电子信息对抗技术
電子信息對抗技術
전자신식대항기술
ELECTRONIC INFORMATION WARFARE TECHNOLOGY
2014年
5期
32-35,39
,共5页
阵列扩展%DOA估计%虚拟阵列%四阶矩
陣列擴展%DOA估計%虛擬陣列%四階矩
진렬확전%DOA고계%허의진렬%사계구
array extension%DOA estimation%virtual array%fourth-order moments
讨论了基于虚拟阵列扩展的DOA估计问题，对此问题传统阵列处理方法主要利用高阶累积量进行阵列扩展，计算量较大。在四阶矩基础上，通过扩大阵列孔径和自由度解决信源数目较阵元数多的DOA估计问题，利用特殊矩阵对扩展阵列的冗余信息进行剔除，降低了计算复杂度，提高了计算效率。仿真结果验证算法高效可靠，为工程实现提供了理论基础。
討論瞭基于虛擬陣列擴展的DOA估計問題，對此問題傳統陣列處理方法主要利用高階纍積量進行陣列擴展，計算量較大。在四階矩基礎上，通過擴大陣列孔徑和自由度解決信源數目較陣元數多的DOA估計問題，利用特殊矩陣對擴展陣列的冗餘信息進行剔除，降低瞭計算複雜度，提高瞭計算效率。倣真結果驗證算法高效可靠，為工程實現提供瞭理論基礎。
토론료기우허의진렬확전적DOA고계문제，대차문제전통진렬처리방법주요이용고계루적량진행진렬확전，계산량교대。재사계구기출상，통과확대진렬공경화자유도해결신원수목교진원수다적DOA고계문제，이용특수구진대확전진렬적용여신식진행척제，강저료계산복잡도，제고료계산효솔。방진결과험증산법고효가고，위공정실현제공료이론기출。
The Direction-of-Arrival ( DOA) estimation problem based on virtual array extension is analyzed. For this problem, higher order statistics technique for array extension is a main way for traditional array processing method with a large amount of calculation. The proposed method is based on the fourth-order moments for estimating DOA of more source signals than array ele-ments. Computational complexity is reduced and the computational efficiency is improved by the special matrix array for extension to eliminate redundant information. The simulation verifies the algorithm is efficient and reliable, and provides a theoretical basis for engineering implementa-tion.
