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原文传递 REFSAT/GPS breadboard: Test terminal hardware design report

题名：	REFSAT/GPS breadboard: Test terminal hardware design report
作者：	NONE
关键词：	terminal；design；report；efsa；read；ware；test；geostation；operation；broadcast
摘要：	All users of the NAVSTAR Global Positioning System (GPS) located within a rather large geographical area are currently required to perform a number of identical, common operations in order to accomplish a navigation "fix" (additional "location dependent" operations are also required). Under the REFSAT concept, the common operations are performed at a central location and results broadcast via a geostationary reference satellite (REFSAT). This concept allows a considerable reduction in the cost and complexity of individual civil user terminals. The hardware design of a REFSAT/GPS receiver terminal and the REFSAT transmitter simulator is described. Since six of the Phase 1 NAVSTAR GPS satellites are now operational a demonstration test plan utilizing the one-to-two hour per day viewing window is also described. Equipment check-out preliminary test results are presented.
报告类型：	科技报告