射频特征对MUSIC算法的影响分析  

Influence of RF Characteristics on MUSIC Algorithm

作　　者：程亚娇 刘晨东[1] 沈志博[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《电子科技》2015年第1期136-139,共4页Electronic Science and Technology

摘　　要：分析了MUSIC算法测向的基本原理,分别针对辐射源的频率、信号持续时间以及信噪比3种射频特征,通过理论推导分析了其对MUSIC算法测向性能的影响,频率影响波长进而影响测向结果的估计精度,甚至会产生虚假谱峰,信号持续时间和信噪比在一定范围内与测向估计精度成正比,并对该结论进行了仿真验证。This paper analyzes the basic principle of the MUSIC algorithm, and according to the three charac-teristics of the RF radiation source of the frequency, the duration of signal and the signal to noise ratio, their influ-ence on the properties of MUSIC algorithm is analyzed through theoretical derivation, by influencing the wavelength,the frequency then influences the estimation precision of direction finding results, which even produces false spectralpeak. It is verified by simulation that signal duration and Signal-to-Noise Ratio within a certain range is proportionalto the direction finding estimation precision with which it is simulated.

关 键 词：MUSIC算法 射频特征 测向性能 

分 类 号：TN911.7[电子电信—通信与信息系统]