Sparse optical synthetic aperture imaging device based on three apertures and light beam combination correction method of device

Abstract

The invention discloses a sparse optical synthetic aperture imaging device based on three apertures and a light beam combination correction method of the device. The device and the method can be used for remarkably improving the imaging resolving power of a target and effectively weakening the influence of transmission media such as atmosphere and optical systems. The device mainly comprises a telescope sub-array, an optical distance precision adjustment system, an oblique error correction unit, an imaging light sub-beam combination and imaging system and the like. After light waves reflected or scattered by the target are respectively acquired by the telescope sub-array, three imaging light waves share a phase by the aid of the optical distance precision adjustment system and the oblique error correction unit, and finally, high-resolution synthetic aperture imaging for the target is realized by the imaging light sub-beam combination and imaging system. The device has the advantages of simple and compact structure, small size, light weight, high environmental adaptability, capability of simultaneously ensuring optical distance precision adjustment range and adjustment accuracy and the like.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a three-aperture-based sparse optical synthetic aperture imaging device and a beam combination correction method thereof. Background technique [0002] With the continuous development and progress of science and technology, higher and higher resolutions are required in many fields such as ground imaging, military reconnaissance, astronomical observation and deep space exploration. For the single-aperture optical system commonly used at present, in order to improve the spatial resolution, it is necessary to increase the system caliber, but the increase of the system caliber is limited by many factors such as materials, processes, manufacturing costs, quality, and payload compartment volume. It will inevitably lead to an increase in the volume and quality of the system, which will bring difficulties to the launch of space-based and space-based systems. The synthetic a...

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Problems solved by technology

For the single-aperture optical system commonly used at present, in order to improve the spatial resolution, it is necessary to increase the system caliber, but the increase of the system caliber is limited by many factors such as mat...

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