Beidou foundation navigation network ground monitoring station pseudolite and control method

Abstract

The invention discloses a Beidou foundation navigation network ground monitoring station pseudolite and a control method. The Beidou foundation navigation network ground monitoring station pseudolite is used for achieving physical simulation of output signals of a single satellite and comprises an interface module, a control module, a base band module, a radio frequency module and an antenna. The input end of the interface module is connected with a data signal and a clock signal. The output end of the interface module is connected with the control module. One output end of the control module is directly connected with the antenna through the radio frequency module, and the other output end of the control module is connected with the radio frequency module through the base band module. The radio frequency module is connected with the antenna. The Beidou foundation navigation network ground monitoring station pseudolite can simulate pseudolite signals of a Beidou system and achieve physical simulation of the output signals of the single satellite. Pseudolite navigation signal pseudo-random codes are selected from the unused Beidou satellite signal pseudo code space and are not relevant to existing satellite signals. High-precision inter-satellite link time synchronization is achieved through a network time protocol.

Description

technical field [0001] The invention relates to a pseudo-satellite of a Beidou ground-based navigation network ground monitoring station and a control method. Background technique [0002] China's BeiDou Navigation Satellite System (BDS) is a global satellite navigation system developed by China itself. It is the third mature satellite navigation system after the US Global Positioning System (GPS) and Russia's GLONASS satellite navigation system. Beidou Satellite Navigation System (BDS), GPS of the United States, GLONASS of Russia, and GALILEO of the European Union are certified suppliers by the United Nations Satellite Navigation Commission. The Beidou satellite navigation system consists of three parts: the space segment, the ground segment and the user segment. It can provide high-precision, high-reliability positioning, navigation, and timing services for all types of users around the world, all-weather, and has short-message communication. It has initially possessed r...

AI Technical Summary

Problems solved by technology

The timing accuracy of the traditional pseudolite system is poor, and it cannot meet the requirements of the absolute time deviation of the pseudolite (required to be better than 100ns)

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