Publications by authors named "Shengguang Qin"
Article Synopsis
- - A new dual-wavelength lidar system, called Wind Flux 3000, can independently monitor particulate matter (PM) transport flux and wind conditions, combining both aerosol and wind measurements effectively.
- - The system provides key data including the particulate extinction coefficient, wind speed, direction, and other atmospheric parameters, which helps in understanding the relationship between PM concentration and environmental factors.
- - Utilizing advanced ensemble learning techniques, the study developed models that outperformed traditional methods in predicting PM concentration, achieving strong correlations and reduced errors in test predictions.
In this study, a 1550 nm coherent high-spectral-resolution lidar (CHSRL) is developed to measure the optical properties of aerosols and atmospheric wind profiles in the atmospheric boundary layer. To determine the optical properties, a coherent frequency discriminator based on the fast Fourier transform is designed in the CHSRL to separate the Mie and the Rayleigh-Brillouin backscatter spectra to fulfill the needs of high-spectral measurements. The atmospheric wind velocity is retrieved using the simultaneously measured Doppler shift.
View Article and Find Full Text PDFAiming at the detection of atmospheric water vapor mixing ratio, depolarization ratio, backscatter coefficient, extinction coefficient and cloud information, the Water vapor, Cloud and Aerosol Lidar (WACAL) is developed by the lidar group at Ocean University of China. The lidar consists of transmitter, receiver, data acquisition and auxiliary system. For the measurement of various atmospheric physical properties, three channels including Raman channel, polarization channel and infrared channel are integrated in WACAL.
View Article and Find Full Text PDF