Reduction of Cramer-Rao Bound in Arbitrary Pre-designed Arrays Using Altering an Element Position
Publish place: Journal of Computer and Robotics، Vol: 3، Issue: 2
Publish Year: 1388
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JCR-3-2_004
تاریخ نمایه سازی: 23 دی 1396
Abstract:
Simultaneous estimation of the range and the angle of close emitters usually requires a multidimensional search. This paper proposes an algorithm to improve the position of an element for arrays designed on the basis of some certain or random rules. In the proposed method, one element moves along the same previous direction, maintaining its vertical distance from each source, to reach a constellation with less Cramer-Rao Bound (CRB). The efficiency of this method has been demonstrated through simulation and a comparative study has been conducted, contrasting both the CRB and the determinant of the received signal’s covariance matrix before and after applying our proposed scheme.
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Authors
Hamidreza Bakhshi
Department of Electrical engineering, Shahed University, Tehran, Iran
Mohsen Abedini
Department of Electrical engineering, Shahed University, Tehran, Iran