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Laboratory testing method for atmospheric transmissivity of multi-band light radiation

A technology of atmospheric transmittance and test method, applied in the direction of transmittance measurement, etc., can solve the problems of inability to verify the accuracy and effectiveness, test equipment, and test conditions.

Active Publication Date: 2013-04-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Simulation calculation is widely used because it is not limited by test site conditions and cost, but its accuracy and effectiveness cannot be verified, and it can only be used as an auxiliary means; while radiation test measurement is a direct means to obtain the real radiation characteristics of the target. Transmittance is an important factor that limits the accuracy of target radiation measurement. However, there are many limitations in direct field test measurement of atmospheric transmittance, such as the complexity of test equipment and test conditions. Test method that can easily simulate atmospheric transmittance

Method used

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  • Laboratory testing method for atmospheric transmissivity of multi-band light radiation
  • Laboratory testing method for atmospheric transmissivity of multi-band light radiation
  • Laboratory testing method for atmospheric transmissivity of multi-band light radiation

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Embodiment 1

[0046] figure 1 , 2 and 4 show a specific embodiment of the invention. figure 1 It is a schematic flowchart of an embodiment of the multi-band optical radiation atmospheric transmittance laboratory testing method of the present invention. Such as figure 1 As shown, the test system of the present invention mainly includes a radiation source device 1 for generating multi-band radiation light, an aperture 2, a parallel light generating device 3, an optical modulation device 4, a simulated atmospheric column transmission attenuation device 5, and a multi-band spectral radiation Meter 6, lock-in amplifier 7, signal generator control device 8 and data acquisition device 9.

[0047] The radiation source device 1 for generating multi-band radiation light adopts a cavity-type blackbody radiation source in this embodiment, and the cavity-type blackbody radiation source needs to be calibrated before testing to obtain the relationship between its temperature and emission spectrum.

[...

Embodiment 2

[0056] image 3 It is another structural diagram of the simulated atmospheric column transmission attenuation device in the embodiment of the laboratory test method for multi-band optical radiation atmospheric transmittance of the present invention. Such as image 3 As shown, the simulated atmospheric column transmission attenuation device 5 can be divided into a plurality of internal sealed tanks. In this embodiment, the method of equal proportion conversion is adopted to convert the atmosphere within a certain length range (250 km) to a length of L (2 In the sealed tank of m), optical windows 11 are arranged between each sealed tank, and each sealed tank is filled with compressed gas column 13 and compressed gas column 14 respectively, wherein the compressed gas column 14 can also be liquid water, etc., which can absorb or scatter A liquid that radiates light. Different compressed gas columns 13 and 14 can be combined to simulate different external atmospheric environments...

Embodiment 3

[0059] The difference from Embodiment 1 is that the front optical window, the optical window and the rear optical window are all short-wave infrared windows.

[0060] Others are with embodiment 1.

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Abstract

The invention relates to a laboratory testing method for atmospheric transmissivity of multi-band light radiation. The laboratory testing method comprises the following steps that radiation light is generated by a radiation light source device, and converted into parallel sine radiation light; the sine radiation light radiates into the front of a simulated atmosphere column transmission attenuation device and radiates out from the back of the simulated atmosphere column transmission attenuation device; the simulated atmosphere column transmission attenuation device comprises a seal pot filled with at least one kind of compressed gas to be tested; optical windows are arranged at the front and the back of the seal pot; the compressed gas to be tested is a certain gas in the atmosphere, which is compressed into the seal pot, has the same sectional area as that of the seal pot, and is within a certain length range; and data collection and analytical processing are conducted on the sine radiation light attenuated by the simulated atmosphere column transmission attenuation device. Under a laboratory environment, the laboratory testing method for the atmospheric transmissivity of the multi-band light radiation can simulate the testing of attenuation coefficients of ultraviolet light radiation, visible light radiation and infrared light radiation in the atmospheric transmission through a compressed air column, and is simple and convenient.

Description

technical field [0001] The invention relates to a multi-band optical radiation test method, in particular to a laboratory test method for multi-band optical radiation atmospheric transmittance which can be simulated in a laboratory environment. Background technique [0002] In recent years, target radiation measurement has become an important research direction at home and abroad. Target radiation measurement is an important means to obtain target characteristics and identify targets. The current target radiation research methods mainly include simulation calculation and radiation test measurement. Simulation calculation is widely used because it is not limited by test site conditions and cost, but its accuracy and effectiveness cannot be verified, and it can only be used as an auxiliary means; while radiation test measurement is a direct means to obtain the real radiation characteristics of the target. Transmittance is an important factor that limits the accuracy of target ...

Claims

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Application Information

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IPC IPC(8): G01N21/59
Inventor 徐钰蕾宋玉龙万志沈宏海孙明超李海星
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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