A two-beam method for achieving angular superresolution in radar and remote sensing

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Abstract

A new method of digital signal processing of angle measuring systems based on digital antenna arrays is justified. It allows you to improve the image quality of one- and two-dimensional objects. The method can be applied in the optical, infrared, and terahertz ranges of electromagnetic wavelengths. In the process of numerical experiments, the effectiveness of the proposed method is compared with the known ones. The results of experiments on mathematical models are presented and discussed.

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About the authors

B. A. Lagovsky

MIREA — Russian University of Technology

Email: absamokhin@yandex.ru
Russian Federation, ave. Vernadsky, 78, Moscow,119454

A. B. Samokhin

MIREA — Russian University of Technology

Author for correspondence.
Email: absamokhin@yandex.ru
Russian Federation, ave. Vernadsky, 78, Moscow,119454

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2. Fig. 1. Dependence of normalized values ​​of condition numbers on the number of resolved points using: 1 – Rademacher functions, 2 – eigenfunctions of the UI kernel, 3 – Walsh functions; 4 – two-ray method with integral processing (10).

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3. Fig. 2. Signal source (1) and its super-resolution images using single-beam (2) and dual-beam (3) methods.

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4. Fig. 3. Point sources of signals at a distance of 0.25θ0.5 (1), their images obtained by single-beam (2) and dual-beam (3) methods.

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5. Fig. 4. High-resolution source image: signal sources at a distance of 0.09θ0.5 (1), images based on single-beam (2) and dual-beam (3) methods.

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6. Fig. 5. Signal sources (1) and their images at a high noise level, found using single-beam (2) and dual-beam (3) methods.

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