined from that? 7/19/95 - 2 responses - [last response 8/ 9/95]

kapolka@erim.org

QUESTION 88: Is there a good source of SIR-A and SIR-B background information leading up to the development of SIR-C anywhere within the JPL home page? Thanks 7/ 5/95 - 3 responses - [last response 7/18/95]

Drew Hartigan, Naval Postgraduate School, hartigan@physics.nps.navy.mil

QUESTION 87: What type of imaging radar, and where may I find imaging radar with the lowest vertical relolution available. I am intersted in producing/ obtaining a DEM for a relatively flat area in northeastern Louisiana. 6/28/95 - 1 response - [last response 6/28/95]

Rodney L. Young, Louisiana State University, ryoung@unix1.sncc.lsu.edu

QUESTION 86: I'm graduate student working on forest ecology. I recently noticed that the SIR-C image Mt. Everest overlaps my study site. Is anyone working with this image? Also, where can I get more info on the field data test sites referred to in the last sentence of the blurb. Thanks... 6/27/95 - 1 response - [last response 6/29/95]

Robert Zomer, UC Davis - Ecology Graduate Group, rjzomer@ucdavis.edu

QUESTION 85: Are there some high-quality optical images of the Ubar site? For example, a landsat view covering the SAR image and some air and ground shots? 6/27/95 - 1 response - [last response 6/28/95]

David Long, BYU ECEn Dept., long@ee.byu.edu

QUESTION 84: Once I am in the JPL Imaging Radar Home Page (http//southport.jpl.nasa.gov/ How can I get to see the SIR-A Coverage Map? 6/22/95 - 1 response - [last response 6/22/95]

Carlos A. Iudica, casaiud@flmnh.ufl.edu

QUESTION 83: Where can I find the shareware software for viewing Level 1B digital satelite data? thanks in advance durant greenwood oryx energy dallas tx. 214.715.8442 xhrrdg@oryx.com 6/22/95 - 3 responses - [last response 6/28/95]

durant greenwood, bike rider, xhrrdg@oryx.com

QUESTION 82: I would like information on the general extent of AIRSAR imagery coverage of the Pacific Northwest (Western Washington and Oregon and Northern California). 6/22/95 - 2 responses - [last response 7/ 5/95]

Lisa Nelson, NBS-MESC, nelsonl@detox.mesc.nbs.gov

QUESTION 81: If I have the coordinates of two places of interest (for my research) where can I get info about any type of remote sensing image available for those places? 6/20/95 - 3 responses - [last response 6/28/95]

Carlos A. Iudica, casaiud@flmnh.ufl.edu

QUESTION 80: I would like to know if it is possible to request a geographical position (lat/long) to be taken in the next or in any next radar mission? 6/20/95 - 1 response - [last response 6/21/95]

Carlos A. Iudica, Graduate Student at Zoology Dept-Univ. of Florida, casaiud@flmnh.ufl.edu

QUESTION 79: The previous question 79 was deleted because it did not refer to anything related to the imaging radar program at JPL, and because of possible legal issues (that I am ignorant of). His question was forwarded to the JPL Public Information Office (newsdesk@jpl.nasa.gov). They will be sending him an email reply to his question. 6/19/95 - 0 responses

bruce chapman, jpl, bruce.chapman@jpl.nasa.gov

QUESTION 78: Hallo there, two questions if I may, I don't know if this is the right place to put them in: 1. What's the status of NASA's IN-STEP programme, especially the topic of inflattable radar antenna's? 2. As you might know, a spaceborne P-band SAR does not exist at the moment. Is there an interest or support in a P-band SAR system (spaceborne)? In the Netherlands there is a great interest especially for forest monitoring. Please send me some of your suggestions/comments. 6/16/95 - 2 responses - [last response 6/21/95]

Wim Looyen, National Aerospace Laboratory NLR, looyen@nlr.nl

QUESTION 77: Could there not be some creative usea of real time video-conferencing at the JPL radar page or related NASA sites, using QuickCam and CU-SeeMe freeware? tom @ emerald 6/11/95 - 3 responses - [last response 6/18/95]

QUESTION 76: The May 30, 1995 issue of Eos (Transactions of AGU) has a lead article on the TOPSAT mission. Where is there additional information about this mission, on the Web? How does the funding look for it? Has it entered Phase C/D? What launch vehicle is expected to be used? Thanks. 6/ 9/95 - 2 responses - [last response 6/12/95]

