摘要
导弹预警中有引导信息下的雷达搜索,可以快速地发现目标并有效地节约雷达资源。若已知导弹目标在自由段某一时刻的运动状态值及误差,可通过弹道预报方法计算误差传播情况进而确定目标进入雷达的搜索区域。导弹的弹道预报及状态值在各类坐标系下的转换是一个复杂的非线性变换,传统求偏导数矩阵的方法计算量大,使用无迹变换(UT变换)方法通过选取样点的方式可以快捷地处理各类复杂的非线性变换,在保证准确度的同时,减小了计算量。仿真实验表明,UT变换能够有效解决非线性问题,计算引导信息下的雷达搜索区域,并根据雷达的相应参数得到目标发现耗用时间。
Radar search under guidance information in missile early warning can quickly find targets and effectively save radar resources.If the motion state value and error of the missile targets at a certain time in the free section are known,the error propagation can be calculated via the trajectory prediction method to determine the targets entering the radar search area.Missile trajectory prediction and status value in all kinds of coordinates transition is a complex nonlinear transformation,for the traditional method of partial derivative matrix owning high computation,while unscented transform(UT)method via selecting sampling points which could easily deal with all kinds of complex nonlinear transformation,with guaranteeing the accuracy and reducing calculation at the same time.The simulation results show that the UT can quickly deal with nonlinear problems,determine the radar search area under the guidance information,and obtain the targets detection consumption time according to the corresponding parameters of the radar.
作者
王彪
孟凡坤
吴楠
王斌
WANG Biao;MENG Fankun;WU Nan;WANG Bin(Information Engineering University, Zhengzhou 450001,China;Unit 77626,Lhasa 850000,China)
出处
《信息工程大学学报》
2020年第1期20-26,共7页
Journal of Information Engineering University
