Can the Threshold Performance of Maximum Likelihood DOA Estimation be Improved by Tools from Random Matrix Theory?

نویسندگان

  • Yuri I. Abramovich
  • Ben A. Johnson
چکیده

For direction of arrival (DOA) estimation in the threshold region, it has been shown that use of Random Matrix Theory (RMT) eigensubspace estimates provides significant improvement in MUSIC performance. Here we investigate whether these RMT methods can also improve the threshold performance of unconditional (stochastic) maximum likelihood DOA estimation (MLE).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Underwater Direction-of-Arrival Finding: Maximum Likelihood Estimation and Performance Analysis

OF THE DISSERTATION Underwater Direction-of-Arrival Finding: Maximum Likelihood Estimation and Performance Analysis by Tao Li Doctor of Philosophy in Electrical Engineering Washington University in St. Louis, May 2012 Research Advisor: Dr. Arye Nehorai In this dissertation, we consider the problems of direction-of-arrival (DOA) finding using acoustic sensor arrays in underwater scenarios, and d...

متن کامل

Alternative algorithm for maximum likelihood DOA estimation and detection - Radar, Sonar and Navigation, IEE Proceedings -

The majority of algorithms developed for the narrowband direction of arrival (DOA) estimation problem rely on an eigenvalue decomposition (EVD) to determine both the number of signals and their respective DOAs. An alternative algorithm is presented that solves both the DOA detection and estimation problems without resorting to an EVD. The algorithm is shown to have asymptotically equivalent per...

متن کامل

Positive-definite Toeplitz completion in DOA estimation for nonuniform linear antenna arrays. II. Partially augmentable arrays

This paper considers the problem of direction-ofarrival (DOA) estimation for multiple uncorrelated plane waves incident on so-called “fully augmentable” sparse linear arrays. In situations where a decision is made on the number of existing signal sources (m) prior to the estimation stage, we investigate the conditions under which DOA estimation accuracy is effective (in the maximum-likelihood s...

متن کامل

Improving the Performance of Bayesian Estimation Methods in Estimations of Shift Point and Comparison with MLE Approach

A Bayesian analysis is used to detect a change-point in a sequence of independent random variables from exponential distributions. In This paper, we try to estimate change point which occurs in any sequence of independent exponential observations. The Bayes estimators are derived for change point, the rate of exponential distribution before shift and the rate of exponential distribution after s...

متن کامل

Threshold Region Performance of Maximum Likelihood Doa Estimation for a Single Source

This paper presents a performance analysis of Maximum Likelihood (ML) Direction-Of-Arrival (DOA) estimation using sensor arrays for the case of a single source in white Gaussian noise. Particular attention is paid to the threshold effect that is common in nonlinear estimation. The paper presents approximations to the probability of outlier and Mean Square estimation Error (MSE) of the ML estima...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013