The design and field testing of a telemetry link to send signals to the surface of the earth from an earth penetrator are described. The link uses a PCM/FM format at a frequency of 10.5 kHz, dissipates 8 watts, and fits within a cylinder with an inside diameter of 100 mm. A bit error rate of less than 0.00001 was achieved from a depth of 52 meters at a bit rate of 1,000 bits per second.
NASA STI/Recon Technical Report N
- Pub Date:
- Data Links;
- Space Communication;
- Data Transmission;
- Design Analysis;
- Space Communications, Spacecraft Communications, Command and Tracking