A block processing method for multi-band radar ultra-wideband joint imaging of complex targets

A technology for block processing and complex targets, which is applied in the field of block processing for multi-band radar ultra-wideband joint imaging of complex targets, and can solve problems such as model order limitations
CN108896993BActive Publication Date: 2022-02-08BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2022-02-08

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Abstract

The invention discloses a block processing method for complex target multi-band radar ultra-wideband combined imaging. The method first uses a filter-backprojection (FBP) algorithm to image the data for each radar band separately. Then in the image domain, the image of each band of the complex target is divided into blocks, and each image sub-block is transformed into the data domain by two-dimensional fast Fourier transform (2-DFFT); in the data domain, along the fan ring (or ring) to obtain the multi-band data corresponding to each image sub-block; the multi-band data of each image sub-block is fused using the existing technology based on the parametric model, and the ultra-wideband data of the sub-block can be obtained. Fusion data. Finally, the ultra-wideband fusion data of all sub-blocks are transformed into the image domain through the FBP algorithm, and all super-resolution image sub-blocks are spliced ​​in the order of blocks to obtain a complete super-resolution image of complex targets. This method is suitable for multi-band radar joint imaging under ultra-wideband conditions.
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Description

Technical field

[0001] The present invention relates to the field of thunder imaging processing, and more particularly to a block processing method of a complex target multi-band radar ultra-wideband combined imaging. Background technique

[0002] In actual target identification, the detection capacity of ultra-wideband radar signals has a lot of superiority, but it requires high costs, and even cannot be engineered. One way is to use the existing multi-radar to observe the target simultaneously on different bands. After the signal processing method, the multi-band observation signal is used to combine, synthesize the equivalent ultra-wideband signal, thereby increasing the distance resolution.

[0003] Piou et al. Proposed a data fusion method based on parameterized model in the PIOU JEA State-Space Technique for Ultrawide-Bandwidth Coherent Processing.mit Lincoln Laborative, Technical Report Tr1054, 1999, which implements the three ideal points. Broadband data fusion and joint ...

Claims

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