Radar single target identification method and system and readable storage medium

Abstract

The invention provides a radar single-target identification method and system and a readable storage medium, and relates to the field of radar imaging. The method comprises the steps: carrying out radar observation from two opposite sides of a target; according to echo signals observed by the radars on the two sides, calculating to obtain frequency domain echoes S1 (f, theta) and Sr (f, theta) of end points on the two sides of the target respectively; according to the echo signala, calculating estimated endpoint coordinates p^1(x1, y1) and p^2(x2, y2) of endpoints on two sides of the target; according to the frequency domain echoes S1 (f, theta) and Sr (f, theta) of the endpoints on two sides of the target and the estimated endpoint coordinates p^1(x1, y1) and p^2(x2, y2) of the endpoints on two sides of the target, calculating echo envelopes M1 (f, eta) and Mr (f, eta) of the endpoints on two sides of the target; according to the echo envelopes M1 (f, eta) and Mr (f, eta) of the end points on the two sides of the target, obtaining estimated initial phases phi^l and phi^rof the end points on the two sides of the target; and determining the type of the target according to the estimated initial phasesphi^l and phi^r of the end points on the two sides of the target, wherein f represents the frequency value, theta represents the azimuth angle of the radar, and eta represents the slow time.

Description

【Technical field】 [0001] The invention relates to the technical field of radar imaging, in particular to a radar single target recognition method, system and readable storage medium. 【Background technique】 [0002] Distributed Synthetic Aperture Radar (hereinafter referred to as SAR) is an all-weather, all-weather high-resolution microwave remote sensing imaging radar, which uses the relative motion of the radar and the target to obtain the scattering characteristics of the target in azimuth and range. High-resolution radar images similar to optical photography are obtained through parameter inversion. Due to its high resolution, it can effectively identify camouflage and penetrate cover, and has unique advantages in applications in environmental monitoring, ocean observation, resource exploration, surveying and mapping, and military fields. [0003] However, the SAR image effect will be affected by many factors, such as platform motion trajectory, multipath, occlusion, ove...

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Problems solved by technology

[0003] However, the SAR image effect will be affected by many factors, such as platform motion trajectory, multipath, occlusion, overlapping, etc., the complete scattering azimuth map of the target cannot be obtained, and the echo loses part of the scattering characteristics of the target, resulting in SAR imaging The result does not reflect the geometry of the target

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