Space optical camera having on-orbit self-diagnosis and compensation functions

Abstract

the invention discloses a space optical camera having on-orbit self-diagnosis and compensation functions, which belongs to the space optical obtaining field. The camera comprises a space camera optical system and a phase difference wavefront detection unit, wherein the space camera optical system is in the form of Cassegrain, coaxial three-mirror, off-axis three-mirror and the like optical systems; and the phase difference wavefront detection unit comprises a focal multistage spliced detector, an out-of-focus multistage spliced detector, a focal detector interface, an out-of-focus detector interface, a data acquisition module, a data preprocessing module, a computing module, a storage module and a control interface. The space optical camera having the on-orbit self-diagnosis and compensation functions is capable of reducing the requirements of a high-performance space optical system for design, structure, thermal control and the like without adding other extra high-precision wavefront measuring device, thereby realizing high-accuracy on-orbit diagnosis and compensation imaging of the space optical system.

Description

technical field [0001] The invention belongs to the field of space optics acquisition, in particular to a space optics camera with on-orbit self-diagnosis and compensation functions. Background technique [0002] Due to the shock, overload, vibration, thermal environment changes, microgravity environment and atmospheric turbulence of the space optical system during satellite launch, the wave front is distorted, resulting in the degradation of the imaging quality of the optical imaging system. Especially for space cameras with higher performance in the future, with the increase of system aperture and focal length, the corresponding requirements for light weight are getting higher and higher, and the position error of each mirror in orbit will further increase. If the traditional passive optical imaging without diagnostic and compensation functions continues to be used, the gap between the design resolution and the imaging resolution will be further increased. [0003] The ex...

AI Technical Summary

Problems solved by technology

[0002] Due to the shock, overload, vibration, thermal environment changes, microgravity environment and atmospheric turbulence of the space optical system during satellite launch, the wavefront is distorted, resulting in a decrease in the imaging quality of the optical imaging system

Especially for space cameras with higher performance in the future, with the increase of system caliber and focal length, the corresponding requirements for lightweight are getting higher and higher, and the in-orbit position error of each mirror will also further increase

If you continue to use traditional passive optical imaging without diagnostic and compensation functions, the gap between the design resolution and the imaging resolution will be further increased

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