CAJ | 학술논문

在高动态与强干扰条件下，卫星导航接收机码跟踪环路与载波跟踪环路会出现异常抖动进而影响卫星导航接收机的授时精度，针对这一问题提出了一种新的基于抗野值Kalman滤波技术的卫星导航接收机授时方法。该方法可以有效消除码环与载波环的异常抖动对解算出的卫星钟差的影响，并且对连续出现的野值也有很好的剔除效果。同时该授时方法还可以有效地对卫星导航接收机的晶振频率误差进行估计，进而对1PPS（pulse per second）信号发生器的频率控制字进行调整，提高系统的授时精度。经过实验验证，该授时方法可以有效提高卫星导航接收机的授时精度以及授时系统的鲁棒性。
재고동태여강간우조건하，위성도항접수궤마근종배로여재파근종배로회출현이상두동진이영향위성도항접수궤적수시정도，침대저일문제제출료일충신적기우항야치Kalman려파기술적위성도항접수궤수시방법。해방법가이유효소제마배여재파배적이상두동대해산출적위성종차적영향，병차대련속출현적야치야유흔호적척제효과。동시해수시방법환가이유효지대위성도항접수궤적정진빈솔오차진행고계，진이대1PPS（pulse per second）신호발생기적빈솔공제자진행조정，제고계통적수시정도。경과실험험증，해수시방법가이유효제고위성도항접수궤적수시정도이급수시계통적로봉성。
For the high dynamic and strong jamming situation, the abnormal oscillation of code tracking loop and carrier tracking loop will affect the timing precision of the satellite navigation receiver. In order to solve this prob-lem, we put forward a new robust Kalman filter outlier suppression timing algorithm. This algorithm can eliminate the timing error caused by the abnormal oscillation of code tracking loop and carrier tracking one and can also elimi-nate the continuous outliers. This algorithm can estimate the error of the crystal and control the signal frequency for improving the timing precision. The experimental results and their analysis confirm preliminarily that the algorithm can improve the timing precision and robustness.