摘要
研究一种线性阵列逆合成孔径雷达(LAAISAR)的成像处理方法。分析线性阵列ISAR的几何模型并给出成像处理流程。针对阵列ISAR同时接收多路回波信号的特点,采用传统的距离-多普勒算法对每路回波进行成像;利用互相关法进行图像粗配准;在此基础上利用图像熵法进行图像细配准,得到匹配的目标图像。基于该处理流程的仿真实验表明,该处理方法能够充分利用阵列ISAR的每路回波信息,使目标图像精确配准,且能有效提高目标分辨率。
An imaging processing method for the Linear Array Antenna ISAR（LAA ISAR） is concerned. The geom- etry model of LAA ISAR is analyzed and the imaging processing flow is given as well. Based on the character that LAA ISAR can receive multi-path echoes, range-Doppler algorithm is adopted to realize the image of each echo. The cross-correlation method is used for image rough registration. On the basis of it, the method based on image en- tropy is used for image fine registration, and the matched image is obtained. Simulation results based on this pro- cessing flow show that this method can make use of every echo adequately, the image registration is realized finely, and the target resolution is enhanced effectively.
出处
《计算机工程与应用》
CSCD
2012年第32期125-128,248,共5页
Computer Engineering and Applications
