Genetic algorithm-based resource scheduling method for ISAR imaging

Abstract

The invention discloses a genetic algorithm-based resource scheduling method for inverse synthetic aperture radar ISAR imaging. The method mainly comprises the following steps of: 1, generating a scheduling sequence; 2, calculating an evaluation value; 3, updating the scheduling library; 4, calculating a fitness value; 5, encoding the scheduling sequence; 6, performing gene crossing on the code words; 7, performing gene variation on the code words; 7, decoding the gene sequence; And 8, performing cyclic operation on the steps to obtain a resource scheduling result. According to the invention,the genetic algorithm is used to update the scheduling library according to the evaluation value of the scheduling sequence, and the scheduling library obtains the resource scheduling result, so thatthe evaluation value of the resource scheduling result is more stable, and the scheduling success rate of the inverse synthetic aperture radar ISAR imaging task is improved.

Description

technical field [0001] The invention belongs to the technical field of image processing, and further relates to a genetic algorithm-based resource scheduling method for inverse synthetic aperture radar (ISAR) imaging in the technical field of imaging resource scheduling. In the case of multiple inverse synthetic aperture radar ISAR imaging targets in space, the invention alternately performs pulse transmission and reception on the selected targets, thereby making the resource allocation result of the inverse synthetic aperture radar ISAR more reasonable. Background technique [0002] In the case of multiple ISAR imaging tasks, due to limited radar resources, ISAR needs to reserve a large amount of radar resources for each imaging task, which will lead to a low success rate of imaging tasks. The ISAR imaging resource scheduling method converts continuous observations in slow time into random sparse observations under the theory of compressed sensing, and uses the sparse recon...

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Problems solved by technology

Although this method proposes an ISAR imaging resource scheduling method, there are still shortcomings in this method: since the imaging tasks are searched for the scheduling results that meet the constraint conditions in order according to the priority, a high priority of successful scheduling Imaging tasks may lead to subsequent scheduling failures of multiple low-priority imaging tasks, resulting in a lower task success rate and better scheduling results

Although this method proposes an ISAR imaging resource scheduling method, the disadvantages of this method are: because the ISAR imaging resource scheduling is only carried out sequentially according to a certain scheduling sequence, the ISAR imaging resources in the process of resource scheduling The pulse emission time of the task is randomly selected on the slow time grid, resulting in unstable evaluation values ​​of the set of successfully scheduled ISAR imaging tasks

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