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Galileo >> PWS

Galileo Orbiter at Earth: GO-E-PWS-2-EDR-E1WFRM-V1.0
GO-E-PWS-2-EDR-E1WFRM-V1.0	PDS 3 CERTIFIED

Start Time: 0002-12-31 08:00:00 - Stop Time: 1990-12-15 05:58:02

This file contains Galileo PWS 80KHZ waveform data acquired between 1990-343T22:24:12.667 and 1990-343T22:25:13.268 during the EARTH 1 ENCOUNTER mission phase.

Citiation Information

Title	Galileo Orbiter at Earth: GO-E-PWS-2-EDR-E1WFRM-V1.0
Publisher	NASA Planetary Data System
doi	https://doi.org/10.17189/1519654

61174800

Show Details

Creation Date	1994-07-01
Start Time	1990-343T22:24:12.667
Stop Time	1990-343T22:25:13.268
Spacecraft Clock Start	0/00611748:00:0:0
Spacecraft Clock Stop	0/00611748:90:9:0
Data Set Id	GO-E-PWS-2-EDR-E1WFRM-V1.0
File Records	93
Target	EARTH SOLAR_SYSTEM
Instrument Host	GALILEO ORBITER
Instrument	PLASMA WAVE RECEIVER
Instrument ID	PWS
Description	This file contains Galileo PWS 80KHZ waveform data acquired between 1990-343T22:24:12.667 and 1990-343T22:25:13.268 during the EARTH 1 ENCOUNTER mission phase.
Note	All waveform data files are binary and have a fixed record length structure. The first record is an ASCII header (padded to record length) that contains many of the same parameters contained in this label file. The next record is a binary header that also contains much of the same information as this label. This label is derived from the data file by reading these headers. The binary header record is described in machine readable form by the PDS label file EDRHDR.FMT and in a more human readable for in EDRHDR.TXT. The remaining records contain data. Each data record has a 30 byte header (prefix) followed by n (n=1 or 10) blocks of waveform samples. In most cases, only a few of these data blocks contain data (the rest may be zero filled). The file record length, the number of waveform samples per data block, and the sampling frequency are dependent on the spacecraft telemetry mode and the instrument mode. The following table describes the variations in waveform data files: APID Inst Mode* Tel-fmt Rec-Length Blocks/Rec Samples/Block ID (bytes) --------------------------------------------------------------------- PWH1 1,2,3 LPW 465 1 870 PWH2 1,2,3 MPW 670 10 128 PWH3 1,2 MPP 1630 10 320 PWH3 3 MPP 1080 10 210 PWH4 1,2 HPW 7910 10 1576 PWH4 3 HPW 1080 10 210 PWH5 1,2,3 LPW 4350 10 864 * 1=10 kHz, 2=80 kHz, 3=1kHz Each data record contains data acquired in a single minor frame (mod91=0.667 seconds). The time tag for the data record is located in the row prefix header (ROWPRFX.FMT). The start time of a block of waveform samples is the RTI in which the data block occurs (10 RTI per minor frame, 0-9). Therefore if the waveform samples are located in data block 3 and the row prefix header gives the time tag 03209117:27:0:0, then the samples begin at 03209117:27:2:0. The time between samples is determined by the sampling frequency. There are 3150, 25200, 201600 samples per second in the 1 kHz, 10, kHz, and 80 kHz modes respectivley. Please note that in the PWH5 mode, there are more samples than can be taken in a single RTI at the 1 kHz sample rate. The waveform data are sampled uniformly and continuously in a single data block, across the RTI boundaries. These data are non-overlapping so that data cannot occur in all of the data blocks for this mode/format combination. Label START and STOP TIMES above refer respectively to the beginning of the first and the last data record in this EDR file. Each data record spans a sample time of 2/3 second (= 1 MOD91 count).

Top/ DATA/ C006117/ 61174800

Files

	61174800.DAT	(718.39 KB)
	61174800.LBL	(12.89 KB)
	EDRHDR_7910.FMT	(33.98 KB)

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