Title :
Angle estimation in the presence of mainbeam interference with the differential EMVDR
Author :
Xie, Junhao ; Yuan, Yeshu ; Liu, Yongtan
Author_Institution :
Dept. of Electron. & Commun. Eng., Harbin Inst. of Technol., China
Abstract :
The extended minimum variance distortionless response (EMVDR) spatial spectrum estimator is presented. MVDR and the thermal noise algorithm (TNA) can be regarded as the special cases of it. The EMVDR spectrum has, theoretically, infinite superresolution capability with increasing the power of the array covariance matrix in the white noise background; this is verified by calculations. Further, the differential EMVDR for angle estimation in the presence of mainbeam interference is derived. Simulations show that it can resolve and accurately locate targets while remarkably suppressing interference in the main target beam
Keywords :
array signal processing; covariance matrices; direction-of-arrival estimation; interference (signal); signal resolution; spectral analysis; thermal noise; white noise; DOA estimation; array covariance matrix; differential extended MVDR; extended minimum variance distortionless response; interference suppression; mainbeam interference; spatial spectrum estimator; superresolution capability; target angle estimation; thermal noise algorithm; white noise background; Azimuth; Covariance matrix; Interference suppression; Sensor arrays; Shape; Signal resolution; Signal to noise ratio; Spatial resolution; White noise; Working environment noise;
Conference_Titel :
Radar, 2001 CIE International Conference on, Proceedings
Conference_Location :
Beijing
Print_ISBN :
0-7803-7000-7
DOI :
10.1109/ICR.2001.984843
