基于载波频率解重扩方法的汽车导航GNSS抗干扰研究  

Research on Anti-interference of GNSS in Vehicle Navigation Based onCarrier Frequency De-amplification Method

作　　者：彭淑怀 Peng Shuhuai(School of Automotive Engineering,Zhengzhou City Vocational College,Zhengzhou Henan 452370,China)

机构地区：[1]郑州城市职业学院汽车工程学院,河南郑州452370

出　　处：《山西电子技术》2024年第6期91-93,共3页Shanxi Electronic Technology

摘　　要：随着智能车辆的广泛应用,车载网控系统的运行稳定性显得尤为重要。为了提高汽车导航精度,设计了一种基于载波频率解重扩的GNSS抗干扰误差分析方法。采取空域自适应处理算法对GNSS进行干扰控制,实现在卫星信号干扰时产生波束增益,载波相位误差在卫星信号强度提高及算法抑制干扰的过程中需要充分消除,称其为解重扩算法。研究结果表明:载波相位误差在DR作用下有可能会增加,频率估计值可通过频率精估方法进行精准获取,有利于改善卫星接收信号与重扩信号载波频率差异性。载波相位测量误差随着阵列误差增大也呈现增大趋势,在应用MVDR算法时载波相位测量误差也由于存在阵列误差而存在,阵列相位误差表现尤为敏感。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 received signal and the reamplified signal.The carrier phase measurement error also increases with the increase of array error.The carrier phase measurement error also exists because of array error when using MVDR algorithm,and the array phase error is particularly sensitive.

关 键 词：全球卫星导航系统 解重扩算法 抗干扰 测量误差 

分 类 号：TN973[电子电信—信号与信息处理]