摘要
全球导航卫星系统(GNSS)接收机采用空时抗干扰处理能够有效地抑制宽、窄带干扰,但该结构可能导致GNSS信号导航精度下降。推导空时自适应处理对卫星信号的影响,通过改进相关函数计算方法,得到逼近理想自相关函数的接收机相关函数,从而有效地改善了空时抗干扰后接收机精度下降的状况。仿真结果表明,方法能够校正空时自适应处理产生的相关函数畸变,从而提高空时抗干扰后接收机的导航定位精度。
The Space-Time Adaptive Processing（STAP） can effectively restrain the wideband and narrowband interferences for Global Navigation Satellite System（GNSS） receivers. But it also leads to the location precision reduction of GNSS receivers. The influence of STAP on the received satellite signal in the GNSS receiver is deduced. Then the correlation function calculation is studied and the local reference signal is modified. By obtaining the approximately ideal correlation function curve, the reduction of location precision is effectively restrained. Simulation results indicate that the method in this paper can correct the distortion of correlation function caused by STAP, which leads to the improvement of location precision of GNSS receiver.
出处
《遥测遥控》
2016年第3期23-28,共6页
Journal of Telemetry,Tracking and Command
关键词
全球导航卫星系统
空时自适应处理
相关函数校正
Global Navigation Satellite System（GNSS）
Space-Time Adaptive Processing（STAP）
Correlation function correction
