Frequency deviation compensation method and electronic equipment

Abstract

The present application discloses a frequency offset compensation method and electronic device, relating to the field of communications, and is used to compensate for the crystal oscillator frequency offset and Doppler frequency offset of an electronic device during satellite communications. The frequency offset compensation method includes: obtaining a direction vector of the electronic device pointing toward the satellite in the electronic device coordinate system based on the phase difference of downlink signals from a satellite received by multiple antennas; obtaining a direction vector of the electronic device pointing toward the satellite in the earth coordinate system based on the direction vector of the electronic device pointing toward the satellite in the electronic device coordinate system and the attitude information of the electronic device; obtaining the coordinates of the satellite in the earth coordinate system based on the direction vector of the electronic device pointing toward the satellite in the earth coordinate system; obtaining the Doppler frequency offset and crystal oscillator frequency offset of the downlink signal based on the carrier frequency of the downlink signal transmitted by the satellite and the coordinates of the satellite in the earth coordinate system at multiple moments; and compensating the carrier frequency of the uplink signal sent by the electronic device.

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