A5101632089- Advanced Optical Sensing Technologies
- Remote Sensing and LiDAR Applications
- Water Quality Monitoring and Analysis
- Ocular and Laser Science Research
- Air Quality Monitoring and Forecasting
- Water Quality Monitoring Technologies
- Underwater Vehicles and Communication Systems
- Optical Coherence Tomography Applications
- Extraction and Separation Processes
- Advanced Fiber Laser Technologies
- Optical Imaging and Spectroscopy Techniques
- 3D Surveying and Cultural Heritage
- Molecular Junctions and Nanostructures
- Sensor Technology and Measurement Systems
- Advanced Image Fusion Techniques
- Mine drainage and remediation techniques
- Oil Spill Detection and Mitigation
- Image Enhancement Techniques
- Advanced Sensor Technologies Research
- Surface Roughness and Optical Measurements
- Solid State Laser Technologies
- Remote Sensing and Land Use
- Underwater Acoustics Research
- Mosquito-borne diseases and control
- Optical measurement and interference techniques
Chinese Academy of Geological Sciences
2024-2025
China University of Geosciences
2025
Beijing University of Posts and Telecommunications
2025
Harbin Institute of Technology
2014-2024
Nantong University
2023-2024
Hebei GEO University
2024
National Vaccine and Serum Institute
2023
PLA Army Engineering University
2019
Shanghai Shipbuilding Technology Research Institute
2018
Guizhou Institute of Technology
2018
The Salt Lake Mahai in Qaidam Basin, western China contains large and thick lithium-rich clay sediments that exhibit great economic potential for lithium exploration. This study analyzed the occurrence of related dissolution mechanisms these through mineral identification, chemical analyses, monitoring brine composition evolution. Our results show mainly occurred as interbeds between salt layers fillings crystals. dominant is illite, followed by chlorite, kaolinite, an illite-smectite mixed...
In this paper, we proposed a novel method to determine the oil film thickness on water with wide range, which is based intensity ratio between laser-induced fluorescence and Raman scattering of without films. To verify feasibility method, presented portable detection system employs laser diode at 405 nm an intensified charged-coupled device (ICCD) detector. Using system, diesel films variable thicknesses were measured different distances. The was in range from 0.07 mm 36.62 average relative...
In this invited paper, a novel water chemical oxygen demand (COD) detection method based on laser spectroscopy is proposed, and the COD value obtained according to intensity ratio of Fluorescence-Raman signal produced by incident into water. Based (LFRR) method, we design portable quality measurement system. which, 405 nm semiconductor used as light source. The coupled delivering port Y-type fiber then transmitted generated Mie scattered light, Raman corresponding fluorescence are received...
There are considerable reserves of low-grade solid potash resources in the shallow part Mahai Salt Lake Qaidam Basin, and lithium brine resulting from solid–liquid conversion mining quite abundant. The comprehensive utilization these is an important urgent problem. In this study, to fully utilize resources, ore was used for systematic simulated dissolution experiments, combined with geochemical X-ray diffraction analyses. following key results were obtained: (1) Most Li+ area deposited on...
This paper presents a low-dropout linear regulator (LDO) with ultra-low quiescent current in high-voltage environments. A pre-regulation module is employed to provide stable low-voltage output, reducing the use of transistors. The integration error amplifiers and reference circuits effectively reduces while chip area. Load detection function used reduce over temperature protection circuit under no-load conditions. Stability within full load range achieved through zero-pole tracking...
In this letter, we develope a control and image processing system for Streak Tube Imaging Lidar (STIL).In the system, data acquisition card software interface are programmed in Visual Basic (VB) while is finished by MATLAB.A STIL imaging experiment carried out laboratory.We obtained intensity range images of targets with pseudo color reconstruction set raw streak at different distances acquired STIL.The resolution better than 2 centimeters.
