Sparse aperture ISAR (Inverse Synthetic Aperture Radar) imaging phase self-focusing method based on image quality guidance
A sparse aperture, image quality technology, applied in measurement devices, radio wave measurement systems, reflection/re-radiation of radio waves, etc., can solve problems such as increased information loss, partial unavailability of echo data, and no effective means.
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[0061] The present invention will be further explained below in conjunction with the drawings:
[0062] figure 1 This is the total processing flow of the present invention.
[0063] The sparse aperture ISAR imaging phase self-focusing method based on image quality guidance of the present invention includes the following steps:
[0064] S1: Construct a sparse aperture phase autofocus model based on compressed sensing;
[0065] S2: Select the target distance unit participating in phase compensation parameter estimation;
[0066] S3: Set the initial parameter value of the iterative algorithm;
[0067] S4: Single-round phase error estimation and compensation;
[0068] S5: Iteration termination condition judgment;
[0069] S6: Update the phase autofocus and reconstruct the ISAR image.
[0070] The following simulation data is used to verify the beneficial effects of the present invention.
[0071] The radar signal type used in the simulation experiment is LFM signal, and the radar simulation par...
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