Coprıme Arrays Wıth Enhanced Degrees Of Freedom
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Date
2018
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info:eu-repo/semantics/openAccess
Abstract
Coprime array geometries provide robust performance for direction-of-arrival estimation problem with more sources thansensor elements. In previous works it is shown that K source directions can be resolved using only 2M N -1 sensorelements where K is less than or equal to MN for M and N are integer numbers. In this paper we introduce a new approach toenhance the degrees of freedom (DOF) from MN to 2MN by using the same number of sensor elements. The proposedmethod is based on computing the covariance matrix of the observation data multiple times. Hence more DOF can beobtained. The resulting cross terms corresponding to the coherent sources are modeled as interference in a sparse recoveryalgorithm which is solved effectively by an alternating minimization procedure. The theoretical analysis of the proposedmethod is provided and its superior performance is evaluated through numerical simulations.
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Keywords
Akustik, Astronomi ve Astrofizik, Balıkçılık, Biyoloji, Biyoloji Çeşitliliğinin Korunması, Çevre Bilimleri, Deniz ve Tatlı Su Biyolojisi, Ekoloji, Entomoloji, Farmakoloji ve Eczacılık, Fizik, Akışkanlar ve Plazma, Fizik, Atomik ve Moleküler Kimya, Fizik, Katı Hal, Fizik, Matematik, Fizik, Nükleer, Fizikokimya, Fizik, Partiküller ve Alanlar, Fizik, Uygulamalı, Genetik ve Kalıtım, İstatistik ve Olasılık, Kimya, Analitik, Kimya, İnorganik ve Nükleer, Kimya, Organik, Kimya, Tıbbi, Kimya, Uygulamalı, Kuş Bilimi, Limnoloji, Mantar Bilimi, Matematik, Mikroskopi, Mineraloji, Optik, Spektroskopi, Su Kaynakları, Taşınım, Termodinamik, Toksikoloji, Zooloji
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Volume
19
Issue
2
