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Synthetic aperture radar wide-range scanning realization method and device

A technology of synthetic aperture radar and its implementation method, which is applied in the directions of measurement device, radio wave reflection/re-radiation, and utilization of re-radiation, etc. It can solve the problems of wide-field imaging resolution decline, reduce calculation and transmission time, and ensure real-time permanent, easy-to-achieve effects

Pending Publication Date: 2021-06-04
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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Problems solved by technology

[0006] The technical problem to be solved by the present invention lies in the problems such as the decrease of resolution caused by wide-format imaging, and provides a method and device working structure and main realization method of synthetic aperture radar wide-format scanning imaging, so as to greatly improve the synthetic aperture radar width. Comprehensive Detection Performance of Scanning Imaging Radar

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  • Synthetic aperture radar wide-range scanning realization method and device
  • Synthetic aperture radar wide-range scanning realization method and device
  • Synthetic aperture radar wide-range scanning realization method and device

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] This embodiment provides a synthetic aperture radar wide imaging implementation method, such as figure 1 shown, including the following steps:

[0034] Step 1. Calculate the beam control codes of different pitch points in advance according to the system width requirements, and pre-load them to the mission controller in the form of configuration files; specifically:

[00...

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Abstract

The invention provides a synthetic aperture radar wide-range imaging realization method and device. The method comprises the following steps of adjusting pointing directions of a plurality of pitching beams based on inter-pulse switching, receiving echo signals pointed by different pitching beams, and acquiring radar echo signals in different distance intervals, performing imaging processing on the radar echo signals in the different distance intervals to obtain images in the different distance intervals, and carrying out splicing processing on the image data in different distance intervals to obtain a large-breadth radar image. While the wide image can be obtained, the imaging resolution is ensured, and the problem that the resolution is reduced during wide imaging of the earth synthetic aperture radar is solved.

Description

technical field [0001] The invention relates to the technical field of airborne / spaceborne synthetic aperture radar, in particular to a method and device for wide-scanning imaging of phased array synthetic aperture radar. Background technique [0002] Beam Scanning Synthetic Aperture Radar (Scan SAR) can not only change its observation angle in a wide angle range, but also greatly expand its observation bandwidth when it passes through the observation area at one time. This is very important for improving imaging effects and observing large-scale surface phenomena with rapid changes, such as the determination of soil moisture, crop growth changes, monitoring of flood disasters and large-scale ocean phenomena, and shortening the repeated observation period of global coverage. important. [0003] In ScanSAR, the coverage areas of several different wave positions of the antenna are combined in an appropriate way, so as to obtain an expanded combined observation bandwidth. It ...

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S13/90
Inventor 刘浩吕杨唐黎江钱小东郭静超陈雨薇曾巧谢文海
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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