A5101961795- Advanced Optical Sensing Technologies
- Atmospheric aerosols and clouds
- Ocular and Laser Science Research
- Atmospheric chemistry and aerosols
- Advanced Fiber Laser Technologies
- Target Tracking and Data Fusion in Sensor Networks
- Infrared Target Detection Methodologies
- Blind Source Separation Techniques
- CCD and CMOS Imaging Sensors
- Advanced Semiconductor Detectors and Materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Inertial Sensor and Navigation
- Opinion Dynamics and Social Influence
- Meteorological Phenomena and Simulations
- Complex Network Analysis Techniques
- Advanced SAR Imaging Techniques
- Radar Systems and Signal Processing
- Neural Networks and Applications
- Military Strategy and Technology
- Advanced Algorithms and Applications
- Advanced Fluorescence Microscopy Techniques
- Microwave Imaging and Scattering Analysis
Institute of Electronics
2010-2024
China Electronics Technology Group Corporation
2023-2024
Wuhan University
2017
Institute of Geodesy and Geophysics
2017
Abstract It is a big challenge for lidar to detect soft targets over long distances in the atmosphere due low reflection of and strong atmospheric attenuation. In this paper, we propose an all-day system based on 4 pixel array superconducting nanowire single-photon detectors. This significantly improves detection efficiency aerosol other by utilizing advantages high sensitivity, dark count rate, wide dynamic range photon number resolution. The detects both hard 100 km away atmosphere....
Abstract Observations with lidars at Wuhan (30.5°N, 114.4°E), China, from 2010 to 2013 captured nine cases of slowly ascending humid aerosol/liquid water layers that occurred altitudes ~2–4 km in winter. Each them was almost transparent initially the backscatter ratio far less than 7.0 and depolarization 0.03. With a slow ascent, layer developed into nearly opaque liquid cloud then ice crystals abruptly formed upper edge very high content. The likely came drop freezing. freezing temperatures...
The detection performance of the single-photon lidar (SPL) receiver is investigated as a function optical attenuation and superconducting nanowire detector (SNSPD) parameters (detection efficiency dead time) in strong background environment. With theory, it found that there optimal to make probability highest at given false alarm probability, namely, working conditions. Optical proved be required only when photon number higher than certain value; otherwise, not necessary. Furthermore,...
<sec>Facing the demand for applications such as wide-area terrain mapping and space-based atmospheric measurements, there is an urgent need to develop miniaturized single-photon detection systems with low power consumption that can be adapted airborne platforms. Superconducting nanowire detectors (SNSPDs) have been applied quantum information, bioimaging, deep space communication long-range lidar advantages of high efficiency, dark count rate fast rate. However, traditional SNSPD...
Light Detection and Ranging (lidar) technology has been applied in military civil areas shows great potential. However, coherent lidar detection, significant Doppler Effect velocity uncertainty result a bad influence on moving target ranging. In this study, the authors demonstrate compensation method based both shift evaluation searching matching method. The used dot-linear frequency modulation signal for detection order to achieve distance information same period. Further by using...
This paper presents a novel high efficiency and accuracy three-dimensional (3-D) multiple-input-multiple-output synthetic aperture radar (MIMO-SAR) imaging algorithm. The result of an extended target with 8 sectors star are shown the help FEKO in this which is more sufficient convincing compared usual point targets. Simulation results show that algorithm can obtain same precision images as back-projection (BP) range migration (RMA), while avoiding tedious multi-dimensional interpolation.
A superconducting nanowire single photon detector-(SNSPD-) based lidar with the emission wavelength of 1064 nm was demonstrated for atmospheric remote sensing. The system used to measure marine aerosol over sea in an island Qingdao. distinct moving fog layer range ~70 km observed and corresponding optical parameters were derived. During measurement period, became optically thinner width unchanged. results show that SNSPD-based can be effective