Accession Number : ADA328736

Title :   Consultative Committee for Space Data Systems. Report Concerning Space Data System Standards. Telemetry Summary of Concept and Rationale.

Descriptive Note : Green Book, Issue 1.

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON DC

PDF Url : ADA328736

Report Date : DEC 1987

Pagination or Media Count : 56

Abstract : The purpose of a telemetry system is to reliably and transparently convey measurement information from a remotely located data generating source to users located in space or on Earth. Typically, data generators are scientific sensors, science housekeeping sensors, engineering sensors and other subsystems on board a spacecraft. The advent of capable microprocessor based hardware will result in data systems with demands for greater throughput and a requirement for corresponding increases in spacecraft autonomy and mission complexity. These facts, along with the current technical and fiscal environments, create a need for greater telemetering capability and efficiency with reduced costs. Traditionally, most of the telemetry resources used by a science mission have been wholly contained within a cognizant Project office and, with the exception of the tracking network, are completely dedicated to that mission. The lack of effective standardization among various missions forces the 'multi-mission' tracking network to implement the lowest level of telemetry transport service, i.e., bit transport. Higher level data delivery services, oriented more toward computer-to-computer transfers and typical of modern day commercial and military networks, must be custom designed and implemented on a mission-to-mission basis.

Descriptors :   *SYSTEMS ENGINEERING, *INFORMATION SYSTEMS, *SPACE SYSTEMS, *TELEMETER SYSTEMS, DATA PROCESSING, SOURCES, MEASUREMENT, SPACECRAFT, COMMERCE, ENVIRONMENTS, DETECTORS, NETWORKS, TRACKING, REDUCTION, COSTS, ENGINEERING, MISSIONS, SPACE SCIENCES, TRANSPORT, MILITARY APPLICATIONS, STANDARDS, RESOURCES, AUTONOMOUS NAVIGATION, MULTIMISSION.

Subject Categories : Computer Systems
      Telemetry

Distribution Statement : APPROVED FOR PUBLIC RELEASE