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GNSS spoofing is extremely deceitful and destructive because it can lead victim receivers to output misleading time and position information.Therefore,timely and low cost spoofing detection and mitigation is of great importance for critical GNSS applications and services.This paper presents a method for GNSS spoofing mitigation based on joint detection of code Doppler and carrier Doppler in acquisition.Subsequently,the performance of the method is evaluated.Theoretical and simulation results demonstrate that the method is effective,and it does not require additional hardware.