NSSDCA ID: PSFP-00491
Availability: Archived at NSSDC, accessible from elsewhere
Time span: 1978-12-05 to 1992-10-07
This description was generated automatically using input from the Planetary Data System.
The DSP-R is a computer-controlled subsystem that digitally samples a received spacecraft signal (both X and S-band) through the use of four analog-to-digital (A-D) converters. The digitized samples, along with the monitor data necessary to reconstruct the signal, are recorded on tape, and/or transmitted in realtime to SFOC. Analysis of variations in the amplitude, phase, and frequency of the signal provides information on the ring structure, atmospheric density, magnetic field, and charged-particle environment of planets which occult the spacecraft. Additionally, this signal is needed for gravity wave detection. The DSP-R digitally samples the received spacecraft signal with 8-bit or 12-bit resolution and creates records of varying lengths, depending on the sample rate and resolution. Each record is composed of (1) a header containing information on system configuration, time-tagged receiver local oscillator values, etc., and (2) a block of digital data from the four A-D converters. Time Tag Offset The sampled data are later than the reported time tag by two intervals of the sample rate of a single A-D converter. This means that in each record the ADC data which corresponds with the time tag is the third set of ADC samples in the record, not the first set.
These data are available on-line from the Planetary Data System (PDS) at:
https://pds-ppi.igpp.ucla.edu/data/PVO-V-ORSE-1-ODR-OPENLOOP--V1.0/
Questions and comments about this data collection can be directed to: Dr. David R. Williams
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Thomas A. Croft | Data Provider | SRI International | tomcroft@kl.sri.com |