A5085184306- Soil Moisture and Remote Sensing
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Ocean Waves and Remote Sensing
- Remote Sensing in Agriculture
- Precipitation Measurement and Analysis
- Remote Sensing and LiDAR Applications
- Arctic and Antarctic ice dynamics
- Robotics and Sensor-Based Localization
- Climate change and permafrost
- Advanced Fiber Optic Sensors
- Video Analysis and Summarization
- Plant Water Relations and Carbon Dynamics
- Hydrology and Watershed Management Studies
- Photonic and Optical Devices
- Indoor and Outdoor Localization Technologies
- Turbomachinery Performance and Optimization
- Geophysics and Sensor Technology
- Atmospheric chemistry and aerosols
- Gaze Tracking and Assistive Technology
- Advanced Neural Network Applications
- Geophysical Methods and Applications
- Electromagnetic Scattering and Analysis
- Image and Object Detection Techniques
- Digital Media Forensic Detection
- Biocrusts and Microbial Ecology
Xinjiang Institute of Ecology and Geography
2025
Chinese Academy of Sciences
2020-2025
Shanghai Jiao Tong University
2024
Beihang University
2011-2024
Inner Mongolia University of Technology
2024
Zhejiang A & F University
2022-2023
Beijing Haidian Hospital
2022
Southwest Jiaotong University
2021
Shandong Agricultural University
2021
Fudan University
2021
As a common image editing operation, composition aims to combine the foreground from one and another background image, resulting in composite image. However, there are many issues that could make images unrealistic. These can be summarized as inconsistency between background, which includes appearance (e.g., incompatible illumination), geometry unreasonable size), semantic mismatched context). Image task decomposed into multiple sub-tasks, each sub-task targets at or more issues....
Soil fungi are essential to ecosystem processes, yet their elevational distribution patterns and the ecological mechanisms shaping communities remain poorly understood actively debated, particularly in arid regions. Here, we investigated diversity underlying soil fungal along an gradient (1,707-3,548 m) on northern slope of Central Kunlun Mountains northwest China. Results indicated that dominant phyla identified across seven gradients were Basidiomycota Ascomycota, displaying a unimodal...
The object detection and recognition algorithm based on the fusion of millimeter-wave radar high-definition video data can improve safety intelligent-driving vehicles effectively. However, due to different modalities video, how fuse two effectively is key point. difficulty lies in methods such as insufficient adaptability image distortion alignment coordinate transformation also mismatching information levels be fused. To solve problem millimeter wave this paper proposes a decision-level...
Forest age is a crucial parameter for evaluating the state and potential of carbon sequestration in forest ecosystems. However, lack time-series will lead to an inability capture disturbance restoration history, resulting increased uncertainty estimating sinks. To address this issue, we aimed propose integrated algorithm estimation based on recovery using Zhejiang Province forests as example. Based Google Earth Engine (GEE) platform, first used random (RF) estimate 2004, then LandTrendr with...
The estimation of characteristic parameters such as diameter at breast height (DBH), aboveground biomass (AGB) and stem volume (V) is an important part urban forest resource monitoring the most direct manifestation ecosystem functions forests; therefore, accurate valuable for evaluating ecological functions. In this study, density variables canopy point clouds were extracted Scheme 1 combined with structure 2 based on unmanned aerial vehicle lidar (UAV-Lidar). We analyzed spatial...
This paper aims to propose a new coastal observable based on the computation of ratio between coherent and incoherent averaging as an alternative time effectiveness proposed by previous works. Experimental data have been processed develop relationship wind speed observable. The influence fitting results elevation angle, samples, delay lag align local replica scattered signals are analyzed obtain optimal retrieval. When number averaged samples is less than 150, range relative specular...
Establishing accurate models for light scattering has attracted widespread attention in optical research. Existing works include the linear system model and Lambertian model, which achieve imaging small objects through a medium or identifying scenes hidden from direct line of sight. However, predicting speckle patterns accurately at specific location after with minimal computational resources remains challenge. In this work, we introduce that considers surface as wavefront modulation matrix,...
Wave scattering from two-dimensional (2-D) random rough surfaces up to several thousand square wavelengths has been previously analyzed using the sparse-matrix canonical grid (SMCG) method. The success of SMCG method highly depends on roughness surface for a given area. We present multilevel expansion algorithm overcome this limitation. proposed entails use three-dimensional (3-D) grid. This is generated by uniform discretization vertical displacement along height (z-axis) in addition...
