Three-dimensional localization of near-field and strictly noncircular sources using steering vector decomposition

2022, Volume 23, Issue 4

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Frontiers of Information Technology & Electronic Engineering >> 2022, Volume 23, Issue 4 doi: 10.1631/FITEE.2100034

Three-dimensional localization of near-field and strictly noncircular sources using steering vector decomposition

Affiliation(s): College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing211106, China; Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space,Ministry of Industry and Information Technology, Nanjing211106, China; less

Received: 2021-01-19 Accepted: 2022-04-21 Available online: 2022-04-21

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Abstract

The three-dimensional problem for in with a is rarely studied. In this paper, we propose an algorithm with improved estimation performance. We decompose the multiple parameters of the steering vector in a specific order so that it can be converted into the products of several matrices, and each of the matrices includes only one parameter. On this basis, each parameter to be resolved can be estimated by performing a one-dimensional spatial spectral search. Although the computational complexity of the proposed algorithm is several times that of our previous algorithm, the estimation performance, including its error and resolution, with respect to the direction of arrival, is improved, and the range estimation performance can be maintained. The superiority of the proposed algorithm is verified by simulation results.

Keywords

Localization ; Centro-symmetric cross array ; Noncircular sources ; Near-field ; Steering vector decomposition

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