共形陣列誤差校正方法研究
[Abstract]:Conformal array antenna is an antenna array which is consistent with the shape of object. Compared with traditional planar arrays, conformal arrays should not only meet the performance requirements of the antenna itself, but also give consideration to the aerodynamic characteristics of the carrier. Because of the advantages of conformal arrays, conformal arrays are widely used in radar, communication, navigation and other related fields. In planar array, the existence of array error will seriously affect the performance of spatial spectrum estimation. At this point, we can use some classical algorithms for error correction. In conformal array, the difference of array element pattern will lead to the inapplicability of traditional array error correction algorithm. Therefore, it is of great significance to study the error correction method of conformal array. In this paper, for two conformal arrays with different structures, two kinds of array error correction algorithms are proposed to accurately estimate the source angle when array errors exist. The main contents of this paper are as follows: firstly, the signal model of planar array is established, and the basic characteristics of uniform linear array and uniform circular array are described in detail. At the same time, the signal model and array error model of conformal array are established, and the effect of array error on array error is analyzed through experiments. The effectiveness of two classical array error correction algorithms, active correction method and self-tuning method, is verified. Secondly, an active correction algorithm based on various errors of circular conformal array is proposed. Here, many kinds of errors include array element amplitude-phase error, array element mutual coupling error and array element position error, and these errors are equivalent to azimuth dependent array element amplitude and phase errors. In the algorithm, the whole array and the corresponding spatial domain are divided into several subarrays and corresponding subdomains by subarray segmentation, which solves the shadowing effect of conformal arrays. In each subdomain, several auxiliary sources are set up and the azimuth dependent error coefficients are obtained by using active correction method, and the real array flow pattern matrix of each subarray is reconstructed. Based on the reconstructed array flow pattern matrix, the accurate estimation of the source angle can be realized. Simulation results show the superiority of the algorithm. Finally, a self-tuning algorithm based on the mutual coupling error of cylindrical conformal arrays is proposed. Based on the idea of dimension reduction, the two-dimensional DOA (DOA) estimation is transformed into two one-dimensional DOA estimators, namely, the source pitch angle estimation and the source azimuth estimation. The rotation invariant subspace (ESPRIT) algorithm and rank loss method (RARE) are used to estimate the pitch angle and azimuth angle of the source, respectively. The mutual coupling coefficient can be estimated by estimating the source angle. Simulation results show the effectiveness of the algorithm.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類(lèi)號(hào)】:TN820.15
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 宋銀鎖;制導(dǎo)武器天線的共形陣列[J];航空兵器;1997年04期
2 楊超;阮穎錚;;自適應(yīng)共形陣性能的研究[J];雷達(dá)與對(duì)抗;1993年03期
3 張莉,李世智;飛行載體上自適應(yīng)共形陣的研究[J];電子學(xué)報(bào);1994年09期
4 柴舜連,姚德淼;任意旋轉(zhuǎn)對(duì)稱(chēng)面共形陣互耦的分析[J];電子科學(xué)學(xué)刊;1996年06期
5 諸潔琪;陳伏虎;;一種交替投影加權(quán)算法在共形陣中的運(yùn)用[J];聲學(xué)與電子工程;2013年04期
6 高飛;謝文沖;王永良;;機(jī)載共形陣?yán)走_(dá)雜波抑制方法研究[J];電子學(xué)報(bào);2010年09期
7 詹昊可;蔡志明;苑秉成;;一種共形陣主動(dòng)聲納空時(shí)自適應(yīng)混響抑制方法[J];聲學(xué)技術(shù);2007年03期
8 張學(xué)敬;楊志偉;廖桂生;;半球共形陣列的兩種虛擬變換方式性能對(duì)比[J];西安電子科技大學(xué)學(xué)報(bào);2014年03期
9 席曉峰;丁君;徐騰;;共形陣空域極化域聯(lián)合濾波研究[J];計(jì)算機(jī)仿真;2008年06期
10 張玉潔;龔書(shū)喜;王文濤;凌勁;;基于改進(jìn)遺傳算法的非規(guī)則共形陣的研究[J];電波科學(xué)學(xué)報(bào);2010年04期
相關(guān)會(huì)議論文 前4條
1 肖國(guó)有;;共形陣的布陣方法及可視化圖形表示[A];2004年全國(guó)水聲學(xué)學(xué)術(shù)會(huì)議論文集[C];2004年
2 肖國(guó)有;;共形陣的結(jié)構(gòu)形態(tài)及其特點(diǎn)分析[A];2005年全國(guó)水聲學(xué)學(xué)術(shù)會(huì)議論文集[C];2005年
3 何明;呂明;;圓臺(tái)陣天線方向性能分析[A];第五屆衛(wèi)星通信新業(yè)務(wù)新技術(shù)學(xué)術(shù)年會(huì)暨衛(wèi)星通信系統(tǒng)網(wǎng)間互聯(lián)互通與接口標(biāo)準(zhǔn)研討會(huì)論文集[C];2009年
4 詹昊可;蔡志明;苑秉成;;魚(yú)雷共形陣主動(dòng)聲納空時(shí)自適應(yīng)混響抑制方法[A];中國(guó)聲學(xué)學(xué)會(huì)2007年青年學(xué)術(shù)會(huì)議論文集(下)[C];2007年
相關(guān)博士學(xué)位論文 前5條
1 鄒麟;基于幾何代數(shù)的共形陣列空域信號(hào)處理研究[D];電子科技大學(xué);2012年
2 齊飛林;復(fù)合制導(dǎo)體制下毫米波共形陣列的數(shù)字波束形成方法研究[D];西安電子科技大學(xué);2010年
3 何慶強(qiáng);共形輻射單元及共形陣列研究[D];電子科技大學(xué);2008年
4 李鑫;基于差分進(jìn)化算法的共形陣及多頻天線研究[D];西安電子科技大學(xué);2013年
5 楊鵬;基于復(fù)雜載體的共形軟件天線關(guān)鍵技術(shù)研究[D];電子科技大學(xué);2012年
相關(guān)碩士學(xué)位論文 前10條
1 馬英英;相干信源條件下的錐面共形陣列DOA估計(jì)[D];哈爾濱工業(yè)大學(xué);2016年
2 平伏龍;矢量共形陣列DOA與極化參數(shù)聯(lián)合估計(jì)算法研究[D];電子科技大學(xué);2016年
3 尹樹(shù)年;共形陣列誤差校正方法研究[D];合肥工業(yè)大學(xué);2016年
4 黃艷;共形陣的方向圖綜合及自適應(yīng)波束形成研究[D];電子科技大學(xué);2013年
5 張子豪;基于共形陣的遠(yuǎn)場(chǎng)聲陣列定位關(guān)鍵技術(shù)研究[D];電子科技大學(xué);2015年
6 劉俊;共形陣低副瓣方向圖綜合方法研究[D];西安電子科技大學(xué);2009年
7 樊良慧;基于智能優(yōu)化算法的共形陣方向圖綜合[D];合肥工業(yè)大學(xué);2015年
8 賀瑩;錐臺(tái)共形陣列方向圖綜合研究[D];南京航空航天大學(xué);2014年
9 紀(jì)文靜;機(jī)載共形陣列誤差估計(jì)與補(bǔ)償方法研究[D];西安電子科技大學(xué);2014年
10 何明;自適應(yīng)共形陣列天線的研究與分析[D];電子科技大學(xué);2009年
,本文編號(hào):2379441
本文鏈接:http://sikaile.net/kejilunwen/xinxigongchenglunwen/2379441.html