SAND DEVIL: A digital video link for telemetry applications
Abstract
A digital video encoder/decoder was built which is suitable for airborne telemetry. The system allows the use of multiple black and white or a single RGB camera. The spatial resolution, frame rate, and pixel compression algorithm can be tailored to specific mission requirements. The output bit rate of the encoder can be varied from 0.89 to 7.16 Mbit/sec, depending on test range capability and RF data link considerations. The digital output of the encoder can be encrypted for data security. The system architecture is flexible, yet very simple, leading to a compact design. Also, the entire system is implemented with off-the-shelf components, thus reducing development time and cost. The size of the encoder and decoder can be reduced substantially by using surface mount devices.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- October 1989
- Bibcode:
- 1989STIN...9014259M
- Keywords:
-
- Coding;
- Digital Systems;
- Images;
- Telemetry;
- Video Signals;
- Algorithms;
- Cryptography;
- Spatial Resolution;
- Television Cameras;
- Vidicons;
- Space Communications, Spacecraft Communications, Command and Tracking