Signal calibration method, and device generated based on imbalance of I path and Q path, and storage medium

A non-transitory storage medium, storing a computer program, wherein, the program when executed by a processor performs a signal calibration method generated based on an imbalance of an I path and a Q path, the signal calibration method generated based on the imbalance of the I path and the Q path comprises:

• sending a cosine signal and a sine signal through a signal generator with configurable signal amplitude and phase when receiving a signal to be calibrated, transmitting the cosine signal and the sine signal in the I path and the Q path respectively, each path corresponding to a signal, the cosine signal and the sine signal being configured to loop back to a signal receiving direction after passing through a transmitting amplifier;
• processing a signal obtained by a down converter in the signal receiving direction according to a preset Fourier transformation rule;
• performing a phase adjustment and an amplitude adjustment by adjusting the signal generator, gain amplifiers of I path and Q path analog domains, and a corresponding digital domain according to the processing result, respectively, so as to determine an appropriate phase cancellation value and an appropriate amplitude cancellation value for an image signal;
• and
• calibrating the image signal corresponding to the signal to be calibrated according to the phase cancellation value and the amplitude cancellation value.

A signal calibration device generated based on an imbalance of an I path and a Q path, comprising a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, the processor when executing the program performs a signal calibration method generated based on the imbalance of the I path and the Q path, the signal calibration method generated based on the imbalance of the I path and the Q path comprises:

• sending a cosine signal and a sine signal through a signal generator with configurable signal amplitude and phase when receiving a signal to be calibrated, transmitting the cosine signal and the sine signal in the I path and the Q path respectively, each path corresponding to a signal, the cosine signal and the sine signal being configured to loop back to a signal receiving direction after passing through a transmitting amplifier;
• processing a signal obtained by a down converter in the signal receiving direction according to a preset Fourier transformation rule;
• performing a phase adjustment and an amplitude adjustment by adjusting the signal generator, gain amplifiers of I path and Q path analog domains, and a corresponding digital domain according to the processing result, respectively, so as to determine an appropriate phase cancellation value and an appropriate amplitude cancellation value for an image signal;
• and
• calibrating the image signal corresponding to the signal to be calibrated according to the phase cancellation value and the amplitude cancellation value.