DBS多普勒质心估计算法研究  

Study on DBS Doppler Centroid Estimation Algorithm

作　　者：万红进[1] 李辉[1] 

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2010年第2期37-40,共4页Fire Control Radar Technology

摘　　要：雷达导引头在利用DBS技术成像时,需要根据天线扫描过的范围对各子图进行拼接。拼接时需要取出回波频谱中主波束对应的带宽,但是子图拼接经常受到多普勒中心不可靠的困扰,过低的估计精度会影响定位,严重时甚至会影响图像质量。本文研究基于回波的多普勒质心估计算法,结合实测数据进行估计,最后给出综合评价。When the radar seekers utilize the DBS technique to image, it is needed to mosaic subimages according to the range of the antenna scanning. The bandwidth corresponding to the main beam in the echo spectrum is needed to be extracted while performing mosaic, however, the mosaic of subimages is often puzzled by the unreliable Doppler centroid. The low estimating accuracy will affect positioning, even affect the imaging quality. The method of Doppler centroid estimation based on the echo is studied, which is estimated by combining the practical measured data, finally, the integrated evaluation is given.

关 键 词：DBS 多普勒中心估计 正弦拟合法 平均互相关系数 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]