Method for carrying out positioning in-orbit test authentication based on navigation satellite leakage signal

Abstract

The present invention provides a method for carrying out positioning in-orbit test authentication based on a navigation satellite leakage signal. Firstly, an in-orbit test flight height is determined, the relative position relation among a detector, a navigation satellite and the Earth is calculated, the angle of an any position relative to Earth vector and detector vector of the navigation satellite is calculated according to the position relation of the detector, the navigation satellite and the Earth, and the visibility of the navigation satellite is judged. According to the navigation satellite visibility judgment result, the height range of boot working and boot time of a satellite-borne navigation receiver are determined, according to the navigation visibility judgment result, an in-orbit flight attitude is analyzed, and the wave beam angle range of a GNSS navigation receiving equipment receiving antenna is determined. The receiving condition of the navigation leakage signal and a navigation positioning result are recorded in an orbit test. The receiving ability of the navigation leakage signal of the GNSS navigation receiver and the influence on the navigation performance are compared and analyzed. The problems of the comprehensive functional performance testing of the navigation satellite leakage signal receiving equipment of deep-space exploration and high-Earth orbit satellite navigation satellites and the system design of positioning by using the navigation satellite leakage signal are solved.

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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