PDS_VERSION_ID = PDS3
RECORD_TYPE = FIXED_LENGTH
RECORD_BYTES = 80
OBJECT = TEXT
PUBLICATION_DATE = 1999-08-12
NOTE = "Description of contents of CALIB directory "
END_OBJECT = TEXT
END
The CALIB directory contains binary and ASCII POCA files. A POCA
file gives the frequency and rate of change of frequency of the DSN
receiver Programmable Oscillator Control Assembly. The POCA is the
DSN module which actively tunes the receiver to follow a drifting
spacecraft signal (the software equivalent of the receiver's local
oscillator).
Each file is accompanied by a detached PDS label. Each label is an
ASCII file with 80 character records. Records are delimited by the ASCII
carriage-return (ASCII 13) line-feed (ASCII 10) pair at the end of each
line (positions 79 and 80).
The files are:
CALINFO.TXT
This file, which gives a brief summary of the directory contents.
VG1TPOC1.DAT
The binary file, provided by the Jet Propulsion Laboratory, was part
of the Voyager Radio Science data delivery. The data file is accompanied
by a minimal PDS label with name VG1TPOC1.LBL. The format and contents
of the file are described in file RSC_11_5.TXT in the DOCUMENT directory.
VG1TPOC2.TAB
This is an ASCII conversion of the binary file VG1TPOC1.DAT. It is
stored as a PDS TABLE object. The file gives frequency and frequency rate
of the receiver local oscillator at one second increments during the
Voyager 1 Titan radio occultation. The detailed format and contents of
the file are described in the accompanying PDS label file VG1TPOC2.LBL.
|