关键词: GPS接收机, 星载, 微弱信号, 捕获跟踪

Abstract:

With high dynamic signal tracking and locking function to solve the spaceborne GNSS receiver, the design of a self-developed satellite navigation receiver GPS, through a software upgrade to allow it to work in LEO, GEO and higher orbit, achieve faster signal capture capability and weak signal tracking ability.This paper introduced the design and test of spaceborne GPS receiver. The receiver hardware and software architecture and the functional description is provided, and finally gives the simulation test results under the condition of high dynamic low earth orbit. Through the test showed that the promising performance of weak GNSS signal acquisition & tracking under high dynamic conditions which is suitable for space use.

Key words: GPS receiver, space borne, weak signal, acquisition &, tracking