Optical axis consistency calibration method for multi-optical axis ground star observation system

Abstract

The invention discloses an optical axis consistency calibration method for a multi-optical axis ground star observation system, which belongs to the technical field of multi-optical axis imager detection and aims at overcome the defect that optical axis detection on an imaging spectrometer and other instruments of the same kind in a spectral dimension is not easy in the prior art. The method comprises steps: a spectral dimension view field position of a target star in the imaging spectrometer is determined; when the target star enters the view field of the imaging spectrometer, the imaging spectrometer emits strong signals, and at the time, parallelism deviation of the optical axes is smaller than half of the spectral dimension view field; the position of the target star in the spatial dimension view field of the imaging spectrometer is determined; and data of the imaging spectrometer at the nearest point near the central view field are used for determining the position of the target star in the spatial dimension view field of the imaging spectrometer, Gauss fitting location is carried out on all wavelength space dimensions, sum average is carried out on solved central positions, the star image central position is solved by data synchronously acquired by a telescope and an imager, and the parallelism deviation of the optical axes in the spatial dimension is calculated.

Description

technical field [0001] The invention relates to an optical axis consistency checking method of a multi-optical axis ground star observation system, and belongs to the technical field of multi-optical axis imager detection. Background technique [0002] Since the actual direction of the optical axis will deviate from the original position during the production, installation, transportation and use of optical instruments, in order to ensure the consistency and accuracy of the measurement results of the photoelectric measurement system, it is necessary to check the parallelism between the optical axes of each optical instrument to test. At present, there are two types of optical axis detection methods: laboratory measurement and field measurement. Among them, laboratory measurement methods often include pentaprism method, split beam projection method, and large-aperture collimator method. The field measurement method includes the projection target method, etc. The laboratory m...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the prior art that the imaging spectrometer is not easy to detect the optical axis in the spectral dimension, the present invention provides a fast and high-precision parallelism calibration method for multi-optical axis systems using a star tracking system

Images