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機(jī)載雷達(dá)自適應(yīng)對(duì)角加載參數(shù)估計(jì)方法

姜磊,  王彤

姜磊, 王彤. 機(jī)載雷達(dá)自適應(yīng)對(duì)角加載參數(shù)估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2016, 38(7): 1752-1757. doi: 10.11999/JEIT151003
引用本文: 姜磊, 王彤. 機(jī)載雷達(dá)自適應(yīng)對(duì)角加載參數(shù)估計(jì)方法[J]. 電子與信息學(xué)報(bào), 2016, 38(7): 1752-1757. doi: 10.11999/JEIT151003
JIANG Lei, WANG Tong. An Adaptive Estimation Method of Diagonal Loading Parameter for Airborne Radar[J]. Journal of Electronics & Information Technology, 2016, 38(7): 1752-1757. doi: 10.11999/JEIT151003
Citation: JIANG Lei, WANG Tong. An Adaptive Estimation Method of Diagonal Loading Parameter for Airborne Radar[J]. Journal of Electronics & Information Technology, 2016, 38(7): 1752-1757. doi: 10.11999/JEIT151003

機(jī)載雷達(dá)自適應(yīng)對(duì)角加載參數(shù)估計(jì)方法

doi: 10.11999/JEIT151003
基金項(xiàng)目: 

國家自然科學(xué)基金(61372133)

An Adaptive Estimation Method of Diagonal Loading Parameter for Airborne Radar

Funds: 

The National Natural Science Foundation of China (61372133)

  • 摘要: 對(duì)角加載可以提高空時(shí)自適應(yīng)處理在低樣本情況下的性能。然而，在實(shí)際中加載參數(shù)的確定是一個(gè)較為困難的問題。為了解決這個(gè)問題，該文提出一種基于回波數(shù)據(jù)的自適應(yīng)對(duì)角加載參數(shù)估計(jì)方法。該方法首先將對(duì)角加載問題轉(zhuǎn)化為Tikhonov規(guī)劃問題，然后利用廣義交叉驗(yàn)證準(zhǔn)則構(gòu)造優(yōu)化問題，最后采用割線法求解優(yōu)化問題、計(jì)算加載參數(shù)。仿真與實(shí)測數(shù)據(jù)結(jié)果表明該方法可以有效提高機(jī)載雷達(dá)在低樣本條件下的目標(biāo)檢測性能。
    Abstract: Diagonal loading method can be exploited to improve the performance of Space Time Adaptive Processing (STAP) in the face of limited training data. However, the diagonal loading level may be not easily determined in fact. To solve this problem, an adaptive parameter estimation method based on the received radar data is proposed. The diagonal loading problem is firstly transformed into the Tikhonov regularization problem. Then, Generalized Cross Validation (GCV) is introduced to construct the optimization problem. Finally, secant method is utilized to solve the optimization problem and calculate the loading parameter. The performance of the method is demonstrated using both simulated data and measured data. The results show that the method can improve the radar moving target detection performance in a limited sample support environment.
    • HTML全文
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  • 文章訪問數(shù):  1436
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出版歷程
  • 收稿日期:  2015-09-08
  • 修回日期:  2016-05-03
  • 刊出日期:  2016-07-19

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