基于修正球坐标的红外目标跟踪

Target Tracking with Infrared Station Based on MSC

仅有角度信息的红外单站对机动目标跟踪不容易实现。修正球坐标系(MSC)所选择的状态变量包含有丰富的目标角度、速度和距离信息。然而,采用这种方式较为复杂且计算量大。为解决非线性和离散化的问题,采取n步逐渐逼近的方式进行状态更新,并且加入在修正球坐标系中因坐标系旋转产生的加速度。通过减小线性化误差和简化状态更新过程使得跟踪效果有较大改进。但是仅依靠角度信息,在MSC中单站仍然只适合匀速或缓变速的场合。仿真结果证明了此结论。

Only using the angle information,infrared target tracking with single station is difficult.The states variable in modified spherical coordinates（MSC） are angle information and velocity informat tion and range information.But the old method is complex and needs lot of computation.Aiming at nonlinear and discreting problem,the n-step approaching during updating the state variable is adopted,acceleration is used produced by the coordinates＇ arcumvoling.The tracking effect is improved by minishing the livearization errors and predigesting the course.But the method using the bearing information only suits to tracking object with constant velocity or velocity changing tardily in MSC with one station.The conclusion is proved by simulation results.