Mimo-isar 3D imaging method based on md-admm
A MIMO-ISAR and MD-ADMM technology, applied in the field of three-dimensional imaging of multiple-input multiple-output inverse synthetic aperture radar imaging, can solve the problems of large storage and calculation consumption, poor robustness, etc., to improve calculation efficiency and robustness, Effect of reducing storage and computation burden
Active Publication Date: 2021-09-07
NAT UNIV OF DEFENSE TECH
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[0006] The idea of the present invention is to solve the problem that under the condition of MIMO-ISAR multi-dimensional sparse data, the traditional compressed sensing method consumes a lot of storage and calculation, and the known multi-dimensional sparse recovery method has poor robustness, and proposes a MIMO-ISAR based on MD-ADMM ISAR 3D Imaging Method
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[0064] The present invention will be further described below in conjunction with accompanying drawing:
[0065] figure 1 It is the processing flow of the present invention. A kind of MIMO-ISAR three-dimensional imaging method based on multidimensional ADMM described in the present invention comprises the following steps:
[0066] S1 models the echoes of MIMO-ISAR moving targets;
[0067] S2 models the MIMO-ISAR 3D sparse imaging problem;
[0068] S3 MD-ADMM based MIMO-ISAR 3D image sparse reconstruction.
[0069] figure 2 for S1 and θ w Corner diagram.
[0070] image 3 (a) is the three-dimensional scatter diagram of the simulated aircraft target, image 3 (b)(c)(d) are the three views of the simulated aircraft target under the condition of full aperture. The aircraft flies perpendicular to the MIMO linear array with 10 transmissions and 6 receptions at a speed of v=200m / s. The radar transmission signal parameters are as follows: the center frequency is 10GHz, the...
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The invention belongs to the field of radar imaging, and specifically relates to a MIMO-ISAR three-dimensional imaging method based on MD-ADMM, comprising the following steps: S1 modeling the echo of a MIMO-ISAR moving target; S2 performing a three-dimensional sparse imaging problem on the MIMO-ISAR Modeling; S3 MD-ADMM-based sparse reconstruction of MIMO-ISAR 3D images. The beneficial effects obtained by the present invention are: through the present invention, the three-dimensional sparse imaging of MIMO-ISAR can be realized, and under the condition of three-dimensional sparse data, the storage and calculation burden can be effectively reduced, the calculation efficiency and robustness of the three-dimensional imaging can be improved, and a good focus can be obtained The three-dimensional image of the target has important engineering application value for target radar imaging, feature extraction and target recognition under the condition of multi-dimensional data limitation.
Description
technical field [0001] The invention belongs to the field of radar imaging, in particular to a multiple-input multiple-output inverse synthetic aperture radar imaging (Multiple-Input-Multiple-Output Radar InverseSynthetic) based on a multidimensional alternating direction multiplier method (Multidimentional Alternating Direction Method of Multipliers, MD-ADMM). Aperture Radar, MIMO-ISAR) three-dimensional imaging method. Background technique [0002] Inverse Synthetic Aperture Radar (Inverse Synthetic Aperture Radar, ISAR) can generate a two-dimensional image of the target, which is usually used for target recognition and classification. Compared with two-dimensional images, three-dimensional images can obtain more target information, which is more conducive to target recognition. [0003] MIMO-ISAR imaging technology refers to the processing of multi-channel echo data within a limited imaging time, replacing spatial sampling with time sampling to improve image resolution. ...
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IPC IPC(8): G01S13/90
Inventor 张双辉邓理康黎湘刘永祥张新禹霍凯姜卫东
Owner NAT UNIV OF DEFENSE TECH