基于软件接收机的GNSS/INS深组合导航算法研究  

GNSS/INS Deep Integration Algorithm with Application to Software Defined Receiver

作　　者：陈杨 唐艳 周伟 徐昕诰 

机构地区：[1]61081部队

出　　处：《全球定位系统》2013年第1期62-66,共5页Gnss World of China

摘　　要：深组合导航系统将导航参数估计与GNSS卫星信号跟踪融合在一起,将相关器的输出I/Q信息作为GNSS/INS组合导航kalman滤波器的观测量,提高系统的导航精度、抗干扰性和动态性能。利用GNSS软件接收机方便处理基带信号的优势进行深组合导航算法研究,推导了深组合kalman滤波器的观测方程。仿真结果表明:在高动态条件下,深组合导航系统的导航精度明显优于紧组合导航系统的导航精度,位置误差稳定在2m范围内,速度误差稳定在0.04m/s内。In the GNSS/INS deep integration system parameter estimation is used to fuse with GNSS signal tracking , I and Q Output of Correlator as measurement of Kalman filter can make navigation system precision high , high-dynamics, and high-jamming environments. Based on base band signal processing of GPS receiver, study of the integrated navigation arithmetic is presented, and the observation equation is proposed. Simulation shows that the deep integration system can improve the navigation accuracy greatly compared with tight integration system, and its position error is less than 2 m and velocity error less than 0.04 m/s.

关 键 词：深组合 软件接收机 跟踪环路 I Q支路 高动态 

分 类 号：TN965.5[电子电信—信号与信息处理]