Harold Geller, CIESIN, hgeller@ciesin.org

QUESTION 75: Are we getting closer to the release of updated mac Sigma(0) software that was promised this winter -- this would allow non-mainframe people to process primary radar data. tom @ emerald 6/ 5/95 - 1 response - [last response 6/ 9/95]

QUESTION 74: Dear colleaques, I would be very oblieged to anyone who could send me information about the possibility of detecting "LEAKS IN BURIED WATER PIPELINES" by using RADAR images. 6/ 2/95 - 1 response - [last response 6/ 5/95]

Dr. Nickolaos Soulakellis, Dept. of HUMAN GEOGRAPHY, Univ. of the AEGEAN, LESBOS, GREECE, nsoul@geo.aegean.gr

QUESTION 73: Does anyone know if there are current studies using SIR-C to to delineate soils/identify soil types? If so where can I obtain information? 6/ 1/95 - 1 response - [last response 6/ 5/95]

Rodney L. Young, L.S.U. -Graduate Student-Agronomy, ryoung@tiger.lsu.edu

QUESTION 72: Does anyone know where I can locate subterranean satellite images of Western Sahara; between Algeria, Mauritania, Morocco; (between 20 - 28 degrees N. Latitude and between 7 - 16 degrees W Longitude)?. Thanks very much. Sarah_Lum@Brown.edu 5/31/95 - 1 response - [last response 5/31/95]

Sarah Lum, Brown University , Sarah_Lum@Brown.edu

QUESTION 71: I read in the paper that NASA wants to lay off 28,000 people. Would this adversely impact the radar imaging program and its supporting services? 5/22/95 - 2 responses - [last response 6/ 1/95]

QUESTION 70: For those of you with netscape1.1, how many of you like or dislike the green background color? I kind of like it myself, because I think it makes the home page stand out, and , if I made ALL the pages with this background color, you would instantly know that you were at the imaging radar home page, and not somewhere else, like the EROS data center, or the JPL PIO site, etc. But, I have been getting some mixed notices. What do you all think??? should I change the color? get rid of backgrounds all together? keep it? 5/19/95 - 7 responses - [last response 6/13/95]

bruce chapman, jpl, bruce.chapman@jpl.nasa.gov

QUESTION 69: I just downloaded a Sir-C Radar image to my Mac powerbook 520. Also Downloaded NIH Image software to view it. I have no idea how to use this. I have tried to import to no avail. Can someone help with setting for NIH Image?? Thanks 5/14/95 - 1 response - [last response 5/16/95]

William S. Hecht, Gros Morne, wshecht@mailbox.syr.edu

QUESTION 68: I wonder if somebody knows some references relating SAR imaging and Time-Frequency analysis, specially if I can find them in digital format. Thanks in advanced: G. Thomas Email(2) gthomas@campus.chi.itesm.mx 5/11/95 - 1 response - [last response 5/14/95]

Gabriel Thomas, University of Texas at El Paso, thomas@agua.ece.utep.edu

QUESTION 67: A while back, you gave us the ftp site for TOPSAR digital elevation data. The files there were excellent, but represented only a few of the TOPSAR lines. I guess what I am trying to say is, where can I find the TOPSAR file "2 Jun 92 Cascade Head 132-1 45-03.0 N 123-57.5 W 132" ?

tom @ emerald 5/ 9/95 - 3 responses - [last response 5/12/95]

QUESTION 66:
The information newly provided in Standard Data Products - Processed List is most welcome. However, I am not nuts about it being sorted by data take. I would have preferred a sort by country, state, and site. When I uploaded the download into MS Word as formatted text, to my horror, I found that the list was only partially tab-delimited, that is, I could not drop it into a database or spreadsheet without some serious correction tedium.
Is it not possible to have the original table sortable by clicking on the column header, using cgi to drive a freeware list sorter?

tom@emerald 5/ 8/95 - 3 responses - [last response 5/20/95]

QUESTION 65: Need info on March Popular Science "Radar on a chip" developed by Tom McEwan at Lawrence Livermore Lab. My son is a freshman in high school and has done several sensor, microcontroller projects. Need to find out if sample chips can be procurred. thank you 5/ 7/95 - 5 responses - [last response 8/31/95]

