|
|
|
|
GFZ-1
Jump to: Mission Objectives, Mission Instrumentation, Mission Parameters, Additional Information
Mission Photos:
Courtesy of GFZ
Mission Objectives:
GeoForschungsZentrum (GFZ)-1 is
the first satellite mission designed and funded by the
GeoForschungsZentrum Potsdam, Germany. The mission objectives
of GFZ-1 are to determine variations in the rotational
characteristics of the earth and to measurement changes
in the earth's gravity field. For the high resolution
determination of the parameters of the gravity field
the satellite must be launched into the lowest possible
orbit. At its altitude of 400 kilometers, GFZ-1 will
be the lowest geodynamic satellite to be ranged to by
lasers and it is anticipated that it will lead to a significant
improvement in the modeling of the gravity field. As
the vehicle's orbit decays, the satellite's orbital motion
will also be used calculate atmospheric densities.
The satellite was built and launched by Russia. GFZ-1
was transported to the MIR Station aboard a Russian PROGRESS
spacecraft and from there put into a low earth orbit
in April 1995.
Mission Instrumentation:
GFZ-1 is a passive geodetic
satellite which only has one instrument, the retroreflector
array.
Mission Parameters:
GFZ-1 Parameters |
Sponsor: |
GFZ
(Germany) |
Expected Life: |
5
years |
Primary Applications: |
time
varying gravity field |
COSPAR ID: |
8601795 |
SIC Code: |
8001 |
NORAD SSC Code: |
23558 |
Launch Date: |
April
19, 1995 |
RRA Diameter: |
21 cm |
RRA Shape: |
sphere |
Reflectors: |
60
corner cubes |
Orbit: |
circular |
Inclination: |
51.6
degrees |
Eccentricity: |
0.000 |
Perigee: |
398 km
(initial) |
Period: |
92
minutes |
Weight: |
20 kg |
Additional Information:
- Web sites:
- Publications:
- Chen, Z. and Koenig, R., "The GFZ/D-PAF orbit Prediction System with Emphasis on the Low Flyer GFZ-1", Proc. of the 10th International Workshop on Laser Ranging Instrumentation, Shanghai Observatory, Chinese Academy of Sciences, Shanghai, China, November 11-15, p. 489, 1996.
- Koenig, R., Bode, A., Chen, Z., Grunwaldt, L., Neubert, R., Reigber, Ch., and Schwintzer, P., "The GFZ-1 Mission: Design", Operations and First Results. Scientific Technical Report STR96/09, GFZ Potsdam, 1996.
- Koenig, R., Bode, A., Chen, Z., and Reigber, Ch., "Surface Forces Parametrization of GFZ-1 Orbits and Gravity Field Recovery", Advances in Space Research, Vol. 19, No. 11, 1677-1680, 1997.
- Koenig, R., Chen, Z., Reigber, and C., Schwintzer, P., "Improvement in global gravity field recovery using GFZ-1 satellite laser tracking data", Journal of Geodesy, 73, 8, p. 398-406, 1999.
- Koenig, R., Schwintzer, P., Bode, A., and Reigber, Ch.,"GFZ-1, A Small Laser Satellite Mission for Gravity Field Model Improvement", Geophysical Research Letters 23, No. 22, 3143-3146, 1996.
- Koenig, R., and Massmann, F.H.,"The GFZ-1 Mission", Satellite Laser Ranging Newsletter, SLR/LLR Subcommission of the CSTG (International Coordination of Space Techniques for Geodesy and Geodynamics), Mai 1996, p. 16, Goddard Space Flight Center, NASA, 1996.
- Koenig, R., and Reigber, Ch., "GFZ-1 Mission Operations and Performance", In: IAA Symposium on Small Satellites for Earth Observation, November 1996, Berlin, Symposium Digest, pp. 208-211, 1996.
- Konig, R., and Chen, A., "Probable Qualities of GFZ-1 Orbit Predictions", Proc. of the 9th International Workshop on Laser Ranging Instrumentation, Australian Government Publishing Service, Canberra, p . 371, 1994.
- Reigber, Ch., and Konig, R., "Gravity and Atmosphere Model Aspects by the Low Altitude Target GFZ-1", Proc. of the 9th International Workshop on Laser Ranging Instrumentation, Australian Government Publishing Service, Canberra, p . 22, 1994.
|
|