Improved Fast DOA Estimation Based on Propagator Method
Direction of arrival (DOA) estimation by array is an important research branch in the field of modern signal processing. It has a great variety of applications in many fields, such as communications, radar and sonar, etc. This document focuses on fast subspace calculation for the data received by array, because the implementation of subspace methods in detection application with real-time operation usually experiences a bottleneck in the calculation of the signal or noise subspace. A new concept ‘propagator’ for array signal processing is recently introduced, the properties of which have been proven useful for DOA estimation. This attractive concept is the propagator which can easily be extracted from the cross spectral matrix of the received signals for DOA estimation without Eigen-decomposition. Based on Propagator Method (PM), 2D fast algorithms of DOA parameter estimation have designed on L-shape of array structure. This array structure decrease the computation load, meanwhile its detection accuracy becomes less than that of MUSIC or ESPRIT. In this paper we proposed two improved DOA estimation based on PM for Lshape array. One brings more accuracy without increasing computation complex, and another has faster speed of signal processing. The simulation shows effectiveness and high resolution of proposed methods
Lutao Liu Qingbo Ji Yilin Jiang
Harbin Engineering University, Harbin
国际会议
2011亚太信号与信息处理协会年度峰会(APSIPAASC 2011)
西安
英文
1-5
2011-10-18（万方平台首次上网日期，不代表论文的发表时间）