利用GPS对惯性导航装置进行飞行测试

Application of Global Positioning System in the Flight Testing of Inertial Navigation Units

文中研究了利用卫星导航系统(GPS)作为位置和速度基准,在飞行中对惯性导航装置(INU)进行测试的方法,给出了测试参考数据。与一般测试靶场设备相比,这种方法的优点是成本低、使用方便,而且能够进行连续的动态测试,反映整个惯导装置的误差传描特性,标定系统的主要误差源。测试精度完全适用于检验中等精度的飞机惯导装置。

The use of a Global Positioning System(GPS)receiver as a position and velocity reference in the flight testing of Inertial Navigation Units(INU)is described. Flight testing data and some consideration to the operational aspects of testing arc given and its improvements are suggested.The method is low cost and freely available.in contrast to the generally used goverment ranges,the continuous GPS data allows detailed analysis.It is also possible to discern the system error characteristics,and the accuracy is sufficient for the testing of medium accuracy aircraft inertial navigators.