(完整版)圆环阵列天线的自适应抗干扰技术

摘要

摘要

本文主要介绍了圆环阵列的自适应抗干扰技术，圆环阵列广泛应用于无线电测向、雷达、卫星导航、地下探测以及其他系统中，因为卫星导航系统要求有很强的抗干扰能力，所以当圆环阵列应用于卫星导航系统中时其自适应抗干扰的能力便十分重要。

本文从选题背景和圆环阵列入手，分析了圆环阵的特点，分析了圆环阵列天线所用到的基本理论。对自适应抗干扰的原理进行了系统的论述，对波达方向（DOA）经典算法（MUSIC算法）进行了研究和论述，全面阐述了各种自适应抗干扰优化的准则，对天线的自适应控制进行说明和阐述，确立了以(线性约束性最小方差)LCMV为准则的天线调零算法，并将这种算法应用于圆环阵列。最后借助MATLAB软件对LCMV算法和波达方向经典算法（MUSIC算法）进行了仿真，并对圆环阵列进行了优化，验证了算法的有效性。

关键词：圆环阵自适应零点抗干扰波达方向LCMV算法MUSIC算法

ABSTRACT

ABSTRACT

This article mainly introduced the circle array adaptive anti-interference techniques, circle array is widely used in radio ew, radar and satellite navigation, underground detection and other systems, because satellite navigation system requirements have strong anti-interference ability, so when circle array when applied to satellite navigation system of the adaptive anti-interference ability is crucial.

In this paper, the research background and the ring array, analyzes the characteristics of ring array, analysis of ring array antenna used in the basic theory. The principle of adaptive anti-jamming systems were discussed, on the direction of arrival (DOA) classical algorithm (MUSIC algorithm) were studied and discussed, a comprehensive exposition of the various criteria for optimal adaptive immunity, the adaptive antenna Control are explained and elaborated, established the (linearly constrained minimum variance) LCMV zero antenna as the standard algorithm, and this algorithm is applied to ring array. Finally, LCMV algorithm using MATLAB software and classic algorithms of DOA (MUSIC algorithm) were simulated, and the ring array is optimized to verify the validity of the algorithm.

Key words: circular array anti-jamming antenna array direction of arrival (DOA) LCMV algorithm MUSIC algorithm