电子科技
電子科技
전자과기
IT AGE
2012年
6期
71-74
,共4页
宽带自适应波束形成%恒定束宽%最小二乘算法
寬帶自適應波束形成%恆定束寬%最小二乘算法
관대자괄응파속형성%항정속관%최소이승산법
wideband adaptive beam forming%constant beam width%recursive least square (RLS) algorithm
宽带波束形成是相控阵雷达数字信号处理的难点。针对目前宽带波束形成只能满足单一恒定束宽或自适应情况，为兼具两种优势使雷达工作状态更佳，文中基于最小二乘算法提出了一种自适应波束形成方法，该方法通过获得自适应参考波束图，确定波束图恒定范围根据最小二乘算法求取其他频点权值，并进行宽带波束形成。该方法不仅能保证恒定柬宽，而且可实现自适应零陷控制。仿真实验证明了算法的有效性。
寬帶波束形成是相控陣雷達數字信號處理的難點。針對目前寬帶波束形成隻能滿足單一恆定束寬或自適應情況，為兼具兩種優勢使雷達工作狀態更佳，文中基于最小二乘算法提齣瞭一種自適應波束形成方法，該方法通過穫得自適應參攷波束圖，確定波束圖恆定範圍根據最小二乘算法求取其他頻點權值，併進行寬帶波束形成。該方法不僅能保證恆定柬寬，而且可實現自適應零陷控製。倣真實驗證明瞭算法的有效性。
관대파속형성시상공진뢰체수자신호처리적난점。침대목전관대파속형성지능만족단일항정속관혹자괄응정황，위겸구량충우세사뢰체공작상태경가，문중기우최소이승산법제출료일충자괄응파속형성방법，해방법통과획득자괄응삼고파속도，학정파속도항정범위근거최소이승산법구취기타빈점권치，병진행관대파속형성。해방법불부능보증항정간관，이차가실현자괄응령함공제。방진실험증명료산법적유효성。
Wideband beam forming is a difficult problem for phased array radar digital signal processing. The present wideband beam forming methods only satisfy one advantage of constant beam width or adaptive. For the radar to incorporate both advantages, this paper presents a wideband adaptive beam forming method based on the RLS algo- rithm. Firstly, an adaptive reference beam pattern is obtained, then the constant beam pattern range is determined and other frequency weights is worker out by RLS algorithm, and finally wideband beam forming can be obtained. This method can not only ensure constant beam width, but also realize adaptive null control. The validity is investi- gated through a series of simulations.
