A positioning on-orbit test verification method based on navigation satellite leakage signals

Abstract

The method of the present invention proposes an on-orbit test verification method for positioning based on navigation satellite leakage signals. First, determine the flight height of the on-orbit test, calculate the relative positional relationship between the detector, the navigation satellite and the earth, and calculate the relative position of any position according to the positional relationship among the three. The angle between the earth vector of the navigation satellite and the detector vector is used to judge the visibility of the navigation satellite; according to the judgment result of the navigation satellite visibility, determine the altitude range and the startup time of the spaceborne navigation receiver, and according to the judgment result of the navigation visibility , analyze the flight attitude on orbit, and determine the beam angle range of the receiving antenna of the GNSS navigation receiving equipment; on-orbit test records the reception of navigation leakage signals and navigation positioning results; compare and analyze the receiving ability of GNSS receiver navigation leakage signals and its performance on navigation The method of the present invention solves the comprehensive functional performance test of the navigation satellite leakage signal receiving equipment of deep space exploration and high-orbit earth satellites and the system design problem of using the navigation satellite leakage signal for positioning.

Description

technical field [0001] The invention belongs to the technical field of deep space exploration, and in particular relates to a navigation and positioning on-orbit test verification method based on navigation satellite leakage signals. Background technique [0002] The space navigation satellite leakage signal is the navigation satellite signal on the opposite side of the earth and the sidelobe signal of the navigation satellite, also known as the weak navigation signal, and the signal strength is usually in the range of -180dBW to -188dBW. As the distance between the detector and the earth increases, the navigation signal received by the receiving device attenuates exponentially, and the performance requirements for the receiving device are more stringent. [0003] At present, the commonly used GNSS navigation and positioning test methods mainly verify the performance of equipment through ground simulation tests, or use geostationary orbit satellites or other high-orbit satel...

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to propose a method for on-orbit test and verification of navigation satellite leakage signal receiving equipment, so as to overcome the defects of the prior art and solve the all-round problems of navigation satellite leakage signal receiving equipment for deep space exploration and high-orbit earth satellites Functional Performance Testing and System Design Issues for Positioning Using Missing Signals from Navigation Satellites

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