多模卫星导航信号误差分析

Error Analysis of Multi-mode Satellite Navigation Signal

多模卫星导航接收机信号模拟器关键技术涉及对导航信号误差的模拟。基于对目前全球导航卫星系统(GNSS)技术发展状况的了解和对系统的脆弱性分析,从影响接收机定位精度的数据源信号及信号传输过程中的误差特性入手,逐一对误差的性质、大小及对测量产生的影响进行了详细研究,给出静态误差模型的具体计算过程。最后介绍了高动态环境下误差模型的一般研究方法。

Core technique for Multi-mode satellite navigation receiver signal simulator involves to the simulation of navigation signal error. Based on the comprehension of Global Navigation Satellite System （GNSS） technique status and analysis of GNSS vulnerability, commence from the source signal which affect position accuracy and error characteristic in progress of transfer, and analyze their property, size and effect to the measurement, etc. Concrete calculation process of static error model is adduced. Additionally, general method is proposed as a solution of the error model under high-dynamic situation.