Jeff Halbur, halbur@netins.net

QUESTION 64: I am trying to get information on Sea Surface Temps (SST). I am not sure what sats pick up this information, but I saw this area as a place to begin asking questions. There are places where SST charts are available, but the GIFs that exist are of too large an area. Is there a place to get the latest SST charts for smaller areas? Is there a place to get the data and/or a program that will convert that data into a nice color image? Any help is greatly appreciated. 5/ 3/95 - 8 responses - [last response 5/18/95]

Chris Malinowski, Curious onlooker, chris.malinowski@ssa.gov

QUESTION 63: I have recently come upon the SIR-C image library where I found an image of the area in Chiapas Mexcio where I have been working. I am an archaeology graduate student and my dissertation involves doing large land surveys of some of the areas covered by your SIR-C images. How can I go about accessing the higher resolution images? 5/ 1/95 - 1 response - [last response 5/ 2/95]

Marcello-Andrea Canuto, University of Pennsylvania, mcanuto@mail.sas.upenn.edu

QUESTION 62: I am interested in applying radar image processing algorithms to side-scan sonar images of the seabed. In particular, I would like to machine classify different bottom types. Being a geologist with zero programming skills, is there anyone out there who has some ideas on this matter? I have a feeling that fractal techniques to quantify texture is the way to go. My intention would be to use a neural net classifierr to segment imagery based on fractal signatures. This would require training the classifier with example "spectra". I am involved in marine diamond exploration off the west coast of southern Africa. We use a heap of side-scan sonar imagery to map spotential diamond trap sites. Manual interpretation is rather tedious, hence this enquiry. 4/25/95 - 1 response - [last response 5/ 2/95]

Andrew Terhorst, Managing member, TerraMare Remote-Sensing, remsense@iafrica.com

QUESTION 61: SIR-C employed a data reduction scheme called Block Adaptive Quantization which reduced the data volume from 8 bits/sample to 4 bits/sample. I am interested in finding out more about the scheme and any studies that may have been done regarding the impact of the data compression on applications such as SAR interferometry. Can anybody point me in the right direction? 4/21/95 - 2 responses - [last response 5/11/95]

Ian McLeod, UBC, ianmc@ee.ubc.ca

QUESTION 60: Bulletin board maintenance took place today and you'll notice some questions are missing. We decided the backlog of questions was getting too big, so some questions were moved to the education BB (a more appropriate place for them), some questions were put into an archive, and some questions were deleted. You will be able to access the archive soon. 4/20/95 - 0 responses

S. Okonek, JPL, sharon.okonek@jpl.nasa.gov

QUESTION 59: We are interested in speckle filtering techniques applied to radar images. For evaluation of these procedures our student project needs some unfiltered (raw) images. Does anybody have an idea how we can get this type of data ? 4/18/95 - 6 responses - [last response 4/26/95]

Tamas Doka, dtamas@cc.matav.hu

QUESTION 58: We have set up a contest to make the most interesting image from SIR-C data! If you have any comments or suggestions about it, I hope you will pass them along as responses to this question! 4/17/95 - 11 responses - [last response 5/23/95]

Bruce Chapman, JPL, bruce.chapman@jpl.nasa.gov

QUESTION 57: I need lunar elevation data. High resolution is not necessary, but the data should cover the entire surface of the Moon. Does anyone know where I can find or buy this type of information? 4/15/95 - 1 response - [last response 4/19/95]

Patrick Malone, Malone Consulting, personal@rahul.net

QUESTION 56: How do I get a list of hand-held photos taken by the astronauts during the SIR-C/X-SAR missions? I'd like to see if my site (Hotien, China) is among them. 4/10/95 - 2 responses - [last response 4/17/95]

Pamela Logan, China Exploration & Research Society, pamlogan@alumni.caltech.edu

QUESTION 55: Does anyone know if the color fringes in the Kilauea Interferometry image #2 [P-44758 Oct 12, 1994] represent a known vertical and/or horizontal displacement ? If so, how much approximate maximum shows in the concentric center, first red fringe, first blue/green, next yellow/red, etc. Is this data verified by GPS or ground survey or both ? If these things are known it would greatly add to a volcanic expansion Lab exercise I am designing for my Earth Science students. P.S. To be able to do geoscience with such current data is an exciting opportunity for students !! 3/30/95 - 2 responses - [last response 4/ 6/95]

William Seebeck , Chantilly HS 4201 Stringfellow RD. Chantilly VA 22021, or POB 163, Lincoln VA 22078

