Global positioning system (GPS)/global navigation satellite system (GLONASS) dual-system combination simulator and method

Abstract

The invention discloses a global positioning system (GPS)/global navigation satellite system (GLONASS) dual-system combination simulator and a GPS/GLONASS dual-system combination simulation method. Based on a hardware platform consisting of a digital signal processor (DSP) information processing module, a field programmable gate array (FPGA) signal processing module, two D/A conversion modules, an up-conversion module and a transmission antenna or output cable, a GPS satellite channel and a GLONASS satellite channel which are independent of each other are separated to realize GPS/GLONASS dual-system combination simulation. In the simulator and the simulation method, not only an independent GPS satellite signal and an independent GLONASS satellite signal can be simulated in an independent processing way, but also the coordinate system uniformization and time system synchronization of two systems can be realized, thereby effectively shortening a research and development cycle, reducing the receiver research and development cost and bringing convenience to the construction of a testing environment.

Description

Technical field [0001] The invention relates to the field of satellite navigation, in particular to a GPS and GLONASS dual system combined simulator and method. Background technique [0002] GNSS (Global Navigation Satellite System), or "Global Navigation Satellite System", is the collective name for satellite navigation systems, including GPS in the United States, GLONASS in Russia, Compass in China, and Galileo in the European Union. The number of available satellites will be Reach more than 100 pieces. As far as the current situation is concerned, there are mainly two global satellite navigation and positioning systems that have been built and put into operation, one is the US GPS global satellite positioning system, and the other is the Russian GLONASS system. They can provide services such as precise positioning for unlimited users around the world around the clock. GPS and GLONASS are two completely independent systems. When in normal operation, the positioning performanc...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a GPS and GLONASS dual-system combined simulator and method, which mainly overcomes the gap between GPS and GLONASS two systems by solving the coordinate system, time system, and timing synchronization problems between GPS and GLONASS systems. The difference between them, so that the GPS and GLONASS satellite signals received by a carrier at the same time and space can be simulated at the same time

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