SAMPLED DATA TELEMETRY FOR SATELLITE APPLICATION,
Abstract
Based upon a study of satellite telemetry requirements begun in 1957, a variety of sampled data telemetry systems have been developed and successfully flown. These systems have ranged from a low-power, narrow-bandwidth system operating at 1 sample per second to several high-capacity systems operating at sampling rates as high as 40,000 samples per second. The salient features of these systems are: Maximum data handling capability in minimum bandwith. This characteristic makes it possible to maximize the range for a given transmitter power or to minimize the transmitter power for a given range. Accuracy consistant with the instrumentation requirement. In instances where high accuracies are not required, the system provides a means to exchange the accuracy capability for bandwidth or power reduction without affecting the critical measurements. Flexibility and versatility. The system is able to transmit various intelligence signals and bandwidths without extensive modification of the basic system conponents. Reliability. The system is designed to provide utmost simplicity in the vehicle-borne equipment. Wherever possible all of the complexity is assigned to the ground installations. Vehicle-borne equipment contains a minimum of components and is designed in such a manner that a failure of any individual data channel or group of data channels will not effect the performance of other data channels. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0487640
Entities
People
- C. M. Kortman
Organizations
- Lockheed Martin Missiles and Space