Global navigation satellite system-reflectometry (GNSS-R) has attracted much attention in remote sensing, such as sea wind speed detection, soil moisture, and ice. In order to verify the algorithm of GNSS-R, simulation GNSS-R plays an important role this research field. Delay waveform (DW) delay-Doppler map (DDM) are main observables simulation, usually effects by complex ocean environment, swell. Besides wind, article focuses on analyzing influence swell GNSS-R. article, a model DW DDM is...
Land surface temperature (LST) plays a significant role in water circulation and energy balance at both global regional scales. Thermal disaggregation technique, which relies on vegetation indices, has been widely used due to its advantage producing relatively high resolution LST data. However, the spatial enhancement of satellite using soil moisture delineated indices not gained enough attention. Here we compared performances dryness index (TVDI), normalized difference (NDVI), fractional...
Rainfall is an indispensable link in the atmospheric water cycle, which plays a critical role forest hydrology. Quercus acutissima and Cunninghamia lanceolata are two fast-growing economically important tree species middle lower reaches of Yangtze River. They extensively applied restoration vegetation, hydraulic engineering, development artificial forests. The primary aims this study were to describe compare changes soil content following rainfall events, while elucidating their...
Based on a developed three-layerair–ice–water reflection model, this article simulates the evolution of coefficient versus elevation angle. Due to interference between signal components from air–ice and ice–water interfaces, experiences an oscillating pattern angle so that detecting sea ice using power or amplitude reflected global navigation satellite system (GNSS) has choose suitable reduce influence pattern. A surface is more stable presents higher correlation than dynamic ocean surface,...
In this paper, a method for extracting the height of urban forest trees based on smartphone was proposed to efficiently and accurately determine tree heights. First, used obtain person–tree images, LabelImg label dataset constructed. Secondly, deep learning called You Only Look Once v5 (YOLOv5) small-hole imaging scale principles, measurement model This approach supports recognition mark functions characteristics person in single image. Finally, measurements were obtained. By using method,...
The accurate classification of tree species is essential for the sustainable management forest resources and effective monitoring biodiversity. However, a literature review shows that most previous unmanned aerial vehicle (UAV) light detection ranging (LiDAR)-based studies on fine have used only limited intensity features, accurately identifying relatively few species. To address this gap, study proposes developing new feature—intensity frequency—for LiDAR-based eight Intensity frequency...
The Global Navigation Satellite System Pseudo Interference Reflectometry (GNSS-PIR) is proposed for ground-based soil moisture remote sensing in this letter. It combines the signal received by up-looking right-hand circularly polarized (RHCP) antenna with that down-looking left-hand (LHCP) to form an oscillatory carrier noise ratio (CNR) waveform. analyses of waveform quality and parameters' sensitivities comparison GNSS Interferometric (GNSS-IR) indicate both amplitude phase GNSS-PIR at...
Synthetic aperture radar (SAR) data have been widely and primarily used for soil-moisture estimation. The original backscattering coefficients show great noise temporal-spatial decorrelation due to complex surface features seasonal vegetation changes, which increase the difficulty of estimation over Qinghai-Tibet Plateau (QTP). To overcome these limitations, a retrieval method based on Distributed Scatterers Adaptive Filter (DSAF) is proposed applied in this paper. First, statistically...
Abstract. Detachments of large parts low-angle mountain glaciers in recent years have raised great attention due to their threats lives and properties downstream. While current studies mainly focused on post-event analysis, a few opportunities presented themselves assess the potential hazards glacier prone detachment. Here we present comprehensive analysis dynamics runout hazard (∼20∘) valley glacier, close Qinghai–Tibet railway highway, East Kunlun Mountains Plateau. The changes morphology,...
Abstract In this paper, we consider transmission problems for wave propagation in two inhomogeneous half-spaces with a locally perturbed hyperplane interface. A radiation condition is obtained the problem framework of spaces B and *. It then used, together , * limiting absorption method to prove existence unique solution problem.
We present a modified model for residual intensity modulation (RIM) observed in lithium niobate phase modulators, which is suitable both narrow linewidth and wide lasers. This based on two key points leading to RIM: one the optical propagation loss, proportional applied voltage, other interference between an injected wave its reflection from substrate. In order verify model, RIM measured accurately with different linewidths of input lasers respectively. The experimental results are good...
The application of integrated optical components into a single module provides method increasing the level integration with real potential reducing unit cost and raising reliability. A new was used to design micro-optical transceiver an interferometric fiber optic gyroscope (IFOG) system. By using free-space coupling method, all parts except phase modulator sensing coil were built in form active configuration IFOG, including SLD chip, photoelectric detector, beam splitter light source...