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

A path planning and aperture synthesis technology, applied in the direction of constraint-based CAD, using re-radiation, special data processing applications, etc., can solve problems such as not applicable to distributed radar imaging path planning, and only considering the flight path of a single UAV

Active Publication Date: 2020-12-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, it only considers the flight path of a single UAV for the star-mechanism

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

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Embodiment Construction

[0064] The invention proposes an intelligent optimal path planning method for distributed radar short-time aperture synthesis. The innovation of the present invention is to use multiple radars to jointly observe the earth, transform the path planning problem of short-time aperture synthesis of distributed radars into a multi-objective optimization problem under multi-constraint conditions, and solve the optimization problem to obtain the optimal path. Combination of apertures of multiple radar platforms within a certain period of time and improvement of imaging resolution.

[0065] The solution of the present invention is aimed at the requirement of short-term aperture synthesis of distributed radar, and constrains the flight performance and imaging conditions of the radar platform. The main constraints include the distance from the theoretical end point, terrain threat and radar aperture accumulation, etc. Set the corresponding weight. The optimal path planning problem is es...

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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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Application Information

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IPC IPC(8): G06F30/20G06F30/10G01S13/90G01S7/41G06F111/06G06F111/04
CPCG06F30/20G06F30/10G01S13/9094G01S13/90G01S7/418G06F2111/06G06F2111/04
Inventor 杨建宇黄钰林徐帆云张寅朱俊宇杨海光张永超霍伟博张永伟
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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