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

fYear

2001

fDate

2001

Firstpage

843

Lastpage

846

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar, 2001 CIE International Conference on, Proceedings

Conference_Location

Beijing

Print_ISBN

0-7803-7000-7

Type

conf

DOI

10.1109/ICR.2001.984843

Filename

984843