Matches in SemOpenAlex for { <https://semopenalex.org/work/W3136891008> ?p ?o ?g. }
- W3136891008 abstract "This paper investigates regularized estimation of Kronecker-structured covariance matrices (CM) for complex elliptically symmetric (CES) data. To obtain a well-conditioned estimate of the CM, we add penalty terms of Kullback-Leibler divergence to the negative log-likelihood function of the associated complex angular Gaussian (CAG) distribution. This is shown to be equivalent to regularizing Tyler's fixed-point equations by shrinkage. A sufficient condition that the solution exists is discussed. An iterative algorithm is applied to solve the resulting fixed-point iterations and its convergence is proved. In order to solve the critical problem of tuning the shrinkage factors, we then introduce three methods by exploiting oracle approximating shrinkage (OAS) and cross-validation (CV). The proposed algorithms are applied to the CM estimation for polarization-space-time adaptive processing (PSTAP) in the context of heterogeneous clutter, where the clutter can be modeled using CES distributions with a Kronecker product-structured CM. When the training samples are limited, the proposed estimator, referred to as the robust shrinkage Kronecker estimator (RSKE), has better performance compared with several existing methods. Simulations are conducted for validating the proposed estimator and demonstrating its high performance." @default.
- W3136891008 created "2021-03-29" @default.
- W3136891008 creator A5027835055 @default.
- W3136891008 creator A5036533907 @default.
- W3136891008 creator A5048788950 @default.
- W3136891008 creator A5059212645 @default.
- W3136891008 creator A5081132497 @default.
- W3136891008 creator A5086321095 @default.
- W3136891008 date "2021-03-17" @default.
- W3136891008 modified "2023-09-24" @default.
- W3136891008 title "Regularized Estimation of Kronecker-Structured Covariance Matrix With Applications to Polarization Space-Time Adaptive Processing" @default.
- W3136891008 cites W1577058430 @default.
- W3136891008 cites W1965928820 @default.
- W3136891008 cites W1972206072 @default.
- W3136891008 cites W1974640819 @default.
- W3136891008 cites W1976261516 @default.
- W3136891008 cites W1979573625 @default.
- W3136891008 cites W1980829756 @default.
- W3136891008 cites W1986362571 @default.
- W3136891008 cites W1986921156 @default.
- W3136891008 cites W1990454509 @default.
- W3136891008 cites W1992511687 @default.
- W3136891008 cites W1995295300 @default.
- W3136891008 cites W2008418230 @default.
- W3136891008 cites W2013438974 @default.
- W3136891008 cites W2014509644 @default.
- W3136891008 cites W2014937354 @default.
- W3136891008 cites W2020577112 @default.
- W3136891008 cites W2028568336 @default.
- W3136891008 cites W2031374578 @default.
- W3136891008 cites W2034646922 @default.
- W3136891008 cites W2035568543 @default.
- W3136891008 cites W2046033161 @default.
- W3136891008 cites W2050798338 @default.
- W3136891008 cites W2051108596 @default.
- W3136891008 cites W2059773800 @default.
- W3136891008 cites W2066620825 @default.
- W3136891008 cites W2072184935 @default.
- W3136891008 cites W2077813311 @default.
- W3136891008 cites W2097977627 @default.
- W3136891008 cites W2098239165 @default.
- W3136891008 cites W2108400150 @default.
- W3136891008 cites W2108458053 @default.
- W3136891008 cites W2109018101 @default.
- W3136891008 cites W2117454350 @default.
- W3136891008 cites W2119456443 @default.
- W3136891008 cites W2119963163 @default.
- W3136891008 cites W2121367139 @default.
- W3136891008 cites W2122780641 @default.
- W3136891008 cites W2124759694 @default.
- W3136891008 cites W2126568557 @default.
- W3136891008 cites W2128219324 @default.
- W3136891008 cites W2136809053 @default.
- W3136891008 cites W2140612892 @default.
- W3136891008 cites W2140775152 @default.
- W3136891008 cites W2148982591 @default.
- W3136891008 cites W2149414429 @default.
- W3136891008 cites W2150678643 @default.
- W3136891008 cites W2161393155 @default.
- W3136891008 cites W2161503240 @default.
- W3136891008 cites W2165408259 @default.
- W3136891008 cites W2168703653 @default.
- W3136891008 cites W2176806231 @default.
- W3136891008 cites W2246214216 @default.
- W3136891008 cites W2259656359 @default.
- W3136891008 cites W2316642606 @default.
- W3136891008 cites W2330886135 @default.
- W3136891008 cites W2507785010 @default.
- W3136891008 cites W2508393166 @default.
- W3136891008 cites W2540953569 @default.
- W3136891008 cites W2625540613 @default.
- W3136891008 cites W2788967965 @default.
- W3136891008 cites W2791698794 @default.
- W3136891008 cites W2810112624 @default.
- W3136891008 cites W2913717565 @default.
- W3136891008 cites W2953465656 @default.
- W3136891008 cites W2967294645 @default.
- W3136891008 cites W2990027351 @default.
- W3136891008 cites W3014778616 @default.
- W3136891008 cites W3015027386 @default.
- W3136891008 cites W3017355820 @default.
- W3136891008 cites W3094125978 @default.
- W3136891008 cites W3101788651 @default.
- W3136891008 cites W3104887532 @default.
- W3136891008 hasPublicationYear "2021" @default.
- W3136891008 type Work @default.
- W3136891008 sameAs 3136891008 @default.
- W3136891008 citedByCount "0" @default.
- W3136891008 crossrefType "posted-content" @default.
- W3136891008 hasAuthorship W3136891008A5027835055 @default.
- W3136891008 hasAuthorship W3136891008A5036533907 @default.
- W3136891008 hasAuthorship W3136891008A5048788950 @default.
- W3136891008 hasAuthorship W3136891008A5059212645 @default.
- W3136891008 hasAuthorship W3136891008A5081132497 @default.
- W3136891008 hasAuthorship W3136891008A5086321095 @default.
- W3136891008 hasConcept C105795698 @default.
- W3136891008 hasConcept C11413529 @default.
- W3136891008 hasConcept C121332964 @default.
- W3136891008 hasConcept C126255220 @default.
- W3136891008 hasConcept C132094186 @default.