一种空间目标速度测量方法的研究与实现  

Study and implementation of a velocity-measure method for space target

作　　者：杨广玉[1] 纵瑞方[1] 徐振华[1] 

机构地区：[1]中国电子科技集团第38研究所,安徽合肥230088

出　　处：《电子设计工程》2014年第7期95-97,共3页Electronic Design Engineering

摘　　要：由于空间目标的运行速度快,距离远,采用传统PD模式,在相参积累的时间内,会面临距离走动的问题,利用多谱勒通道估算目标速度必然会受到影响。为了解决问题,首先采用小带宽多脉冲搜索模式初步测量出目标速度和距离信息;之后采用大带宽PD模式对目标进行再次探测并利用Keystone变换的方法对目标距离走动补偿后再进行相参积累,最终实现目标速度的精确估计。仿真表明该方法可准确测出目标速度。Because of the high-velocity and long-distance of the space-target, Classical PD-mode will be confronted with the problem of the range migration, Velocity estimation will be effected by virtue of doppler frequency of target. In order to solve the question： Firstly, the velocity and range of the target will be acquired by the scan mode of narrowband and multi-pulse; Then, the target will be detected by the PD mode of wideband again, and the coherent integration is carried out after range- migration compensation based on keystone transform, finally the accurate velocity estimation of space targets is realized. The simulation results show that the method can acquire accurate target velocity.

关 键 词：空间目标 KEYSTONE变换 距离走动 速度测量 

分 类 号：TN958[电子电信—信号与信息处理]