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I/Q幅度和相位不平衡对脉冲压缩的影响及其矫正方法
Alternative TitleThe Inf luence and Its Correction of the Imbalance of Ampl itudeand Phase of I/Q on the Pul se Compression
张云华; 姜景山; 北京8701信箱
Department国家863计划微波遥感技术实验室
Source Publication遥感技术与应用
2000
Volume15Issue:2Pages:78-82
ISSN1004-0323
Language中文
Keyword脉冲压缩雷达 接收机 i/q幅度 相位 a/d采样
Abstract就脉冲压缩雷达中接收机I/Q输出相位不平衡对脉冲压缩的影响以及矫正方法进行了研究,并提出了进行矫正的方法,研究表明,I/Q相位不平衡将引起旁瓣电平升高,主瓣宽度增加,当I/Q幅度相对误差在±%15以内,相位相对误差在±3°以内时,对脉冲压缩的影响不能,必须进行相位矫正处理,矫正方法的核心思想就是7将经过幅度和相位不平衡矫正后的I/Q信号考虑进参考函数中.模拟表明,经过矫正处理后,对脉冲压缩的改善非
Other AbstractA study on the influence of the imbalance of amp litude and phase of I/Q on the pulse comp ression and the w ay to correct it has been performed. Study show s that the imbalance of amp litude and phasew illmake the side lobe h igher and the w idth of main lob w ider. W hen the imbalance of amp litude is in the range of ±15% ,and the phase imbalance is in the range of ±3°, the influence can be neglected. W hen imbalance of amp litude is beyond the range of ±25% , and the phase imbalance is beyond the range of ±10°, how ever, the influence is serious and the correction must be done. The method of correction p roposed in th is paper is to consider the corrected I/Q into the reference function and then, perform the match ing filtering on the signal. Simulation results show that the effect of correction is very good. By doing so, w e can reduce the requirement on the hardw are design of I/Q demodulator.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1876
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
张云华,姜景山,北京8701信箱. I/Q幅度和相位不平衡对脉冲压缩的影响及其矫正方法[J]. 遥感技术与应用,2000,15(2):78-82.
APA 张云华,姜景山,&北京8701信箱.(2000).I/Q幅度和相位不平衡对脉冲压缩的影响及其矫正方法.遥感技术与应用,15(2),78-82.
MLA 张云华,et al."I/Q幅度和相位不平衡对脉冲压缩的影响及其矫正方法".遥感技术与应用 15.2(2000):78-82.
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