Design study of a HEAO-C spread spectrum transponder telemetry system for use with the TDRSS subnet
Abstract
The results of a design study of a spread spectrum transponder for use on the HEAO-C satellite were given. The transponder performs the functions of code turn-around for ground range and range-rate determination, ground command receiver, and telemetry data transmitter. The spacecraft transponder and associated communication system components will allow the HEAO-C satellite to utilize the Tracking and Data Relay Satellite System (TDRSS) subnet of the post 1978 STDN. The following areas were discussed in the report: TDRSS Subnet Description, TDRSS-HEAO-C System Configuration, Gold Code Generator, Convolutional Encoder Design and Decoder Algorithm, High Speed Sequence Generators, Statistical Evaluation of Candidate Code Sequences using Amplitude and Phase Moments, Code and Carrier Phase Lock Loops, Total Spread Spectrum Transponder System, and Reference Literature Search.
- Publication:
-
Alabama Univ., Huntsville Report
- Pub Date:
- September 1975
- Bibcode:
- 1975alab.reptS....W
- Keywords:
-
- Spectral Signatures;
- Spreading;
- Systems Engineering;
- Tdr Satellites;
- Telemetry;
- Transponders;
- Algorithms;
- Ground Based Control;
- Rangefinding;
- Sequential Control;
- Spacecraft Communication;
- Space Communications, Spacecraft Communications, Command and Tracking