Calibration optical system based on geosynchronous orbit differential absorption spectrometer
A geosynchronous orbit and optical system technology, applied in the field of optical measurement, can solve the problems of large volume, heavy weight, and reduced reliability of the optical system, and achieve the effects of easy development process, fewer mirrors, and high reliability
Active Publication Date: 2019-02-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Benefits of technology
This patented technical solution described in the current embodiments allows for improved performance over existing systems while reducing costs associated with new components. By combining two types of lenses together instead of just one alone, these techniques improve both image quality and reduce distortion errors caused during measurements. Additionally, they have multiple options available for achieving specific desired results such as measuring infrared signals accurately without color friction interference. Overall, their design makes them suitable for various applications where precise temperature control is important.
Problems solved by technology
This patents describes different types of astronomy and astrophysics instruments called Differential Absorbence Spectrum System(DISS). These include both terrestrial and atmosphere ones where they operate under specific conditions like temperature variations due to their own activity. However, these instruments have certain limitations such as requiring long periods before being able to accurately determine the inclinations required for accurate measurements. Additionally, current methods require multiple steps involving several devices including an interferometer baseline unit, a reflective plate, and various other components, making it difficult to maintain consistently high accuracy levels throughout its lifetime.
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[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0040] A calibration optical system based on a geosynchronous orbit differential absorption spectrometer, the calibration optical system includes an oscillating mirror system, a front optical system, a sunlight diffuse reflection plate assembly and a sunlight blocking door assembly; the oscillating mirror system includes a pointing mirror 1 , swing mirror swing sweep shaft system 2, motor harmonic group 3, swing mirror U-shaped bracket 4; wherein pointing mirror 1, swing sweep shaft system 2 and motor harmonic component 3 form a complete module, through the swing mirror U-shaped bracket 4. It is connected and fixed with the whole spectrometer, which can be disassembled and installed as a whole. The front optical system includes a primary mirror 5 , a secondary mirror 6 , a third reflective mirror 7 , a plane turning mirror 8 and a slit 9 . The su
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The invention discloses a calibration optical system based on a geosynchronous orbit differential absorption spectrometer. The calibration optical system is composed of an oscillating mirror system, afront optical system, a solar diffuse reflection plate assembly and a solar light blocking door assembly. The oscillating mirror system is composed of a pointing mirror, a sweeping shaft system, a motor harmonic group and an oscillating mirror U-shaped bracket. The front optical system consists of a primary mirror, a secondary mirror, a third mirror, a plane mirror and a slit. The solar diffuse reflection plate assembly consists of a Teflon diffuse reflection plate and corresponding structural components. The solar light blocking door assembly includes a solar baffle and a motor assembly. Thecalibration optical system introduces a bidirectional reflection distribution function of external solar illuminance with known spectral irradiance at suitable on-board calibration time, thereby accurately measuring the diffuse reflection plate and establishing an approximate lambertian surface source with known spectral radiance to provide known radiation input for a remote sensor. The system has high measurement accuracy, compact volume, light weight and high reliability.
Description
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