用GPS评定IMU（惯性测量装置）误差

在导弹飞行试验时，基于ＧＰＳ的弹道基准系统可替代常规雷达。由于ＧＰＳ弹道基准的精度高，所以可用来评定导弹惯性测量装置的性能。在两发现役的和平保卫者导弹发射前配置了ＧＰＳ转发器和三波段天线。根据ＧＰＳ测量的矩离、矩离增量数据，用卡尔曼滤波方法评定各个ＩＭＵ误差，结果证明ＧＰＳ优于雷达。

The Use of GPS for Evaluating Inertial Measurement Unit Errors

A trajectory refenence system based on the Global Positioning System(GPS)can be used instead of conventional radars during missile flight tests.The high quality of the GPS-based trajectory reference makes it useful for evaluating the performance of the missile's Inertial Measurement Units(IMUs).Such a system was installed and flight tested on two recently launched ballistic missiles.The GPS hardware configuration used on these flight is described.A kalman filter approach The ability of the GPS-based system to identify IMU errors is compared to that of radar;GPS is found to provide superior estimates of the IMU errors.