线性调频信号数字脉冲压缩技术分析.pdfVIP

20 11 1 1 J an. 20 11 34 1 M odern Electro nics T echniqu e V ol . 34 N o. 1 线性调频信号数字脉冲压缩技术分析 郑力文, 孙晓乐 ( , 471009) 在线性调频信号脉冲压缩原理的基础上, 利用M atlab 对数字脉冲压缩算法进 仿真, 得到了雷达目标回波信号 经过脉冲压缩后的仿真结果运用数字脉冲压缩处理中的中频采样技术与匹配滤波算法, 对中频采样滤波器进 了优化, 降低了实现复杂度, 减少了运算量与存储量最后总结了匹配滤波的时域与频域实现方法, 得出在频域实现数字脉冲压缩 方便, 运算量小, 更适合线性调频信号 线性调频信号; 脉冲压缩; 中频采样; 匹配滤波 T N9 1134 A 100437 3X( 20 11) 0100 3904 Digital Pulse Compression Technology of Linear Frequency Modulation Signal ZH E NG L i w en , SU N X iaole ( China Airbor ne Missile Academy, L uo yang 471009, C hina) Abstract Based o n the pr inciple of pul se com pr essio n techno lo gy o f linear fr equ ency mo dulat ion signal , the simulatio n r e sult of radar echo sig nal co mpressed by the pulse can be ga ined by u sing M atlab to simulate the dig ital pulse com pr essio n algo r ithm . Co mbining the techno log y o f IF sampling w ith the m atching f ilt er alg or ithm in the digit al pul se compression processing and optim azing the I F sampling f ilter, w hich can rem arkably reduce the complex ity and decr ease t he mult iplier op eration and the m emo ry . Finally , the implem entation m ethods of m atching f ilter algo rithm in tim e dom ain and fr equency dom a in are summ ar ized , the dig ital pulse compression can be im plem ented on frequ ency do m ain . Keyw ords linear frequ ency modulatio n signal; pul se com pr essio n; IF sampling ; m atching f ilter , chirp , [ 12] , , 1 , ,