Eight-channel radiometer capable of realizing self-calibrating function

Abstract

The invention discloses an eight-channel radiometer capable of realizing a self-calibrating function. The radiometer also has a radiation observation and self-calibrating function. The eight-channel radiometer comprises an observation light path, a related photon generating module, a scanning motor module, a multiplexing telescope module, a collimating light path module, a light splitting and gathering light path module, a photoelectric detection and signal processing module. The decay factors of the optoelectronic circuit of the eight-channel radiometer can be evaluated by disposing the related photon calibrating device in the radiometer, and then the periodic correction of the calibration coefficient of the eight-channel radiometer can be realized. The related photon calibrating device is absolute, and the tracing to the high-precision measurement standard is not required, and therefore the higher calibrating precision can be achieved.

Description

technical field [0001] The invention relates to the fields of remote sensing science and optical radiation measurement, in particular to the design of an eight-channel radiometer realizing the self-calibration function. Background technique [0002] The spectroradiometer is the most important photoelectric measuring device for obtaining the spectral radiation information of the remote sensing observation target. Aerospace and many other fields have a wide range of applications. [0003] At present, there are many spectroscopic methods of commercialized spectroradiometers, including optical filters, gratings, prisms, liquid crystal tunable, etc. These spectroradiometers generally need to be calibrated in the laboratory before observation to obtain the calibration of the spectroradiometer coefficient. On the satellite observation platform, general remote sensors will be affected by outer space environmental factors such as space ultraviolet radiation and high-energy particle...

AI Technical Summary

Problems solved by technology

[0005] Whether it is on-satellite calibration or on-orbit calibration, in order to improve the application level of satellite payloads, it is necessary to trace the radiation value of satellite optical loads to the SI unit system. The load is traceable to a high-precision measurement standard, but the general measurement standard will also change on the satellite platform. How to evaluate this change? In addition, arranging on-board calibrators on the satellite platform will take up many resources of the satellite platform and affect the service life of the satellite.

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