Big scene satellite constellation analog method based on microwave anechoic chamber

Abstract

The invention relates to a big scene satellite constellation analog method based on a microwave anechoic chamber, which is characterized by including following steps that a rotary table moves in an antenna direction along a straight line to expand the field of view angle, distances between N navigation satellites and a satellite receiver are calculated, the shortest N radiating antennas are selected from a plurality of antennas, and then positions of N radiating antennas are determined; and N navigation signals which are output by a navigation signal simulator are sent by the selected N antennas to a direction of a detected receiving terminal carrier rotary table, thereby an airspace simulation of a satellite space position in the microwave anechoic chamber can be achieved. According to the method, a large angular domain simulation environment is constructed by utilizing N output satellite navigation simulators and radio frequency output of N antennas, besides, by means of a calculation of positions of a navigation satellite constellation, a physical mapping of an actual distribution of satellite space positions is performed in the microwave anechoic chamber, thereby a detecting performance of a satellite navigation receiver can be truly reflected.

Description

technical field [0001] The invention relates to a satellite constellation simulation method, in particular to a large-scene satellite constellation simulation method based on a microwave anechoic chamber. By constructing a large-angle domain simulation environment in the microwave anechoic chamber, the airspace characteristics of satellite navigation signals are simulated, thereby improving the Authenticity of satellite navigation receiver tests. Background technique [0002] The indoor simulation of satellite navigation signals should have become an important part of satellite navigation receiver testing. At present, the simulation methods used for satellite navigation signals are relatively simple. Generally, multi-satellite synthetic radio frequency signals in specific scenarios are generated through radio frequency navigation signal simulation. And use a single antenna to radiate into the microwave anechoic room, so as to realize the indoor simulation of satellite signal...

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Problems solved by technology

[0002] The indoor simulation of satellite navigation signals should have become an important part of satellite navigation receiver testing. At present, the simulation methods used for satellite navigation signals are relatively simple. Generally, multi-satellite synthetic radio frequency signals in specific scenarios are generated through radio frequency navigation signal simulation. And use a single antenna to radiate into the microwave anechoic room, so as to realize the indoor simulation of satellite signals; however, because the single antenna can only radiate to one direction, it is impossible to simulate the satellite space position (satellite constellation), so it cannot meet the requirements of the satellite navigation receiver. test requirements

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