Digital transmission experiments with the Orbital Test Satellite
Abstract
Digital satellite communication experiments in the 11/14 GHz band were performed on a 115 km link by OTS (ESA). Equipment was developed and tested via a translator loop. For transmission and reception of RF signals, paraboloid antennas of 3 and 8 m diameter were used. Digital transmission tests were carried out via the OTS-A and OTS-B transponders. Spectra of the transmitted and received signals were measured for different QPSK modulation and demodulation strategies at bit rates of 4 and 8.448 Mbit/sec. Videophone and single channel per carrier digital telephony demonstrations in satellite loop operation were given. Bit error rate was measured for QPSK modulation at bitrates of 4 and 8.448 and 32 kbit/sec.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1984
- Bibcode:
- 1984STIN...8610270D
- Keywords:
-
- Digital Spacecraft Television;
- Ots (Esa);
- Satellite Transmission;
- Telephony;
- Phase Shift Keying;
- Satellite Communication;
- Single Channel Per Carrier Transmission;
- Video Communication;
- Space Communications, Spacecraft Communications, Command and Tracking