Device and method for observing and analyzing apparent spectrums of water bodies of three channels

Abstract

The invention discloses a device and a method for observing and analyzing the apparent spectrums of water bodies of three channels. The device comprises a spectrometer sensor group, a main supporting frame, an irradiance sensor supporting arm and two groups of radiance sensor supporting arms with the same structures, wherein the spectrometer sensor group comprises two radiance sensors and an irradiance sensor; the main supporting frame comprises a vertical installing plate and a horizontal base; the installing plate is vertically fixed on the horizontal base and is provided with a plurality of installing holes for installing the irradiance sensor supporting arm and the radiance sensor supporting arms; the irradiance sensor is fixedly installed on the irradiance sensor supporting arm in a vertical manner of facing the sky; and the two radiance sensors are respectively installed on the radiance sensor supporting arms in a position-adjustable manner and point to the sky and the water respectively at a preset zenith angle. The device and the method disclosed by the invention have the advantages that spectral data of three targets can be acquired simultaneously according to the preset observation geometry, so that the observation and the analysis for the apparent spectrums of the water bodies of the three channels are realized.

Description

technical field [0001] The invention belongs to the technical field of spectrum measurement and remote sensing inversion, and in particular relates to a three-channel water body apparent spectrum observation and analysis device and method. Background technique [0002] The apparent optical parameters of water mainly include water-leaving radiance, normalized water-leaving radiance and remote sensing reflectance, etc. They are the basic physical quantities of ocean water color remote sensing, and they are also the optical performance of water pigment components. Accurate acquisition of apparent optical parameters on site will be beneficial to the development of bio-optical algorithms and atmospheric correction algorithms, as well as the radiation correction of spaceborne remote sensors and the authenticity test of their data. In the prior art, the remote sensing reflectance R rs by the formula R rs =L W / E d (0 + ) can be calculated. Therefore, it is necessary to first ...

AI Technical Summary

Problems solved by technology

If the meteorological conditions are unstable during this process, it will be difficult to match the measured water body radiance spectrum, sky radiance spectrum and downlink irradiance spectrum, and eventually the calculated remote sensing reflectance R rs and the water-leaving radiance L W Inaccurate

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