Multiband Starlight Imaging Photometer and Its Detection Method

A detection method and imaging detector technology, applied in the field of aerosol detection, can solve the problems such as the inability to provide the limitation of nighttime atmospheric aerosol, and achieve the effects of realizing high-precision measurement, deducting the influence of background stray light, and reducing dependence

Active Publication Date: 2021-11-23
INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the limitation that the existing aerosol detection technology can only work in the daytime and cannot provide atmospheric aerosol and other component parameters at night, the present invention provides a multi-band starlight imaging photometer detection system based on starlight signal measurement

Method used

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  • Multiband Starlight Imaging Photometer and Its Detection Method
  • Multiband Starlight Imaging Photometer and Its Detection Method
  • Multiband Starlight Imaging Photometer and Its Detection Method

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Experimental program
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Effect test

Embodiment 1

[0062] Such as Figure 7 As shown, according to the geographical location and time of the instrument, a target star A suitable for local observation is automatically selected by the computer 5 . Utilize the geographic location longitude and latitude, time, and meteorological parameters provided by the weather and GPS module 3, whether the weather conditions are suitable for observation by the computer 5 decision. If it is suitable for observation, the computer 5 automatically calculates the right ascension and declination of the target star, and the computer 5 issues an instruction for two-dimensional tracking of the turntable 2, so that the optical imaging detection system 1 points to the position of the target star. After reaching the position, the filter wheel 7 is controlled to rotate. Sequentially or by specifying the corresponding filter, the target star is imaged on the CCD imaging detector 8 by sub-band, and the collected image is downloaded to the computer 5, and the ...

Embodiment 2

[0065] Based on Embodiment 1, different target stars are alternately observed, such as Figure 8 , at the same time, select target star A, target star B and target star C with different elevation angles respectively (the number of target stars is optional), according to the geographical location and time of the instrument, use the geographical location provided by the weather and GPS module 3 The location latitude and longitude, time, and meteorological parameters are determined by the computer 5 and whether the weather conditions are suitable for observation. If it is suitable for observation, the computer 5 automatically calculates the right ascension and declination of the target star A, and the computer 5 sends an instruction to two-dimensionally track the turntable 2, so that the optical imaging detection system 1 points to the position of the target star A. After reaching the position, control the filter wheel 7 Rotate, sequentially or specify the corresponding filter, s...

Embodiment 3

[0067] Based on Example 1, such as Figure 9 As shown, under the weather conditions where moonlight is visible, the moon is selected as the light source for observation. The specific implementation is as follows: Utilize the geographic location longitude and latitude, time, and meteorological parameters provided by the weather and GPS module 3, whether the weather conditions are suitable for observation by the computer 5 decision. If it is suitable for observation, the computer 5 automatically calculates the right ascension and declination of the moon, and the computer 5 sends an instruction to the two-dimensional tracking turntable 2 to make the optical imaging detection system 1 point to the moon. After the two-dimensional tracking turntable 2 reaches the position, it controls the rotation of the filter wheel 7 , sequentially or specify the corresponding filter, sub-band imaging of the moon on the CCD imaging detector 8, the collected image is downloaded to the computer 5. ...

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Abstract

The invention provides a multi-band starlight imaging photometer and its detection method. The optical imaging detection system is installed on a two-dimensional tracking turntable; the weather and GPS modules are placed in an open position, and the optical imaging detection system, two-dimensional tracking turntable, weather and GPS The modules are respectively connected with the control and data acquisition module through the power supply and the data line, and the control and data acquisition module are connected with the computer. The computer obtains the latitude and longitude, meteorological parameters and time information collected by the meteorological and GPS modules through the control and data acquisition module, and calculates the right ascension and declination angles of the target star according to the selected target star, and transmits them to the two-dimensional tracking turntable, Make the optical imaging detection system aim at the target star, and collect the image of the target star and its surrounding sky, and record and store it in the computer at the same time. The invention can effectively deduct the influence of background stray light in real time, improve the quality of observation data, realize the observation of aerosol at night, and realize high-precision measurement without calibration.

Description

technical field [0001] The invention belongs to the technical field of aerosol detection, and in particular relates to a multi-band starlight imaging photometer and a detection method thereof. Background technique [0002] In recent years, with the deepening of global change research, the aerosol climate effect has attracted more and more attention. Aerosols, weather, and climate affect the global energy radiation balance through direct radiation and indirect radiation, which is a complex interaction and feedback mechanism. In addition, smog weather caused by fine particles is the main type of pollution in northern Chinese cities and seriously affects human health. Limited by the lack of data, the assessment and analysis of aerosol climate impact and environmental effects basically come from satellite and ground-based observation data during the day. [0003] At present, due to the weak signal of night detection, almost all satellite sensors based on optical detection in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/95G01S7/481
CPCG01S7/481G01S17/95Y02A90/10
Inventor 段民征刘崧乔聪聪王鑫霍娟毕永恒
Owner INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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