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A microwave staring correlation imaging method and system based on satellite formation

A technology of correlated imaging and microwave staring, applied in the field of remote sensing imaging

Active Publication Date: 2020-03-31
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0005] At present, the research on microwave staring correlation imaging is mainly concentrated on the ground platform or quasi-static floating balloon platform. There is no research on the application of staring correlation imaging to geostationary orbit satellites for staring observation of the earth. How to apply gaze correlation imaging to spaceborne Remote sensing imaging is still a problem to be solved

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  • A microwave staring correlation imaging method and system based on satellite formation
  • A microwave staring correlation imaging method and system based on satellite formation
  • A microwave staring correlation imaging method and system based on satellite formation

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] The embodiment of the present invention discloses a satellite formation-based microwave staring associated imaging method, which is applied to the satellite formation-based microwave staring associated imaging system proposed in the embodiment of the present invention. The system consists of a central main satellite and a set number of Accompanying satellites are formed; wherein, the set number of accompanying satellites are sparsely distributed around t...

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Abstract

The invention presents a microwave gaze correlated imaging method based on satellite formation, which is applied to a microwave gaze correlated imaging system based on satellite formation. The systemis composed of a central main satellite and a set number of accompanying satellites. The accompanying satellites are sparsely distributed around the central main satellite according to a set rule to constitute a random radiation source antenna array with a set aperture. The method includes the following steps: the accompanying satellites use self-generated dynamic and time-varying antenna patternsto synchronously radiate microwave random radiation fields to a target imaging area, and the microwave random radiation fields cover the target imaging area by means of beam overlapping; and the central main satellite receives scattered echo, and calculates an image of the target imaging area through a correlated imaging algorithm. By using the technical scheme, gaze correlated imaging can be applied to satellite-borne remote sensing imaging, and the imaging resolution can be ensured.

Description

technical field [0001] The invention relates to the technical field of remote sensing imaging, in particular to a satellite formation-based microwave staring correlation imaging method and system. Background technique [0002] Radar imaging technology is a leap in the history of radar development. It expands the original detection and ranging functions of radar, enabling radar to use the acquired electromagnetic scattering information to obtain panoramic radar images. [0003] As the main spaceborne microwave remote sensing technology at present, the synthetic aperture radar developed rapidly in the 1950s utilizes the relative motion between the carrier platform and the target, and can obtain the scattering distribution information of the target in the range-Doppler plane. High azimuth resolution. The angular resolution of traditional real-aperture radar staring imaging is determined by the actual antenna array aperture, wavelength, and imaging distance. Due to the high alt...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 郭圆月蒋峥王东进袁博夏瑞李泓旻王赵辉
Owner UNIV OF SCI & TECH OF CHINA
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