QUESTION 54: This is in reply to Tom(?) who replied to my question no.51 I/we don't have a homepage and your e-mail address appears to be invalid so... Our radar is 94GHz (sees through fog/rain/smoke) and has a 25cm down-range resolution. The cross range resolution is between 1.4m and 4m at 800m range. The data is digitised to 8-bits and yes we fly our own helicopter over what we fancy. Yhis uses most of our buget and the cost per mile is frightening, so I'm not at liberty to hand out free data (sorry). We have automatically registered these images against cartographic maps and x-band SAR. To do the same against infra red images would be harder because of the lack of range information but it is possible. I know people who automatically register infrared images taken at both shallow and steep depression angles, against cart maps. 3/30/95 - 3 responses - [last response 4/21/95]

mark williams, dra uk, MLWILLIAMS%TAZ.dnet@hermes.dra.hmg.gb

QUESTION 52: I work with imaging radar. A forward looking airborn radar scans the ground from +/- 30 degrees at a shallow depression angle. The data is gathered at about 800m. A radar image is made, combining the information from many sweeps. High down-range resolution plus the use of doppler beam sharpening techniques allow the formation of good quality x-band images. We then aim to automatically register these against cartographic maps and also identify interesting features. Is anybody interested in this sort of work? 3/29/95 - 3 responses - [last response 6/16/95]

Mark Williams, DRA - Uk, mlwilliams@taz.dra.hmg.gb

QUESTION 51: We are interested in obtaining information about the archaeologists who are working on the "Lost City of Ubar" project and poc info. We are also interested in knowing if anyone knows if good quality digital elevation maps of that region of Oman exist. John Schiebold and Gary McKay, St. Cloud State Univ. GIS Center. 3/26/95 - 0 responses

Gary McKay, Graduate Student, gary@sherburne.geog.stcloud.msus.edu

QUESTION 50: I am looking for source code or references to perform Lee and Frost filtering of SAR data, and also to perform slant range to ground range conversion of complex SAR data. Any help or leads would be appreciated... 3/24/95 - 3 responses - [last response 3/26/95]

Orrin Long, Intergraph Corporation, olong@ingr.com

QUESTION 48: After finding the data take for a SIR-C image, I tried to browse and view several images. The host connection was taking far longer than I thought it should, so I stop transmission. Should it take longer than several minutes for host contact wh en trying to view or browse SIR-C images? Thanks, Scott Hughes hughscot@isu.edu 3/17/95 - 2 responses - [last response 3/27/95]

Scott Hughes, Idaho State University, hughscot@isu.edu

QUESTION 44: I'm looking for high resolution digital elevation models (DEMs) generated from interferometric synthetic apeture radar (IF SAR) data. Does anyone one know the availability of such data? 3/ 7/95 - 7 responses - [last response 3/26/95]

K. O'Rourke, Pacific Sierra Research Corp, kevin@mgate.psrv.com

QUESTION 42: Anybody working on the Angkor images? I'm just learning how to use this image, so any advice would be appreciated. 3/ 5/95 - 2 responses - [last response 3/15/95]

Alexei Vranich, U of Penn, Avranich@mail.sas.upenn.edu

QUESTION 40: Hi, I would like to know where I can find IMDISP - a general purpos image display program. I am a beginner. I only want to dispaly some processed images on my SVGA screen. Can I down load this program somewhere? Thanks 3/ 2/95 - 3 responses - [last response 6/27/95]

Allan Zhang, Golder Associates Ltd., Zhang@FreeNet.Calgary.ab.ca

QUESTION 39: Is there some sort of list anywhere on this net or in jplinfo that indicates which data takes have already been precision processed? This information may reduce the time it takes to get suitable precision data for some users, and may reduce your queue of data requests. 2/24/95 - 2 responses - [last response 9/11/95]

Drew Hartigan, Naval Postgraduate School, hartigan@physics.nps.navy.mil

QUESTION 35: I have had a few questions from users wondering how to use the .IMG files from the EROS data center. Has anyone used these files with the ERDAS imagine program? 2/16/95 - 2 responses - [last response 3/25/95]

bruce chapman, jpl, bruce.chapman@jpl.nasa.gov

QUESTION 34: I keep hearing rumors of a third flight for the SIR-C radar. Rumor has it will fly with an extended arm of some sort that will have a receive only panel array. Is the third flight on the drawing board or just rumor? And what is the purpose of the receive only array on the extended arm? Final question when will the SIR-C images come out on CD-ROM and how can I get one? Thanks Bruce. 2/16/95 - 3 responses - [last response 3/27/95]

