Title :
Threshold extension of the MUSIC algorithm
Author :
Zhao, Yuming ; Zhu, Zhaoda
Author_Institution :
Dept. of Electron. Eng., Nanjing Aeronaut. Inst., China
Abstract :
A noncoherent pulsed radar with a linear uniform array is assumed. An attempt is made to use reference noise samples to improve the performance of estimating the direction of targets. Three methods, MMUSIC, QMUSIC, and QQMUSIC, are presented for extending the threshold characteristics of the multiple signal characterization (MUSIC) algorithm. Computer simulation results show that about a 3-dB threshold extension over the MUSIC method can be obtained in the case of low SNR (signal-to-noise ratio) and a small number of snapshots against a background of white noise. The computational complexity required for these three methods over MUSIC is negligible
Keywords :
antenna arrays; computerised signal processing; digital simulation; estimation theory; radar theory; white noise; MMUSIC; MUSIC algorithm; QMUSIC; QQMUSIC; SNR; computational complexity; covariance matrix; digital simulation; direction of targets; linear uniform array; multiple signal characterization; noncoherent pulsed radar; reference noise; snapshots; threshold extension; white noise; Background noise; Computer simulation; Gaussian noise; Linear antenna arrays; Matrix decomposition; Multiple signal classification; Narrowband; Radar antennas; Signal processing; Working environment noise;
Conference_Titel :
Aerospace and Electronics Conference, 1991. NAECON 1991., Proceedings of the IEEE 1991 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-0085-8
DOI :
10.1109/NAECON.1991.165736