A high frame rate streak tube imaging lidar (STIL) for real-time 3D of underwater targets is presented in this paper. The system uses 532nm pulse laser as the light source, maximum repetition 120Hz, and width 8ns. LabVIEW platform used system, control, synchronous image acquisition, data processing display are realized through PC. experiment target carried out a flume with attenuation coefficient 0.2, images different depth material obtained, 100Hz, detection 31m. For an distance 22m,...
In this paper, we proposed a stepping equivalent range-gate method (S-ERG method) to measure the speed and distance of moving target for range-gated imaging lidar. method, is obtained by recording time at which passes front back edges range gate, information can also be gate same time. To verify feasibility stationary with different speeds were measured S-ERG method. By using not only respectively, but target. Compared rotational displacement sensors, measurement error less than 5%, whether...
Abstract In this paper, we introduce a newly developed water turbidity detection system and present novel retrieval method based on the laser scattering‐Raman ratio (LSRR). The is spectroscopy technology, which delivers light into sample collects scattering light, Raman corresponding fluorescence through Y‐type optical fiber. Experimental measurements standard formazin solutions were carried out. linear correlation coefficient between LSRR real values was up to 0.971. We propose two...
Laser Induce Fluorescence (LIF) is a widely used new telemetry technology. It obtains information about oil spill and film thickness by analyzing the characteristics of stimulated fluorescence has an important application in field rapid analysis water composition. A set LIF detection system for marine pollution designed this paper, which uses 355nm high-energy pulsed laser as excitation light source. high-sensitivity image intensifier detector. The upper machine sends digital signal through...
A precise delay system for a streak tube imaging lidar (STIL) is developed. Two schemes are designed that suitable long- and short-distance imaging. The digital scheme can reach 100 μs, its precision <6 ns; the analog 1200 ns <1 ns. Using STIL system, three-dimensional (3-D) experiments carried out on land targets at about 2.3-km range underwater 25-m range. experimental results show device produce times effectively verify 3-D quality of STIL. This also has advantages stable operation, being...
Most of the traditional camouflage target detection rely on human eyes to make a simple magnification observation through white light instruments, but result is usually not good. The hyperspectral instrument can acquire spectral images certain band range, and then obtain continuous curve object. In general, there are differences in curves between different objects. With detection, camouflaging characteristics camouflaged backgrounds different. order best effect, difference clothing...
Brillouin Light Detection and Ranging (LIDAR) in ocean telemetry can be used for remote sensing of sound velocity, temperature salinity profiles the ocean. It is one most promising technologies to survey rapidly, its virtues flexibility, efficiency high accuracy. On basis pulse transmission process stimulated scattering (SBS), a LIDAR equation obtained, relationships between maximum detection depth output energy per laser attenuation coefficient light seawater are analyzed. The results show...
A new method for rapid water quality assessment was introduced and a micro laser induced fluorescence spectrometer used to measure five kinds of water. The results show that the could evaluate well. © 2019 Author(s)
During the underwater LiDAR imaging process, images achieved by conventional constant threshold adjacent frame difference (AFD) method normally loses distance information of targets. This is mainly due to Gaussian distribution laser light intensity field, which leads inhomogeneous in from target acquired charge-coupled devices (ICCD). In order overcome this issue, novel dynamic (DTAFD) was proposed paper. The DTAFD modifies following pixel intensities different parts single image ICCD. After...
The attenuation coefficient of a water body is one the important factors for describing its features. However, remote measurement in real time still challenge. In this paper, we demonstrated novel method to realize real-time measurements fresh using flash imaging lidar based on adjacent frame difference (AFD) and backscattering model. general, firstly investigated relationship between intensity model body. Then, at front back edges range-gate obtained by AFD was brought into obtain...
There are some concerns about the safety of live attenuated yellow fever vaccines (YF-live), particularly viscerotropic adverse events, which have a high mortality rate. The cellular production vaccine will not cause these effects and has potential to extend applicability those who allergic reactions, immunosuppression, age. In this study, inactivated (YF) was prepared adsorbed with Alum/CpG. humoral immunities were investigated in mouse model. results showed that Alum/CpG (20 μg/mL) could...