QUESTION 32: Some comments: 1) How about an imaging radar 'who's who' with information on research interests, possibly brief biographical details, and a contact address. This would be a useful resource for researchers. I mean this to include anybody, and not just limit it to the JPL staff. 2) I would like to see the standard sample datasets available via the WWW route. One of each format, from each sensor would be nice. 'Real' data, rather than pictures, of course. Ditto the standard docs, preferably in postscript format. 3) A list of available JPL radar reports/publications along with ordering info (etc) would be useful. This would stop me having to bug the radar librarians so I guess they'd be happy too. Perhaps a section on radar textbooks would be a useful item too. 4) Finally, congratulations on the BBS and the updated home page! Rick 2/15/95 - 3 responses - [last response 8/ 3/95]

(Prof.) Rick Turner, ricky@drift.demon.co.uk

QUESTION 30: I am doing thesis work comparing shuttle visible imagery with radar data from SIR-C, preferably taken at the same time. Currently there is no cross reference option within the JPL Radar page. Is there one buried somewhere that I don't know about? I am specifically looking for coastal scenes. 2/15/95 - 1 response - [last response 3/23/95]

Drew Hartigan, Naval Postgraduate School, hartigan@physics.nps.navy.mil

QUESTION 29: Has anyone seen any good remote sensing home pages or home pages with radar remote sensing data? I would like to put links to them...please respond to the bulletin board... 2/14/95 - 2 responses - [last response 3/19/95]

bruce chapman, jpl, bruce.chapman@jpl.nasa.gov

QUESTION 28: We are interested in looking at the radar images on our Mac, however we seem to be having some problems. The documentation says we can view images on a Mac with either Photoshop or NIHimage. Neither of these work on the *.IMG file we have downloaded. Is there some translation process that we have missed? And, if so how do we view these images? And where can we get the appropriate software from? 2/ 9/95 - 2 responses

Garry Peterson, University of Florida, garry@zoo.ufl.edu

QUESTION 24: The novel aspect of the SIR-C and AIRSAR data sets is the polarization. If it were just another 3 wavelengths added to IR and visible data layers, we would all know what to do. My question: is there inter-band statistical correlation of polarization and how do I remove it? That is, how is principal component analysis done in this context: do I remove inter-band intensity correlation separately or somehow simultaneously with polarization correlation? Your reference section is under development and still fairly sketchy -- has this been done already? 2/ 5/95 - 3 responses - [last response 3/26/95]

Tom Pringle, Emerald Imagery, tingalsb@oregon.uregon.edu

QUESTION 15: In posting comments or responses to the bulletin board, may we include links in our documents? Or would JPL rather edit these in or forgo this entirely? As an experiment, I am going to include a link to the radar image data warehouse at Eros, the Eros Data Center (EDC), in this message. If this works, my method was to simply imitate the html formating used for links when the bulletin board is 'viewed as source' in the Netscape browser, pasting in Eros' URL from my hotlist. 1/28/95 - 8 responses - [last response 3/26/95]

Tom Pringle, Emerald Imagery, tingalsb@oregon.uoregon.edu

QUESTION 07: The current (2/95) issue of Scientific American contains a short piece (Pp. 18) on JPL's collaboration with French Scientists in the development of radar "interferograms" for use in mapping deformations in the earth arising from earthquakes. I'd like to know the technical details of the technique. Have there been any publications, or are there materials available on the WWW that will help? Please reply to me at allanb@jupiter.uoregon.edu. Thank you. Allan Branscomb - 2 responses

Allan B. Branscomb, University of Oregon, allanb@jupiter.uoregon.edu

QUESTION 04: Under the science and applications section, users of radar data may submit results that they have obtained for access by the users of the imaging radar home page. Under user contributions, I will put your html and/or gif/jpeg images for browsing. Those interested should contact me by email. - 4 responses

bruce chapman, JPL, bruce.chapman@jpl.nasa.gov

QUESTION 03: Have you found any bugs in the JPL software? - 7 responses

Tony Freeman, Jet Propulsion Laboratory, tony.freeman@jpl.nasa.gov

QUESTION 01: What are your comments or suggestions about the bulletin board? - 18 responses - [last response 9/18/95]

Sharon Okonek, Jet Propulsion Laboratory, sharon.okonek@jpl.nasa.gov

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