本文選題：陣列校正　切入點：幅相誤差　出處：《電子與信息學報》2017年08期 　論文類型：期刊論文

【摘要】：校正源信號方向角不容易精確測量,限制了陣列有源校正方法的精度。另一方面,無源校正方法難以應用于存在大陣列誤差的場合,其實際應用也受到嚴重限制。該文提出一種基于旋轉測量的陣列幅相誤差校正新方法,無需測量校正源信號方向角就能獲得較高的校正精度。該方法利用已知的陣列旋轉角度,基于最大似然準則獲得陣列幅相誤差、校正源信號方向角及其復振幅的無模糊估計。相對于校正源信號方向角,陣列旋轉角度通過專用測試轉臺更容易精確測量,因此該方法能以較小的代價獲得很高的校正精度。仿真實驗驗證了該方法的有效性和通用性。
[Abstract]:It is difficult to accurately measure the direction angle of the source signal, which limits the precision of the array active correction method. On the other hand, the passive correction method is difficult to be applied to the situation where there are large array errors. In this paper, a new method for correcting the amplitude and phase error of array based on rotation measurement is proposed, which can obtain higher correction accuracy without measuring the direction angle of the source signal. This method uses the known rotation angle of the array. Based on the maximum likelihood criterion, the array amplitude-phase error is obtained, and the direction angle of the source signal and its complex amplitude are estimated without ambiguity. Compared with the corrected direction angle of the source signal, the rotation angle of the array is more easily and accurately measured by the special test turntable. Therefore, the method can obtain high correction accuracy at a low cost, and the simulation results show that the method is effective and universal.
【作者單位】： 電子信息系統(tǒng)復雜電磁環(huán)境效應國家重點實驗室;武漢大學電子信息學院;
【基金】：CEMEE國家重點實驗室主任基金(CEMEE2014 Z0101B) 國家自然科學基金(U1333106,61331012,61371197) 國家重點研發(fā)計劃(2016YFB0502403)~~
【分類號】：TN911.7

【參考文獻】

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本文編號：1576039