Satellite determination method and device based on Doppler effect

Abstract

The invention discloses a satellite determination method and device based on a Doppler effect. The method comprises the steps of selecting a plurality of satellites which are most similar to orbital parameters of an orbital plane and have satellite topping time difference within set time as alternative satellites; sorting the alternative satellites according to the satellite topping time, and taking the satellite of which the topping time is ranked in the middle as a reference satellite; adjusting the tracking angle of a ground station antenna to always align the antenna with the reference satellite; calculating the Doppler frequency shift corresponding to the reference satellite, and carrying out compensation correction on the received satellite downlink signal by taking the Doppler frequency shift as a compensation amount; and determining a signal source satellite corresponding to the signal according to the frequency deviation condition of the compensated and corrected satellite downlink signal. According to the satellite determination method and device based on the Doppler effect, the signal source satellite corresponding to the signal can be determined when the received satellite signal cannot be analyzed on the ground or the satellite signal does not contain the real-time position information of the satellite, the implementation process is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a method and device for determining a satellite based on the Doppler effect. Background technique [0002] In a multi-satellite launch mission, multiple satellites are released sequentially after the rocket reaches a predetermined orbit. In the initial stage of satellite separation, each satellite is relatively close to each other and basically operates in the same orbit, and it is difficult for the ground to distinguish each satellite. Under normal circumstances, shortly after the satellite enters orbit, the orbital parameters of each satellite can be determined and announced by the ground measurement and control system. That is, satellites of unknown ownership cannot be claimed. In the process of measurement and control, the ground station can receive the signal from the satellite when the working frequency of the downlink signal of the satellite is known. In ...

AI Technical Summary

Problems solved by technology

However, when the ground cannot analyze the received satellite signal or the satellite signal does not contain the real-time position information of the satellite due to some reasons, it is difficult to determine the signal source satellite

In order to solve the problem that it is difficult to determine the signal source satellite because the ground cannot analyze the signal or the signal does not contain the real-time position information of the satellite, a high-performance radar system is currently used to measure the angle of the cone scanning radar or the angle measurement of the ratio-amplitude monopulse radar. The satellite that sends out the signal performs angle capture to determine the signal source satellite, but this method has high requirements on the performance of the radar system, and the calculation amount of the algorithm and the implementation process are complex and cumbersome, and the implementation cost is high

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