Title :
Calculation of moments of complex Wishart and complex inverse Wishart distributed matrices
Author :
Maiwald, D. ; Kraus, D.
Author_Institution :
Naval Syst. Div., STN ATLAS Elektronik GmbH, Bremen, Germany
fDate :
8/1/2000 12:00:00 AM
Abstract :
The calculation of moments of complex Wishart and complex inverse Wishart distributed random matrices is addressed. In applications such as radar, sonar or seismics, complex Wishart and complex inverse Wishart distributed random matrices are used to model the statistical properties of complex sample covariance matrices and complex inverse sample covariance matrices. respectively. Moments of these random matrices are often needed, for example, in studies of the asymptotic properties of parameter estimates. A derivation of the probability density function of complex inverse Wishart distributed random matrices is given. Furthermore, strategies are outlined for the calculation of the moments of both complex Wishart and complex inverse Wishart distributed matrices
Keywords :
array signal processing; covariance matrices; parameter estimation; asymptotic properties; complex Wishart distributed matrices; complex inverse Wishart distributed matrices; complex inverse sample covariance matrices; complex sample covariance matrices; moments; parameter estimates; probability density function; radar; random matrices; seismics; sonar; statistical properties;
Journal_Title :
Radar, Sonar and Navigation, IEE Proceedings -
DOI :
10.1049/ip-rsn:20000493