Method of satellite thermal-infrared remote-sensing in-orbit scaling and satellite remote-sensing temperature product onsite verification

Abstract

The invention discloses a method of satellite thermal-infrared remote-sensing in-orbit scaling and satellite remote-sensing temperature product onsite verification, and the method is realized via synchronous skin temperature and surface temperature measuring devices of the water body. The method comprises the steps that 1) in a water area corresponding to certain pixel in a satellite remote-sensing image, the synchronous skin temperature and surface temperature measuring devices of the water body are arranged into a grid-shaped observation array of equal interval, and a 3D temperature actually measured value near a water surface and atmosphere interface is obtained; 2) different 3D temperature actually measured values are counted and calculated to obtain the average skin temperature and the average surface temperature of the water area; and 3) a MODTRAN model or an LBLRSTM model is used to simulate infrared radiation transmission between the sea surface and a satellite, and in-orbit scaling is carried out on a satellite thermal infrared sensor synchronous with onsite temperature measurement, or onsite verification is carried out on a satellite remote sensing temperature product. Thus, the method can be used to overcome difficulties of space mismatch and time asynchronism between actual measurement data and remote sensing data in satellite thermal-infrared remote-sensing in-orbit scaling and satellite remote-sensing temperature product onsite verification.

Description

Technical field [0001] The invention relates to ocean measurement technology, in particular to a three-dimensional synchronous measurement of surface water temperature in a wide range of sea areas based on a water skin temperature-surface temperature synchronous measurement device to perform on-orbit site calibration of satellite thermal infrared sensors and satellite remote sensing temperature products Method of on-site inspection. Background technique [0002] Sea Surface Temperature (SST) is the most important physical parameter of the upper ocean water body, as well as an important marine ecological environment parameter. SST has a very wide range of applications, including research on air-sea interactions, global climate change, mesoscale ocean processes, water masses and marine ecological environment, ocean numerical simulation, coastal thermal pollution evaluation, and many other fields. [0003] After decades of development, satellite thermal infrared remote sensing techno...

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Problems solved by technology

[0009] Aiming at the above-mentioned deficiencies, the present invention provides a new method for satellite remote sensing calibration using a water body skin temperature-surface temperature synchronous measuring device to solve the problem of satellite thermal infrared remote sensing on-orbit calibration and satellite remote sensing temperature product field verification. The problem of space mismatch and time synchronization between data

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