一种微惯性/软件接收机超紧组合方案研究

System Design of an Ultra-Tight MIMU/Software Receiver Integration

为了改善软件接收机性能,提出一种微惯性/软件接收机非线性超紧组合方案.分析接收机跟踪环路和微惯性测量组件非线性的基础上,提出了非线性跟踪滤波器和非线性组合滤波器的设计方法.基于跑车实验数据完成了该超紧组合系统性能的试验验证.结果表明,在即时码In-phase/Quadra-phase信号较弱的情况下,该超紧组合跟踪环路仍保持较高的跟踪精度.

In order to improve the performances of software receiver,an ultra-tight Micro-Inertial Measurement Unit（MIMU）/software receiver integration method is studied.The nonlinear tracking loop filter and integrated navigation filter are designed by analyzing the nonlinear characteristics of receiver tracking loop and MIMU.The performance of closed-loop ultra-tight integrated system is evaluated by experimental software receiver and Micro-Electro-Mechanical Systems（MEMS） inertial data collected in real dynamic environments.The results show the improvement in the performance of the tracking loop in this ultra-tight aided configuration under faintish In-phase/Quadra-phase conditions.