The performance of VLA as a telemetry receiver for Voyager planetary encounters

Details The performance of VLA as a telemetry receiver for Voyager planetary encounters The performance of VLA as a telemetry receiver for Voyager planetary encounters

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982tdar.nasa...27d&link_type=abstract

In its The Telecommun. and Data Acquisition Progr. J. p 27-39 (SEE N83-14323 05-32)

Computer Science

Antenna Arrays, Data Transmission, Deep Space Network, Gaps, Redundancy Encoding, Telemetry, Voyager 2 Spacecraft, Computer Programs, Concatenated Codes, Program Verification (Computers), Very Large Array (Vla)

Scientific paper

The Very Large Array (VLA) was proposed for use as a supplement to the Deep Space Network (DSN) for telemetry reception at Voyager 2 Uranus and Neptune encounters. The main problem with the use of VLA for telemetry is that it is not capable of producing a continuous stream of data. Gaps of one millisecond follow every 51 milliseconds of data. The effect of these millisecond gaps on coded telemetry is investigated. An upgapped system of the same aperture as the VLA would be capable of handling data rates of 38.4 kbps at Uranus encounter and 19.2 kbps at Neptune encounter. It is shown that VLA with (7, 1/2) convolutional coding (the baseline coding scheme for Voyager) will support a data rate of 10.8 kbps but not 19.2 kbps at both Uranus and Neptune. It is also shown that by implementing Voyager's concatenated Reed-Solomon/convolutional coding capability, data rates of 38.4 kbps and 19.2 kbps would be achievable at Uranus and Neptune respectively. Concatenation also offers a factor of 2 improvement in overall throughput.

Affiliated with

Also associated with

No associations

Rating

The performance of VLA as a telemetry receiver for Voyager planetary encounters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The performance of VLA as a telemetry receiver for Voyager planetary encounters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The performance of VLA as a telemetry receiver for Voyager planetary encounters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1759389