Satellite signal capturing method and device

[0052] An embodiment of the present invention provides a satellite signal acquisition method, the method comprising: acquiring a satellite signal, and performing signal processing on the satellite signal to obtain an intermediate frequency digital signal corresponding to the satellite signal, and performing carrier de-carrier down-conversion on the intermediate frequency digital signal Sampling to obtain 2L point baseband satellite signals, complex multiplication of the obtained 2L local pseudo-code frequency domain extension signal and M inverse Fourier IFFT modules to obtain M point time domain signals, and pass Fourier The transform FFT module performs Fourier transform on the M-point time-domain signal, and obtains a parallel Doppler search result under a code phase; performs peak detection on the Doppler search result, obtains the maximum point, and records the maximum point Code phase and Doppler value; according to the verification result of the code phase and Doppler value