In the bistatic radar, the unsynchronized clock source will bring carrier frequency deviation and time synchronization error to the received signal, which may affect the accurate positioning and slow micro-Doppler detection.Aiming at these factors, a combined processing algorithm is proposed based on phase compensation of direct wave phase and frequency-domain cancellation of the range Doppler spectrum.The algorithm does not need a shared clock source for the bistatic system.Firstly, all received signals are Scompensated by the phase of the direct wave to offset the phase error caused by carrier frequency deviation.Then, the side-peak interference caused by the time synchronization error is effectively eliminated by frequency-domain cancellation using the data of range Doppler spectrum.This algorithm has low complexity and is easy to implement.The validity of the algorithm is verified by theoretical derivation and experiments.