Research And Observation Of Relocatable Sodium Wind / Temperature Lidar

In mesopause region, sodium atoms is a good tracer, upper atmospheric swings through the role of the tracer sodium atoms can obtain the relevant information of atmospheric chemistry and dynamics in the mesopause and low thermal layer. So the detection and study of sodium layer in space science and atmospheric physics is great significance.Sodium wind/temperature lidar detected the environment parameters, such as atmospheric temperature, the wind and the density of the sodium atoms from75 to 105 km is one of the important equipment of near space environment detection, which have the advantages of high time and spatial resolution, high detection sensitivity, multiple parameters detection at the same time.This research work mainly is observation and research of the relocatable Sodium wind/temperature lidar,the main research content is firstly introduced the use of Sodium wind/temperature lidar the basic principle of measuring,the air temperature and wind field of the mesopause region and system of lidar, the second major study the relocatable design of lidar, the final key is analysis and research data of sodium lidar, including sodium layer structure change, sporadic sodium layer(SSL) caused by the atmospheric gravity waves and the mesopause inversion layer(MIL)related research hotspot at home and abroad, etc.First, the basic measuring principle of lidar is transmit laser to inspire metal atom fluorescence, through the analysis to receive the fluorescence intensity, the doppler broadening and doppler frequency shift and other information, can get sodium atomic number density, air temperature and wind speed, etc; The lidar system is mainly including the transmitter system, the receiving system, the data acquisition and control system, the data processing and analysis system, etc.;Finally it introduces the Sodium wind/temperature lidar compared with the meteor radar and other detection equipment.Secondly, in order to achieve the lidar system can relocatable, we will install it on two vehicle platforms, transmitter vehicle platforms and receive vehicle platforms respectively, the transmitter vehicle platforms including the transmitter system, the data acquisition and control system, the data processing and analysis system, etc.; the receive vehicle platforms including the receiving system, mainly installed the three 1 meter diameter telescope and its subsequent optical receiving system.Finally, this article mainly analyze and research data of the sodium lidar and the meteor radar, including sodium layer structure change, sporadic sodium layer(SSL) caused by the atmospheric gravity waves and the mesopause inversion layer related research hotspot at home and abroad using the field near space environment comprehensive detection station, Chinese academy of sciences(langfang, 39 oN, 116oE)。...