MUSIC, CBF and Differential Algebraic Constant Modulus Algorithms for Direction of Arrival Estimation in Passive Coherent Locators

Authors : Ahmet ÖZÇETİN

Pages : 95-116

View : 15 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In passive coherent locators insert ignore into journalissuearticles values(PCL); systems, noise and the precision of direction of arrival insert ignore into journalissuearticles values(DOA); estimation are key issues. This paper addresses the implementation of high-resolution DOA estimation methods, in particular the multiple signal classification insert ignore into journalissuearticles values(MUSIC); algorithm, the conventional beam forming insert ignore into journalissuearticles values(CBF); algorithm, and the algebraic constant modulus algorithm insert ignore into journalissuearticles values(ACMA);. The goal is to compare the ACMA to the MUSIC and CBF algorithms for application to PCL. The results and analysis presented here support the use of constant modulus information, where available, as an important addition to DOA estimation. The ACMA offers many simple solutions to noise and separation related problems; at low signal-to-noise ratio levels, it provides much more accurate estimates and yields reasonable separation performance even in the presence of challenging signals. Differential ACMA, which allows the simple digital removal of the direct signal component from the output of a sensor array, is also introduced.
Keywords : Passive Radar, Direction of Arrival DOA, Passive Coherent Locators PCL, Blind Source Separation, Array Antenna, Conventional Beamforming insert ignore into j