A5085036181- Synthetic Aperture Radar (SAR) Applications and Techniques
- Advanced SAR Imaging Techniques
- Robotics and Sensor-Based Localization
- Advanced Image and Video Retrieval Techniques
- Geological and Geochemical Analysis
- Remote-Sensing Image Classification
- earthquake and tectonic studies
- Remote Sensing in Agriculture
- Geochemistry and Geologic Mapping
- Remote Sensing and Land Use
- Satellite Image Processing and Photogrammetry
- Geological and Geophysical Studies
- Image Retrieval and Classification Techniques
- Image and Signal Denoising Methods
- Advanced Vision and Imaging
- Soil Moisture and Remote Sensing
- Image and Object Detection Techniques
- Land Use and Ecosystem Services
- Hydraulic and Pneumatic Systems
- Medical Image Segmentation Techniques
- Advanced Fiber Laser Technologies
- High-pressure geophysics and materials
- Flood Risk Assessment and Management
- Forensic Anthropology and Bioarchaeology Studies
- Sparse and Compressive Sensing Techniques
PLA Information Engineering University
2019-2025
Shanghai University
2023-2024
Sichuan University
2022-2024
Hong Kong Baptist University
2023
South China University of Technology
2023
State Key Laboratory of Oral Diseases
2022
Chinese Academy of Geological Sciences
2019-2022
ORCID
2021
Henan Institute of Geological Survey
2016-2018
University of Toronto
2010
Automatic optical-to-synthetic aperture radar (SAR) image matching is still a challenging task due to the existence of severe nonlinear radiometric differences between images and presence strong speckles in SAR images. To address this problem, we propose novel feature descriptor called rank-based local self-similarity (RLSS) for optical-to-SAR template matching. The RLSS an improved version (LSS) descriptor, inspired by Spearman's rank correlation coefficient statistics. It can describe...
Because optical and synthetic aperture radar (SAR) images are complementary, their registration has received extensive attention in joint applications. However, robust SAR image is challenging due to substantial geometric radiometric differences. To address this problem, we propose a fast algorithm for based on novel feature type known as the adjacent self-similarity (ASS). The ASS of pixelwise representation defined quickly finely capture structural features image. extracted by using an...
Granitic pegmatite deposits, which are usually products of orogenic processes during plate convergence, can be used to demonstrate regional tectonic evolution processes. In the eastern Tibetan Plateau in China, Jiajika, Dahongliutan, Xuebaoding, Zhawulong, and Ke’eryin rare metal deposits located southern, western, northern, midwestern, central areas Songpan–Ganzê belt, respectively. this study, we dated two muscovite Ar–Ar ages 189.4 ± 1.1 Ma 187.0 from spodumene pegmatites Dahongliutan...
Modern armed conflicts can cause serious humanitarian disasters, and remote sensing technology is critical in monitoring war crimes assessing post-war damage. In this study, a constrained energy minimization algorithm incorporating the feature bands (IFB-CEM) designed to detect urban burning areas optical images. Due difficulty of obtaining ground survey data battlefield, dual-polarization normalized coherence index (DPNCI) based on multi-temporal synthetic aperture radar (SAR) image,...
Particle filter (PF) is a fully non-linear with Bayesian conditional probability estimation, compared here the well-known ensemble Kalman (EnKF). A Gaussian resampling (GR) method proposed to generate posterior analysis in an effective and efficient way. The Lorenz model used test method. PF (PFGR) can approximate more accurately analysis. present work demonstrates that PFGR possesses good stability accuracy potentially applicable large-scale data assimilation problems.
Multimodal remote sensing image matching is a challenging task because of the existence significant radiometric differences. To address problem, we develop novel multimodal method based on selfsimilarity features. The offset mean filtering proposed first to calculate self-similarity features fast symmetry self-similarity. are presented through multi-channel map (SSM) and corresponding symmetric SSM. On this basis, method, including feature detector named improved maximal self-dissimilarities...
Abstract Three sets of equilibration experiments (Set 1 to Set 3) were performed in cold‐seal pressure vessels investigate the compositional modification quartz‐hosted fluid inclusions after entrapment. Each set experiment consisted two stages. In a pre‐run, containing 5–10 wt% NaCl and selected trace elements synthesized at 700°C/140–200 MPa. These samples then loaded into new capsules together with Cu‐bearing solutions some mineral buffers, re‐equilibrated 600–800°C 70–140 MPa for 6–8...
Scanning synthetic aperture radar (ScanSAR) is the dominant imaging mode of existing SAR satellites. However, in this mode, a burst operation utilized, resulting scalloping problems that significantly impact quality ScanSAR images. In response to poor robustness and high complexity denoising algorithms, based on analysis causes scalloping, suppression method for images considers azimuthal correction errors range spatial variant characteristics proposed. First, estimating azimuth antenna...
Abstract The utilization of scale invariant feature transform algorithm in synthetic-aperture radar images (SAR–SIFT) to match image features may lead principal orientation assignments descriptors being affected by speckle noise, thereby diminishing accuracy. In this study, we propose using the Fourier histogram oriented ratio gradient (Fourier HORG) descriptor for robust matching SAR images. This method is based on SAR–SIFT framework. During description, rotation-invariant HORG established...
