Method for acquiring spectral information of moving target in air by using satellite-borne interferometer
A technology for moving targets and spectral information, which is applied in the field of obtaining spectral information of moving targets in the air by using a spaceborne interferometer, and can solve the problem that the video and spectral information of moving targets cannot be obtained well.
Pending Publication Date: 2022-04-22
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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[0005] In order to solve the technical problem that the current large-aperture static interference spectrum imager can only continuously acquire hundreds of frames of continuous images, and cannot better acquire video and spectral information of moving targets, the present invention provides a space-borne interferometric The method of acquiring the spectrum information of moving target in the air by instrument
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[0045] 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 drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0046] In the regular use mode of LASIS, the push-broom speed is required to match the frame rate, and the scene in each frame moves one line on the detector. Continuous imaging of 256 frames. In order to realize simultaneous acquisition of moving target video and spectral information, the present invention proposes a LASIS imaging mode based on compensation scanning, and...
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The invention belongs to a method for acquiring spectral information of a moving target in the air, and aims to solve the problems that only hundreds of frames of continuous images can be continuously acquired and the video and spectral information of the moving target cannot be well acquired in the use mode of the conventional large-aperture static interference spectral imager. The invention provides a method for acquiring spectral information of an aerial moving target by using a satellite-borne interferometer, which comprises the following steps of: positioning the aerial moving target, controlling a satellite platform to perform reverse side sway to perform motion compensation push-broom imaging on the moving target, and acquiring an LASIS interference image sequence of the moving target; tracking the moving target in the LASIS interference image sequence of the moving target; extracting motion information of the moving target tracked in the step S2, and extracting interference information of the moving target through the motion information of the moving target; interference pattern information of the ground background is calculated; and S3, recovering spectrums of the moving target and the ground background by adopting an interference spectrum recovery method according to the interference information of the moving target obtained in the step S3 and the interference pattern information of the ground background obtained in the step S4.
Description
technical field [0001] The invention belongs to a method for acquiring spectral information of an air moving target, in particular to a method for acquiring the spectral information of an air moving target by using a space-borne interferometer. Background technique [0002] The Large Aperture Static Interferometric Spectral Imager (abbreviated as LASIS) is a mature space-borne hyperspectral imaging information acquisition device. Spectral information of ground features, this instrument has been applied to space-to-earth remote sensing satellites. [0003] In order to obtain the complete spectrum of the target, the target image is required to completely span the interferometric dimension direction of the detector during the imaging process. From the LASIS map with the image (in the form of figure 1 The interferogram (in the form of figure 2 shown), and further invert the spectral curve (in the form of image 3 shown). According to its imaging principle, LASIS continuousl...
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Login to View More IPC IPC(8): G06T7/246
CPCG06T7/248G06T2207/10016G06T2207/10036G06T2207/30241
Inventor 胡炳樑张耿李思远王爽王一豪姚舜丛强张永超
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI