Rapid imaging method for vehicle-mounted synthetic aperture radar
A technology of synthetic aperture radar and imaging method, which is applied in the direction of instruments, measuring devices, and utilization of re-radiation, etc., can solve the problem of low calculation efficiency of echo data, and achieve the effect of avoiding repeated calculation of data, small amount of calculation, and short time consumption
Pending Publication Date: 2022-01-14
SHENZHEN UNIV
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[0004] The technical problem to be solved by the present invention is to provide a vehicle-mounted synthetic aperture radar fast imaging method aimed at solving the problem of low computational efficiency in imaging processing of echo data in the prior art in view of the above-mentioned defects of the prior art
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[0041] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0042] Please also see Figure 1-Figure 6 , the present invention provides some embodiments of a vehicle-mounted synthetic aperture radar fast imaging method.
[0043] Such as figure 1 Shown, a kind of vehicle-mounted synthetic aperture radar rapid imaging method of the present invention comprises the following steps:
[0044] Step S100, acquiring the echo data amount of the synthetic aperture radar and the speed value of the vehicle.
[0045] Specifically, the synthetic aperture radar is mounted on a vehicle, and the synthetic aperture radar also moves as the vehicle moves. The echo...
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The invention discloses a rapid imaging method for a vehicle-mounted synthetic aperture radar. The method comprises the following steps of acquiring an echo data volume of the synthetic aperture radar and a speed value of a vehicle, determining a sub-image sequence according to the speed value and the echo data volume, determining a sub-image set to be superposed according to the sub-image sequence, wherein the to-be-superposed sub-image set comprises at least one to-be-superposed sub-image subset, the to-be-superposed sub-image subset comprises all sub-images between a first sub-image in the sub-image sequence and a target sub-image in the sub-image sequence, and the arrangement sequence number of the target sub-image is greater than or equal to a preset image number, and performing coherence superposition on the sub-images in the to-be-superposed sub-image subset based on a preset image number to obtain each frame of synthetic aperture radar image. Firstly, sub-images with low resolution are obtained through echo data volume and speed value, and a synthetic aperture radar image with high resolution is obtained according to the sub-images. The complexity of an algorithm structure is reduced, the situation of repeated data calculation is avoided, the calculation amount is small, and consumed time is short.
Description
technical field [0001] The invention relates to the technical field of synthetic aperture radar, in particular to a fast imaging method for vehicle-mounted synthetic aperture radar. Background technique [0002] The Back Projection Algorithm (Back Projection Algorithm) is an algorithm for imaging processing of time-domain echo data, which can realize target reconstruction for echo data collected under any geometric configuration. The obvious disadvantage of the algorithm is that it needs to calculate the distance between the radar and all grid points in each azimuth, which leads to a relatively large amount of calculation data and redundancy, which leads to low calculation efficiency. [0003] Therefore, the prior art still needs to be improved and developed. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a vehicle-mounted synthetic aperture radar fast imaging method for the above-mentioned defects of the prior...
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Login to View More IPC IPC(8): G01S13/90G01S7/41
CPCG01S13/9021G01S7/411
Inventor 赵博梁承美黄磊蒯成玲吴剑旗江凯
Owner SHENZHEN UNIV