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Method for measuring and calibrating atmospheric transmissivity

A technology of atmospheric transmittance and calibration method, applied in the field of atmospheric transmittance measurement, can solve problems such as the degradation of calibration quality and environmental condition requirements, and achieve the effects of improving measurement accuracy, simple operation, and accurate and reliable calibration results.

Active Publication Date: 2017-05-31
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

In theory, this calibration method is relatively accurate, but in practice, Langley calibration has strict requirements on environmental conditions, which is difficult to meet, and the data used often has some noise, which reduces the quality of calibration

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  • Method for measuring and calibrating atmospheric transmissivity

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Embodiment Construction

[0024] Such as figure 1 As shown, a method for measuring and calibrating atmospheric transmittance is characterized in that: an aircraft 1 and a ground measuring device 2 are included, a stabilized platform 3 is mounted on the aircraft 1, and a stabilized platform 3 is installed There are LED light sources and laser heads that emit light stably, and the ground measurement device 2 includes a ground station computer, a two-dimensional tracking platform 4 and a telescope 5 installed on the two-dimensional tracking platform 4, and the ground station computer sends control signals to the aircraft The flight controller of 1 controls the aircraft 1 to fly to the beginning of the path to be measured. When the measurement starts, the horizontal distance between the aircraft 1 and the two-dimensional tracking platform 4 is calculated by calculating the difference between the instant position, height and the position and height of the two-dimensional tracking platform, Use the inverse t...

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Abstract

The invention discloses a method for measuring and calibrating atmospheric transmissivity. According to the method, a stabilizing pilot platform is mounted on an aircraft; an LEG light source capable of emitting light stably and a laser head are arranged on the stabilizing pilot platform; the aircraft is capable of automatically executing a flight task and stably hovering; and a ground measurement device comprises a ground station computer, a two-dimensional tracking platform and a telescope arranged on the two-dimensional tracking platform. According to the method, an atmospheric transmittance and atmospheric attenuation coefficient on a measured path can be calculated by adopting a mathematic processing method for measuring dense sampling on a measured path and comparatively calculating the measurement data, so that influence of calibration error of a target light source and a measurement instrument can be eliminated, and the measurement accuracy of atmospheric transmittance can be improved.

Description

technical field [0001] The invention relates to the technical field of atmospheric transmittance measurement, in particular to an atmospheric transmittance measurement and calibration method. Background technique [0002] Atmospheric transmittance is an important parameter reflecting the nature of atmospheric radiation transfer, and has important reference value in applications such as atmospheric radiation, remote sensing of earth resources, environmental monitoring, and space target monitoring. The infrared radiation characteristics of space targets are one of the important bases for target identification and on-orbit information determination. Infrared radiation characteristics include information such as target temperature and irradiance, and are usually measured by ground-based measurement methods. In ground-based measurements, it is of great significance to obtain high-precision mid-wave infrared whole-layer atmospheric transmittance. [0003] At present, there are m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/59
CPCG01N21/59
Inventor 谭逢富王浩侯再红何枫张巳龙靖旭
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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