Spatial heterodyne interference imaging method based on coded aperture

Abstract

The invention discloses a spatial heterodyne interference imaging method based on a coded aperture, and the spatial heterodyne interference imaging method based on the coded aperture comprises the steps: A1, enabling an interference imaging platform to drive an imaging system to move relative to a scene; a2, sequentially passing through a front lens, a collimating lens, a grating, imaging mirrors, a coding template, an imaging lens and a detector; a3, the interference spectrum data cube of the scenery passes through the imaging mirror L2 and then enters the coding template for modulation, and the coding template traverses an interference pattern line by line; and A4, the coded interference pattern passes through the imaging mirror L3 and then passes through the detector to obtain coded interference data. No moving part is arranged in the interference imaging platform, a push-broom interference imaging system is formed, the characteristics of high throughput and high signal-to-noise ratio of the coded aperture are reserved, and the stability and the reliability of a spatial heterodyne interference imager are improved. An efficient and high-quality imaging mode is provided for imaging in the remote sensing field. The method can be widely applied to the field of remote sensing imaging.

Description

(1) Technical field [0001] The invention relates to the technical field of spatial heterodyne imaging spectrometers, in particular to a spatial heterodyne interference imaging method and device based on coded apertures. (2) Background technology [0002] Coded aperture spectral imaging technology is a research hotspot in the field of spectral imaging technology in recent years. This technology enables the system to have high luminous flux and signal-to-noise ratio, so it has high application value and potential in many fields. [0003] The working process of the existing coded aperture spectral imager is as follows: the relative position between the coded aperture spectral imager and the target remains unchanged, the target light converges to the primary mirror after passing through the front mirror, and the position of the primary image plane coincides with the plane of the coded template , the primary image of the target is coded and modulated by the coding template, and t...

AI Technical Summary

Problems solved by technology

The existing coded aperture spectral imager will be affected by many external environments (such as vibration, etc.) in the remote sensing application process, and the moving parts will greatly reduce the stability and reliability of the joint.

[0007] Therefore, the current application fields of the existing coded aperture-based spatial heterodyne interferometric imaging technology are mainly ground and laboratory applications, and the application in the field of aerospace joysticks is almost blank.

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