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Real-time calibration high spectral resolution lidar device

A spectral resolution and laser radar technology, applied in the field of real-time calibration of high spectral resolution laser radar devices, can solve the problems of inability to obtain real-time relative aerosol concentration and atmospheric temperature state information, and real-time calibration of measurement sensitivity, etc., to achieve The effects of reducing measurement errors, reducing inversion errors, and high measurement accuracy

Inactive Publication Date: 2010-05-19
OCEAN UNIV OF CHINA
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Problems solved by technology

[0006] Although the high-spectral resolution lidar technology has entered the stage of commercial experimentation, it is still unable to obtain accurate relative aerosol concentration and atmospheric temperature state information in real time, that is, it is impossible to calibrate the measurement sensitivity in real time and enter the real practical application

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Embodiment Construction

[0014] like figure 1 , the present invention comprises the emission system that is made up of pulsed laser 1, beam expander mirror 2 and reflection mirror 3; By telescope 4, optical filter a5, spectroscope a6, iodine molecular filter 9, photodetector 12 and photodetector 13 The receiving system that forms; The data acquisition system 16 that is connected with photodetector 12, photodetector 13 and data processing computer 17, it is characterized in that it also comprises the beam splitter b7 that the transmitted light of beam splitter a6 arrives, and by Rotating Raman channel 1 composed of spectroscope b7, optical filter b10, and photodetector 14, and rotating Raman channel 2 composed of spectroscope c8, optical filter c11, and photodetector 15, and two rotating Raman channels They are connected to each other through the spectroscope c8, and the photodetector 14 and the photodetector 15 are connected to the data acquisition system 16, and the collected information is transmitt...

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Abstract

The invention relates to a real-time calibration high spectral resolution lidar device for measuring atmospheric wind field. The invention comprises a transmitting system composed of a pulse laser, a beam expander and a reflector, a receiving system composed of a telescope, optical filters, a molecular iodine filter, beam splitters and photoelectric detectors, a data acquisition system connected with the photoelectric detectors, and a data processing computer. The invention is characterized by also comprising two receiving channels of the rotational Raman, and the two receiving channels of the rotational Raman are connected in parallel by the beam splitters, extracts atmospheric molecule rotational Raman spectrum from the original detecting signal, and connected with the data acquisition system, the data acquisition system is connected with the data processing computer and transmits the acquired information to the data processing computer. The invention is characterized in that gasoloid relative concentration and atmospheric parameters are obtained from primary optical detection, and simultaneously wind speed refutation is carried out, measurement efficiency and measurement accuracy are improved with the wind speed measurement accuracy reaching 1m / s.

Description

technical field [0001] The invention relates to a device for measuring atmospheric wind field by laser, more specifically, a laser radar device with real-time calibration and high spectral resolution for measuring atmospheric wind field. Background technique [0002] Atmospheric wind field is an important parameter in meteorological observation, and has important application value in the fields of weather, climate, ocean, environment, transportation, aviation, and aerospace. High-spectral resolution lidar can obtain high-precision and high-temporal-resolution atmospheric wind field data, provide initial data for numerical weather prediction, and improve the observation and forecast capabilities of small and medium-scale disastrous weather; provide wind field monitoring for wind power plants, improve Generator power; it can also quickly and accurately detect turbulence, wind shear and other atmospheric structures that seriously affect the safety of the aircraft during the who...

Claims

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Application Information

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IPC IPC(8): G01S17/95G01S7/481
CPCG01S7/497G01S17/95Y02A90/10
Inventor 吴松华陈阳刘智深
Owner OCEAN UNIV OF CHINA
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