您的位置:首页  > 论文页面

基于最小二乘等效的AA-BiSAR二维频谱研究

发表时间:2014-04-30  浏览量:1566  下载量:488
全部作者: 黄欢
作者单位: 中国民用航空飞行学院模拟机训练中心
摘 要: 二维频谱是研究机载双基合成孔径雷达(airborne/airborne bistatic synthetic aperture radar, AA-BiSAR)频域成像算法的基础。研究提出一种适用于AA-BiSAR的简单、精确的二维频谱。首先采用最小二乘定理将双基斜距史等效为方位向时间的双曲线函数,然后根据得到的表达式,利用驻定相位定理(principle of stutionary phase, POSP)得到二维频谱的解析式。对于AA-BiSAR,该二维频谱模型不仅表述简洁而且近似精确。最后,通过对AA-BiSAR的仿真验证该等效方法的有效性。
关 键 词: 信息处理技术;二维频谱;最小二乘等效;机载双基合成孔径雷达
Title: Study on two-dimensional frequency spectrum for AA-BiSAR based on least square approximation
Author: HUANG Huan
Organization: Flight Simulator Training Center, Civil Aviation Flight University of China
Abstract: The analytic model of airborne/airborne bistatic synthetic aperture radar (AA-BiSAR) two-dimensional frequency spectrum is the basis of efficient image focusing techniques. A concise and accurate analytic expression of the two-dimensional frequency spectrum is derived for AA-BiSAR in this paper. Firstly, the overall slant range history of the BiSAR is fitted into a hyperbola function of the azimuth time with minimum error in the least square meaning. Then, the principle of stationary phase (POSP) is performed to obtain the analytic two-dimensional frequency spectrum with the obtained expression. The proposed model is concise and accurate for the AA-BiSAR. Finally, simulation results with AA-BiSAR demonstrate the validity of the proposed model.
Key words: information processing technology; two-dimensional frequency spectrum; least square approximation; airborne/airborne bistatic synthetic aperture radar
发表期数: 2014年4月第8期
引用格式: 黄欢. 基于最小二乘等效的AA-BiSAR二维频谱研究[J]. 中国科技论文在线精品论文,2014,7(8):760-765.
 
0 评论数 0
暂无评论
友情链接