A5108025001- Remote Sensing in Agriculture
- Cryospheric studies and observations
- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Atmospheric and Environmental Gas Dynamics
- Remote Sensing and LiDAR Applications
- Urban Heat Island Mitigation
- Land Use and Ecosystem Services
- Laser-Matter Interactions and Applications
- Climate change and permafrost
- Remote Sensing and Land Use
- Climate variability and models
- Geological Studies and Exploration
- Horticultural and Viticultural Research
- Heavy metals in environment
- Semiconductor Lasers and Optical Devices
- Remote-Sensing Image Classification
- Atmospheric aerosols and clouds
- Peatlands and Wetlands Ecology
- Geochemistry and Geologic Mapping
- Coal and Its By-products
University of Chinese Academy of Sciences
2018-2019
Beijing Normal University
2019
Institute of Remote Sensing and Digital Earth
2018-2019
State Key Laboratory of Remote Sensing Science
2018-2019
Zhejiang Normal University
2018-2019
Chinese Academy of Sciences
2010-2018
Institute of Semiconductors
2011
Changchun University of Science and Technology
2000
Topography complicates the modeling and retrieval of land surface albedo due to shadow effects redistribution incident radiation. Neglecting topographic may lead a significant bias when estimating over single slope. However, for rugged terrain, comprehensive systematic investigation on is currently ongoing. Accurately terrain presents challenge in remote sensing applications. In this paper, we focused development simplified estimation method snow-free at 1-km scale based 30-m fine-scale...
Abstract As a widespread landscape, rugged terrain significantly distorts the land surface albedo. Simply neglecting topographic effects in albedo modeling and retrievals can lead to large biases uncertainties over terrain. In spite of gradually increasing research about on albedo, sensitivities different variables remain unclear. this paper, coarse‐scale snow‐free topography were quantitatively investigated using Moderate Resolution Imaging Spectroradiometer (MODIS) data variance‐based...
Topographic effects on canopy reflectance play a pivotal role in the retrieval of surface biophysical variables over rugged terrain. In this paper, we proposed new anisotropic model for discrete forests, Geometric Optical and Mutual Shadowing Scattering-from-Arbitrarily-Inclined-Leaves coupled with Topography (GOSAILT), which considers slope, aspect, geotropic nature tree growth, multiple scattering, diffuse skylight. GOSAILT-simulated areal proportions four scene components (i.e., sunlit...
We report on a passively mode-locked Nd:YVO4 laser using novel graphene oxide saturable absorber fabricated by vertical evaporation method. An 880 nm LD pump source was used to reduce the thermal load of crystal. At power 7.4 W, 1.2 W average output continuous wave with optical conversion efficiency 16.2% achieved. To best our knowledge, this is highest solid-state absorber. The repetition rate pulse 88 MHz energy 13.6 nJ.
Accurately estimating the spatial–temporal distribution of downward surface shortwave radiation (DSSR) is essential for terrestrial ecological modeling and climate change research. The accurate georegistration digital elevation model (DEM) has become one significant bottlenecks improving DSSR accuracy over rugged terrain. To clearly understand quantitatively evaluate impact geolocation bias on estimation under clear sky, this letter conducts a systematical simulation research in Dayekou...
We report a LD side-pumped fundamental-mode (Mx2 = 1.35 and My2 1.27) passive Q-switched mode-locked Nd:YAG laser based on semiconductor saturable absorber mirror (SESAM). At pump current of 12.5 A, the average output power 5.68 W with 80 kHz repetition rate 2 μs pulse width envelope was generated. The within 88 MHz achieved.
This study assessed accuracies of MCD43A3, Global Land-Surface Satellite (GLASS) and forthcoming Multi-source Data Synergized Quantitative Remote Sensing Production system (MuSyQ) albedos using ground observations Huan Jing (HJ) data over the Heihe River Basin. MCD43A3 MuSyQ show similar high with identical root mean square errors (RMSE). Nevertheless, albedo is better correlated measurements when sufficient valid are available or snow-free. The opposite happens less than seven available....
The importance of the bidirectional reflectance distribution function (BRDF) has been well documented in quantitative remote sensing. semiempirical, kernel-driven BRDF model is widely used to generate operational BRDF/albedo products due its simplicity and accuracy. However, effect topography rarely coupled with a kernel-based model. In this paper, new for sloping terrain (KDST) was developed based on framework RossThick-LiSparse-Reciprocal (RTLSR) slope, aspect, geotropic nature tree crown...
The issue for the validation of land surface remote sensing albedo products over rugged terrain is scale effects between reference measurements and coarse products, which caused by complex topography. This paper illustrates a multi-scale strategy specified terrain. A Mountain-Radiation-Transfer-based (MRT-based) upscaling model was proposed in process aggregating fine to scale. simulated data both were used assess performance uncertainties MRT-based model. results showed that could reflect...
We report an efficient single-frequency ring laser pumped directly into emitting level by a fiber-coupled diode (FCLD) at 885 nm for the first time. 4.8 W 1064 was obtained in 0.7 % Nd:YAG with 63% slope efficiency and 51.7% light-light absorbed pump power. At same time, line width of longitudinal mode about 50 MHz, beam nearly diffraction-limited M2 ≈ 1.07.