Test method and device for Doppler shift, and readable storage medium

Abstract

The present application provides a Doppler shift testing method and device, and a readable storage medium. The testing method includes: obtaining the position information of the gateway station and the position information of the satellite; the position information of the gateway station and the position information of the satellite are all time-synchronized information; according to the position information of the gateway station Calculate the first Doppler offset between the gateway station and the satellite with the position information of the satellite and the preset algorithm; measure the downlink signal between the gateway station and the satellite, and according to The downlink signal calculates a second Doppler offset between the gateway station and the satellite; determines the gateway according to the first Doppler offset and the second Doppler offset The compensation accuracy of the Doppler shift between the station and the satellite. This method is used to measure the accuracy of the gateway station for Doppler frequency shift and time offset compensation.

Description

technical field [0001] The present application relates to the field of satellite communication, in particular, to a method and device for testing Doppler shift, and a readable storage medium. Background technique [0002] The satellite Internet system is a low-orbit satellite Internet system with globalization, large bandwidth, high speed, and low delay. It not only has the advantages of wide coverage and relatively flexible cell configuration in satellite communication, but also has the advantages of large bandwidth and high speed in ground communication 5G. And, because it is a low-orbit Internet system, its relative delay is low. [0003] As an important part of the ground part of the low-orbit satellite Internet, the gateway station needs to be developed in accordance with the corresponding engineering standards, and it is necessary to conduct a standard compliance test for the gateway station. However, due to the rapid movement of low-orbit satellites, the large Doppl...

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Problems solved by technology

However, due to the rapid movement of low-orbit satellites, the large Doppler frequency offset and delay changes in the feeder link, the gateway station needs to compensate for the Doppler offset in advance according to certain rules in order to ensure the normal availability of the communication link.

[0004] Therefore, whether the compensation of the Doppler offset of the gateway station is accurate is more important for satellite communications. In the prior art, there is only a calculation method for the compensation of the Doppler offset, which cannot satisfy the compensation requirements of the gateway station. Debugging and acceptance requirements

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