Synthetic aperture radar (SAR) images in different polarizations or from sensors are becoming easily available, but registering these is challenging because of the presence significant speckles SAR and existence radiometric differences between images. To address problems, we propose a novel feature descriptor named rank-based ratio self-similarity (RRSS) for robust image registration. The first calculates surface by replacing distance surface, as use more to multiplicative noise, then sorts...
The Zhawulong granitic pegmatite lithium deposit is located in the Ganzi‐Songpan orogenic belt. Fluid inclusions spodumene and coexisting quartz were studied to understand cooling path evolution of fluid within albite–spodumene pegmatite. There are three distinguishable types inclusions: crystal‐rich, CO 2 –NaCl–H O, NaCl–H O. At more than 500°C 350∼480 MPa, crystal‐rich captured during pegmatitic magma‐hydrothermal transition stage, characterized by a dense hydrous alkali borosilicate with...
Unmanned aerial vehicle (UAV) synthetic aperture radar (SAR) image characteristics, such as large geometric distortions, striped inhomogeneous radiation, severe speckle noise and ultra-high resolution, pose significant challenges to multi-view UAV SAR registration. To address these issues, we propose a robust registration algorithm based on the selective correlation of log gradient descriptor. First, slant range images are geocoded using publicly available digital elevation model attenuate...
Lake ice thickness (LIT) is one of the key climate variables in lake domain, but there are currently large uncertainties retrieval LIT. We present and validate a new LIT method that utilizes ICESat-2 data to assist CryoSat-2 echo peak selection, aiming improve accuracy enable acquisition without on-site measurements. The involves screening out similar tracks based on time space constraints. It also dynamically adjusting range constraint window waveforms high-precision surface ellipsoid...
Chromatin modification (CM) is a set of epigenetic processes that govern many aspects DNA replication, transcription and repair. CM carried out by groups physically interacting proteins, their disruption has been linked to number complex human diseases. remains largely unexplored, however, especially in higher eukaryotes such as human. Here we present the DAnCER resource, which integrates information on genes with function from five model organisms, including Currently integrated are gene...
Although winter wheat has been mapped by remote sensing in several studies, such mapping efforts did not sufficiently utilize contextual information to reduce the noise and still depended heavily on optical imagery exhausting classification approaches. Furthermore, influence of similarity measures identification remains unclear. To overcome these limitations, this study developed an object-based automatic approach map using multitemporal Sentinel-1 (S1) Sentinel-2 (S2) imagery. First, after...
甲基卡位于松潘-甘孜造山带内,为特大型花岗伟晶岩型锂-铍矿床。前人以锂辉石中发育的富子晶包裹体为研究对象,着重剖析了甲基卡锂成矿的物理化学条件。然而,就伟晶岩熔(流)体的演化过程,特别是稀有金属成矿的富集机制和物理化学条件,仍缺乏有效制约。308号脉作为甲基卡出露最大的钠长石型锂-铍伟晶岩脉,具有良好的内部分带,较完整地记录了甲基卡伟晶岩结晶演化过程。本文以308号伟晶岩脉为研究对象,开展了系统的流体包裹体研究工作。308号脉较早阶段的结晶介质以外带绿柱石中富子晶流体包裹体为代表,为高温(492~592℃)、低盐度(0.8%~8.5% NaCleqv)、弱碱性(CO<sub>3</sub><sup>2-</sup>和HCO<sub>3</sub><sup>-</sup>)、富挥发分(F、P、B、Li)的硅酸盐水体系,估算成矿压力平均值为400MPa。308脉较晚阶段的结晶介质以内带锂辉石中富子晶流体包裹体为代表,为高温(482~565℃)、低盐度(1.6%~8.5%...
To reduce the number of ground control points required for block adjustment unmanned aerial vehicle (UAV) synthetic aperture radar (SAR) images, a robust method is pro-posed. The proposed aims to solve problem unstable solutions caused by jittering UAV SAR platforms. This based on range Doppler model. By analyzing correlation between antenna phase center, velocity, and centroid seven orientation parameters, this performs images with three parameters: center initial imaging moment, centroid,...
In order to improve the simulation efficiency under premise of ensuring fidelity synthetic aperture radar (SAR) images, we propose a BVH-assisted fast SAR image method based on spatial segmentation. The beam scanning model is established RD imaging geometric relation, and bounding volume hierarchy (BVH) algorithm used assist in obtaining time-varying latticed radiation shadow areas within beam, combining them with real-time position sensors complete electromagnetic (EM) wave transmission....
The presence of complex geometric and radiometric differences in multimodal remote sensing images poses a significant challenge for existing image matching methods. In this letter, we propose robust method based on an enhanced oriented self-similarity descriptor. Based our previous descriptor, the assigned main orientations are refined by introducing Gaussian smoothing function to improve robustness, redundant information is eliminated downsampling descriptor neighborhood efficiency....
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