Path planning method for short-time aperture synthesis of distributed radar

Abstract

The invention discloses a path planning method for short-time aperture synthesis of a distributed radar. The method comprises the following steps: S1, establishing a geometric model and an echo modelof the distributed radar; S2, establishing a path planning model of the distributed radar, and establishing an optimization objective; and S3, solving the optimization objective by an optimization method based on a greedy algorithm. The optimal path planning problem is established as a multi-objective optimization problem under a multi-constraint condition by analyzing the constraint relationshipin a distributed radar flight and imaging model, the objective function of each point is calculated by using the greedy algorithm, the optimal flight path is selected for the short-time synthetic aperture of the distributed radar, and the short-time high-resolution imaging effect of the distributed radar is effectively ensured.

Description

technical field

[0001] The invention belongs to the technical field of distributed radar detection and imaging, and in particular relates to a path planning method for short-time aperture synthesis of distributed radar. Background technique

[0002] Spotlight synthetic aperture radar obtains high-resolution imaging results by continuously illuminating a fixed target area within a certain period of time. The radar imaging system has high flexibility and operability, and can realize low-cost monitoring of environmental resources and natural disasters. The traditional monostatic synthetic aperture radar forms a virtual large aperture through the movement of the platform, and obtains a high-resolution two-dimensional image after processing the radar echo. Although it can realize high-resolution imaging of side view and oblique front view, it has a certain blind area in the front view area, which limits its application range. Distributed radar can not only solve the problem of ...

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