DOA Analysis of Signal Based on Vanderpol Array

The smart antenna system using array antenna and array signal processing technique is extended from the traditional frequency domain, the array signal processing has been quite widely applied and developed. The wave phase error has a great influence on uniform linear array direction-of-arrival (DOA) estimation accuracy and resolution. We use the chaos (banderol) uniform linear array element to form the receiving array, the chaotic system is extreme sensitivity of the input signal phase delay. Simulation result show that the chaotic linear array has very good estimation precision, multipath interference can be effectively resisted, and the receiving system has good immunity to non-Gaussian color noise.