Title :
Performance analysis of MVDR algorithm in the presence of amplitude and phase errors
Author :
Su, Weimiu ; Gu, Hong ; Ni, JinLin ; Liu, GuoSui
Author_Institution :
Nanjing Univ. of Sci. & Technol., China
Abstract :
The sensitivity of a spectrum estimation approach, the minimum variance distortionless response spectrum estimator, to random perturbations in the amplitude and phase of array sensors and channels is studied. Analytical expressions for the mean and variance of the spatial spectrum are derived. The effects of the amplitude error on the spectrum is greater relatively than that of the phase error. Theoretical results are validated by computer simulation. These expressions are then used to study the characteristics of the estimator
Keywords :
array signal processing; covariance matrices; parameter estimation; space-time adaptive processing; spatial filters; spectral analysis; MVDR algorithm; adaptive beamforming; amplitude error; array sensors; array signal covariance matrix; minimum variance distortionless response; phase error; random perturbations; spatial filter; spatial spectrum; spectrum estimation; Amplitude estimation; Analysis of variance; Computer errors; Computer simulation; Performance analysis; Phase distortion; Phase estimation; Phased arrays; Sensor arrays; Spectral analysis;
Conference_Titel :
Radar, 2001 CIE International Conference on, Proceedings
Conference_Location :
Beijing
Print_ISBN :
0-7803-7000-7
DOI :
10.1109/ICR.2001.984833
