Research on Anti-interference of GNSS in Vehicle Navigation Based on Carrier Frequency De-amplification Method
With the wide application of intelligent vehicles,the operational stability of vehicle network control system is particularly important.In order to improve the accuracy of vehicle navigation,a GNSS anti-interference error analysis method based on carrier frequency deamplification is designed.Spatial adaptive processing algorithm is adopted to control GNSS interference,so that beam gain can be generated when satellite signal interferes,and carrier phase error should be fully eliminated when satellite signal strength is increased and the algorithm is used to suppress interference.This algorithm is called de-reamplification algorithm.The results show that the carrier phase error may increase under the action of DR,and the frequency estimate can be accurately obtained by the frequency precision estimation method,which is conducive to improve the carrier frequency difference between the satellite re-ceived signal and the reamplified signal.The carrier phase measurement error also increases with the increase of ar-ray error.The carrier phase measurement error also exists because of array error when using MVDR algorithm,and the array phase error is particularly sensitive.
global satellite navigation systemquadratic solution rediffusion algorithmanti-interferencemeasurement error
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维普
