کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
561412 875302 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Statistical analysis of achievable resolution limit in the near field source localization context
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Statistical analysis of achievable resolution limit in the near field source localization context
چکیده انگلیسی

In this fast communication, we derive the statistical resolution limit (SRL), characterizing the minimal parameter separation, to resolve two closely spaced known near-field sources impinging on a linear array. Toward this goal, we conduct on the first-order Taylor expansion of the observation model a Generalized Likelihood Ratio Test (GLRT) based on a Constrained Maximum Likelihood Estimator (CMLE) of the SRL. More precisely, the minimum separation between two near-field sources, that is detectable for a given probability of false alarm and a given probability of detection, is derived herein. Finally, numerical simulations are done to quantify the impact of the array geometry of the signal sources power distribution and of the array aperture on the statistical resolution limit.


► We derive the statistical resolution limit to resolve two closely spaced known near-field sources.
► We conduct a generalized likelihood ratio test based on a constrained maximum likelihood estimator of the SRL.
► The minimum separation between two near-field sources, that is detectable for a given probability of false alarm and a given probability of detection, is derived herein.
► Numerical simulations are done to quantify the impact of the array geometry, the signal sources power distribution and of the array aperture on the SRL.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 92, Issue 2, February 2012, Pages 547–552
نویسندگان
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