A spatially modulated interference spectroscopy imaging system and method capable of on-orbit focusing

A technology of interference spectral imaging and spatial modulation, applied in the field of spatial modulation interference spectral imaging system, can solve problems such as defocusing, achieve high control accuracy and reduce time error

Active Publication Date: 2018-08-28
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a spatially modulated interference spectrum imaging system and method capable of on-orbit focusing, which is used to solve technical problems such as defocusing of the spaceborne spectral imager in the background technology due to changes in the on-orbit environment

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  • A spatially modulated interference spectroscopy imaging system and method capable of on-orbit focusing
  • A spatially modulated interference spectroscopy imaging system and method capable of on-orbit focusing
  • A spatially modulated interference spectroscopy imaging system and method capable of on-orbit focusing

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0029] Such as Figure 1~2 As shown, the present invention provides a spatially modulated interference spectrum imaging system capable of focusing on orbit, including an on-board computer, a spatially modulated spectrometer and a focal plane assembly sequentially arranged along the optical path, and the focal plane assembly includes a focusing mechanism and a focal plane assembly. A surface circuit box and a built-in photodetector in the focal plane circuit box, and the focusing mechanism and the photodetector are respectively connected with the on-board computer.

[0030] The focusing mechanism includes a motor, a transmission pair, and a guide rail. The motor is connected to the focal plane circuit box through the transmission pair, and the focal plane circuit box can slide on the guide rail.

[0031] The transmission pair includes a ball scre...

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Abstract

The invention belongs to the field of optics, and particularly relates to an on-orbit focusing spatial modulation interference spectral imaging system and method. The system comprises an onboard computer, a spatial modulation spectrometer and a focal plane assembly, wherein the spatial modulation spectrometer and the focal plane assembly are arranged in turn along an optical path. The focal plane assembly comprises a focusing mechanism and a focal plane circuit box. A photoelectric detector is built in the focal plane circuit box. The focusing mechanism and the photoelectric detector are respectively connected with the onboard computer. According to the invention, the on-orbit real-time interference map data of an instrument are used as basic data for focusing control; star earth transmission links and the processing links of ground personnel are reduced; the current focusing control corresponds to the current instrument state; time errors are reduced; and the control precision is high.

Description

technical field [0001] The invention belongs to the field of optics, and in particular relates to a spatially modulated interference spectrum imaging system and method capable of on-track focusing. Background technique [0002] The structure of the spectral imager is complex, and the general carrying platforms are space vehicles such as satellites, spacecraft, and space stations. During the launch process and in-orbit operation of these vehicles, their external environment will undergo drastic changes, and they will be subject to shocks, vibrations, orbit changes, Environmental factors such as pressure changes and temperature changes will change the mechanical structure of the spectral imager or some parameters of the optical system, and will also affect the defocus of the spectral imager, resulting in a decline in the quality of the interferogram. The adjustment of the focal plane position and the compensation of the defocus amount. [0003] The current space-borne spectra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/45G01J3/28
CPCG01J3/2823G01J3/45
Inventor 李思远刘强张宏建武登山张周峰王天颖
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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