Level 2 Help for GPWSFORMAT

INP

 An EDR record on disk. Each EDR file begins with a PDS label followed by
 an EDR file header and  EDR line records for at most 1 RIM of data.
 A new file is created upon telemetry format or instrument mode changes.
 Missing data within a record is zero filled.  There is no filler for
 missing records.  The number of PWS data blocks in each of up to 91 records is
 dependent on the telemetry format and instrument mode.  The length of the
 records are fixed for a given file but may be different between files depending
 on the telemetry format and instrument mode.  The details are described in the
 document "PWS EDR Software Interface Specification".(232-09)


OUT

 A standard VICAR format. The following information describes the first output :

 It does not have a binary label.  All the information will be carried in the
 history label.  Each output file can hold up to 91  minor frames of PWS data 
 or 13 minor frames in the case of telemetry modes PW4, PW8, instrument modes
 1 and 2.  The output file consists of records of constant length.  The record 
 length of output file varies depending on the telemetry mode and instrument 
 mode. The details are described in the following table :
 
+----------------+---------------+--------------------+------------------------ |   Telem mode   |   Inst mode   |   Output rec len   |  Max number of lines   |
+----------------+---------------+--------------------+------------------------ |   HPW/HRW            1,2             1024           |          910           |
|   HPW/HRW             3               512           |          364           |
|    PW4                1               512           |          416           |
|    PW4                2               512           |         1040           |
|    PW4                3               512           |          364           |
|    PW8                1               512           |          416           |
|    PW8                2              1024           |         1040           |
|    PW8                3               512           |          364           |
|   HCJ/HPJ            1,2              128           |          910           |
|   HCJ/HPJ             3               512           |          364           |
|   XPW/XRW            1,2              512           |          910           |
|   XPW/XRW             3               512           |          364           |
|    MPP               1,2              256           |          910           |
|    MPP                3               512           |          364           |
|    MPW              1,2,3             128           |          910           |
+-----------------------------------------------------+------------------------ 
 The second output contains 1 line, 91 Integer*4 samples.  It contains the 
 Antenna switch position for each MOD91: 0 represents Antenna switch E,
 1 represents Antenna switch B, 2 represents Unknown.

  


SPEC_NO

 This variable identifies the spectrogram number being processed.  
 For telemetry modes PW4, PW8, instrument modes 1 and 2, each output file 
 contains 13 minor frames.  It takes 7 spectrograms to represent 1 rim of data.


ALLZEROS

 For telemetry modes PW4, PW8, instrument modes 1 and 2, each output file 
 contains 13 minor frames.  It takes 7 spectrograms to represent 1 rim of data.
 If all data for a given spectrogram are missing, the spectrogram will not be 
 processed.  The program will output a variable in TAE to identify this case.


TEST

 This keyword is used for diagnostic purposes.