Multiband starlight imaging photometer and detection method thereof

An imaging detector and multi-band technology, applied in the field of aerosol detection, can solve the problems such as the inability to provide night-time atmospheric aerosol limitations, etc.

Active Publication Date: 2021-07-06
INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI
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  • Application Information

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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

Method used

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  • Multiband starlight imaging photometer and detection method thereof
  • Multiband starlight imaging photometer and detection method thereof
  • Multiband starlight imaging photometer and detection method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0062] like Figure 7 As shown, according to the geographic location and time of the instrument, the computer 5 automatically selects a target star A suitable for local observation. Using the geographic location latitude, longitude, time, and meteorological parameters provided by the meteorological and GPS module 3, the computer 5 decides 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, and the computer 5 sends an instruction to track the turntable 2 two-dimensionally, so that the optical imaging detection system 1 points to the position of the target star, and after reaching the position, the filter wheel 7 is controlled to rotate, The target star is imaged on the CCD imaging detector 8 in sequence or by specifying the corresponding filter, and the collected image is downloaded to the computer 5. The computer 5 automatically filters th...

Embodiment 2

[0065] Based on Example 1, different target stars are observed alternately, such as Figure 8 , at the same time, select the target star A, target star B and target star C with different elevation angles (the number of target stars is optional), according to the geographical location and time of the instrument, use the geographical location provided by the meteorology and GPS module 3 The location latitude and longitude, time, and meteorological parameters are determined by the computer 5 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 track the turntable 2 two-dimensionally, so that the optical imaging detection system 1 points to the position of the target star A. After reaching the position, the filter wheel 7 is controlled. Rotate, sequentially or designate the corresponding filter, and ...

Embodiment 3

[0067] Based on Example 1, as Figure 9 As shown, in weather conditions with visible moonlight, select the moon as the light source for observation. The specific implementation is as follows: using the geographic location latitude, longitude, time, and meteorological parameters provided by the meteorological and GPS module 3, the computer 5 decides 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 moon, and the computer 5 sends an instruction to track the turntable 2 in two dimensions, so that the optical imaging detection system 1 points to the moon. After the two-dimensional tracking turntable 2 reaches the position, it controls the filter wheel 7 to rotate. , and sequentially or designate the corresponding filter, the moon is imaged on the CCD imaging detector 8 in different wavelength bands, and the collected image is downloaded to the computer 5...

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Abstract

The invention provides a multiband starlight imaging photometer and a detection method thereof. An optical imaging detection system is mounted on a two-dimensional tracking turntable; a meteorological and GPS module is arranged at an open position, the optical imaging detection system, the two-dimensional tracking turntable and the meteorological and GPS module are respectively connected with the control and data acquisition module through a power supply and a data line, and the control and data acquisition module is connected with the computer. The computer acquires longitude and latitude, meteorological parameters and time information acquired by the meteorological and GPS module through the control and data acquisition module, calculates the right ascension angle and declination angle of the target satellite according to the selected target satellite, and transmits the right ascension angle and declination angle to the two-dimensional tracking turntable, so that the optical imaging detection system is aligned with the target satellite, acquires images of the target satellite and the surrounding sky, meanwhile, the images are recorded and stored in the computer. According to the invention, the influence of background stray light can be effectively deducted in real time, the quality of observation data is improved, the observation of aerosol at night is realized, and high-precision measurement can be realized 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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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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