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Hyperspectrum detection system and method for point target

A point target, hyperspectral technology, applied in the field of hyperspectral detection systems, can solve the problems of small proportion and high spatial resolution.

Inactive Publication Date: 2019-05-03
SHANGHAI SATELLITE ENG INST
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  • Summary
  • Abstract
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Problems solved by technology

High-orbit satellites stand high and can see far, but due to the constraints of cameras and satellite scale, the spatial resolution cannot be very high, generally on the order of tens of meters
For small targets such as fighter jets, the proportion in a pixel is very small, showing typical point target and mixed pixel characteristics, and it is impossible to directly use traditional image recognition methods to detect point targets

Method used

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  • Hyperspectrum detection system and method for point target
  • Hyperspectrum detection system and method for point target
  • Hyperspectrum detection system and method for point target

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, the present invention provides a hyperspectral detection system for point targets, including:

[0024] The space-borne hyperspectral imager is used to perform hyperspectral imaging detection on areas containing point targets in the field of view, and send the acquired hyperspectral detection data containing targets to the mixed pixel unmixing device;

[0025] The mixed pixel unmixing device is used to extract the background spectrum from the hyperspectral detection data containing the target, unmix the mixed pixel containing the point target, and separate the target spectrum;

[0026] The target spectral feature extraction device is used to extract the spectral feature of the target according to ...

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Abstract

The invention provides a hyperspectrum detection system and method for a point target. A method based on mixed pixel spectrum demixing is adopted, a target spectrum is separated from the mixed pixel spectrum containing the point target, spectrum characteristics of the target are extracted and compared with spectrum characteristic samples in a target spectrum database for identification, and thereby hyperspectrum detection and identification of the point target are realized.

Description

technical field [0001] The invention relates to a hyperspectral detection system and method for point targets Background technique [0002] Hyperspectral imaging technology was developed in the 1980s. It obtains hundreds of continuous fine spectra in a wide spectral range while observing the geometric image of the target in space, and the spectral resolution can reach nm level. . Hyperspectral imaging collects the geometric, radiation and spectral information of the target at the same time, integrates the capabilities of the camera, radiometer and spectrometer to form an image cube, and can obtain the spectral characteristic curve of any pixel on the ground to realize the "fingerprint" recognition of the target. High-orbit satellites stand high and can see far, but due to the constraints of the camera and satellite scale, the spatial resolution cannot be very high, generally on the order of tens of meters. For small targets such as fighter jets, the proportion in a pixel i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28
Inventor 张波周爱明唐琪佳曹亮舒锐杜冬秦雷王廿菊李秀伟
Owner SHANGHAI SATELLITE ENG INST