ARS辅助SINS/BDS组合导航系统性能仿真分析

Simulation of Navigation Performance Analysis of SINS/BDS Based on ARS Aidance

捷联惯导/北斗双星定位组合系统(SINS/BDS)可采用间段组合的方式以避免“北斗”系统有源定位暴露目标的缺点;多普勒主动雷达导引头(ARS)可利用波束速度连续辅助惯导,弥补“北斗”系统无速度信息、不能全程使用的缺点。以巡航导弹为应用对象构建了SINS/BDS/ARS卡尔曼组合导航滤波器,探讨利用ARS提高SINS/BDS组合系统精度的潜力。研究表明ARS辅助可降低BDS接收机关闭期间SINS导航误差的增长速度,加快BDS接收机工作期间SINS/BDS组合速度信息的收敛速度,转向机动时辅助效果更好。利用该方法可在不增加设备和成本的前提下提高SINS/BDS组合导航系统精度,降低惯性器件的精度,缩减BDS接收机工作时间,具有一定的应用潜力。

To avoid exposure, BeiDou System （BDS） receiver should not work continually during integrating with Strapdown Inertial Navigation System （SINS）. While Doppler Active Radar Seeker （ARS） could be aided SINS by beam velocity all the times and remedy the BDS＇s default of lacking velocity information and continual working ability. So, SINS/BDS/ARS integration navigation filter was constructed to explore the potentials of ARS aiding SINS/BDS for cruise missile. Computer simulation shows that, with ARS abidance, the increment of SINS/BDS navigation error can be restrained when the receiver is absent and the convergence of SINS/BDS integrated velocity can be quickened when the receiver works. The abidance effect is better during horizon maneuver especially. The research means ARS velocity information not only to improve SINS/BDS navigation performance without extra equipment and cost, but also to decrease the demand of precision of inertial sensors and working time of BDS receiver.