Xiaolong Dong
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View article: High-Efficiency Deployable V-Band Reflectarray Antenna Design, Tolerance Analysis and Measurement
High-Efficiency Deployable V-Band Reflectarray Antenna Design, Tolerance Analysis and Measurement Open
A deployable reflectarray antenna (RA) using a three-times expansion structure working at the V-band for 12U CubeSat is presented in this paper. Double-circle ring unit cells with excellent dispersion characteristics are used to constitute…
View article: Interlayer-expanded LDH@biochar nanoreactors via sodium citrate mediation: Unlocking hidden active sites for persulfate-driven imidacloprid removal
Interlayer-expanded LDH@biochar nanoreactors via sodium citrate mediation: Unlocking hidden active sites for persulfate-driven imidacloprid removal Open
The widespread usage of imidacloprid (IMI) has led to its frequent detection in aquatic environments, posing significant risks to ecosystems and human health. To address this issue, we developed a sodium citrate modified layered metal hydr…
View article: Applying molecular oxygen for organic pollutant degradation: Strategies, mechanisms, and perspectives
Applying molecular oxygen for organic pollutant degradation: Strategies, mechanisms, and perspectives Open
Molecular oxygen (O2) is an environmentally friendly, cost-effective, and non-toxic oxidant. Activation of O2 generates various highly oxidative reactive oxygen species (ROS), which efficiently degrade pollutants with minimal environmental…
View article: Dual-Mode Sea Ice Extent Retrieval for the Rotating Fan Beam Scatterometer
Dual-Mode Sea Ice Extent Retrieval for the Rotating Fan Beam Scatterometer Open
Scatterometers are highlighted in polar applications, such as sea ice extent retrieval. There are currently three types of spaceborne scatterometer in operation, among which the rotating pencil beam scatterometer and the rotating fan beam …
View article: Wind Wave Effects on the Doppler Spectrum of the Ka-Band Spaceborne Doppler Measurement
Wind Wave Effects on the Doppler Spectrum of the Ka-Band Spaceborne Doppler Measurement Open
Sea surface wind, waves, and currents are the three basic parameters that describe the dynamic process of sea surface, and they are coupled with each other. To more accurately describe large-scale ocean motion and extract the ocean dynamic…
View article: Frequency Channel Selection and Performance Simulation of a Microwave Radiometer for Temperature and Sulfuric Compound Profiling of the Venusian Lower Atmosphere
Frequency Channel Selection and Performance Simulation of a Microwave Radiometer for Temperature and Sulfuric Compound Profiling of the Venusian Lower Atmosphere Open
Exploring the Venusian lower atmosphere is crucial for studying the atmospheric circulation, surface‐atmosphere interactions, and origin and evolution of the Venusian atmosphere and climate. In this study, we investigate the theoretical ca…
View article: Sea Ice Extent Retrieval Using CSCAT 12.5 km Sampling Data
Sea Ice Extent Retrieval Using CSCAT 12.5 km Sampling Data Open
Polar sea ice extent exhibits a highly dynamic nature. This paper investigates the sea ice extent retrieval on a fine (6.25 km) grid based on the 12.5 km sampling data from the China France Ocean Satellite Scatterometer (CSCAT), which is g…
View article: Remote Sensing of Tropospheric Ozone from Space: Progress and Challenges
Remote Sensing of Tropospheric Ozone from Space: Progress and Challenges Open
Ozone stands out as a crucial trace gas within the Earth’s atmosphere, exerting a substantial influence on climate change and air pollution. Tropospheric ozone plays an important role in the formation of photochemical smog, and its variati…
View article: Satellite Velocity Correction Method of Ocean Current Retrieval for a Spaceborne Doppler Scatterometer
Satellite Velocity Correction Method of Ocean Current Retrieval for a Spaceborne Doppler Scatterometer Open
For a spaceborne pencil-beam rotating Doppler scatterometer, its precision in measuring the ocean surface motion depends on the Doppler centroid of the received signals. The Doppler centroid is determined by the relative motion between the…
View article: Polar Sea Ice Detection Using a Rotating Fan Beam Scatterometer
Polar Sea Ice Detection Using a Rotating Fan Beam Scatterometer Open
Scatterometers are dedicated to monitoring sea surface wind vectors, but they also provide valuable data for polar applications. As a new type of scatterometer, the rotating fan beam scatterometer delivers a higher diversity of incidence a…
View article: Outlook for Space Microwave Radiation Reference Transfer and Traceability
Outlook for Space Microwave Radiation Reference Transfer and Traceability Open
面向全球气候变化研究和高精度气象预报对空间微波辐射测量基准的迫切需求，由于传递链路复杂导致国际微波辐射基准尚未建立。为进一步提升遥感卫星观测精度和稳定性，建立空间辐射基准溯源评价体系，前瞻性地提出高精度可溯源的空间微波辐射基准传递顶层方案和技术解决方案，明确需要突破的微波辐射基准载荷关键技术，空间微波辐射基准传递与溯源理论、方法和模型，全链路微波辐射基准溯源传递一体化验证技术，微波系统全链路物理级基准传递和误差仿真评估技术等，为空间微波辐射测量提供统一参考基准，实现高精度、…
View article: Simulation of Surface Clutter Recognition Method in Lunar Lava Tube Exploration
Simulation of Surface Clutter Recognition Method in Lunar Lava Tube Exploration Open
月球上可能存在大量可用于抗辐射、躲避陨石撞击和月球表面极端温度变化的熔岩管。月球表面杂波识别以及与熔岩管目标回波的区分是月球熔岩管目标探测的重要问题。根据高频电磁波与低频电磁波在月壤中的路径衰减快慢不同，熔岩管道高低频功率比与月表杂波高低频功率比不同的特征，提出了一种利用高低频电磁波功率比进行月表杂波识别的方法。基于分辨率、回波功率、信杂比和信噪比对熔岩管探测雷达进行了参数优化设计，建立了仿真系统，利用伪谱时域方法对不同走向的月球熔岩管回波进行了仿真研究。仿真结果表明了利用…
View article: Simulation of Surface Clutter Recognition Method in Lunar Lava Tube Exploration
Simulation of Surface Clutter Recognition Method in Lunar Lava Tube Exploration Open
月球上可能存在大量可用于抗辐射、躲避陨石撞击和月球表面极端温度变化的熔岩管。月球表面杂波识别以及与熔岩管目标回波的区分是月球熔岩管目标探测的重要问题。根据高频电磁波与低频电磁波在月壤中的路径衰减快慢不同，熔岩管道高低频功率比与月表杂波高低频功率比不同的特征，提出了一种利用高低频电磁波功率比进行月表杂波识别的方法。基于分辨率、回波功率、信杂比和信噪比对熔岩管探测雷达进行了参数优化设计，建立了仿真系统，利用伪谱时域方法对不同走向的月球熔岩管回波进行了仿真研究。仿真结果表明了利用…
View article: Perspectives of Transmission and Traceability of Space Microwave Radiometric Benchmark
Perspectives of Transmission and Traceability of Space Microwave Radiometric Benchmark Open
面向全球气候变化研究和高精度气象预报对空间微波辐射测量基准的迫切需求，由于传递链路复杂导致国际微波辐射基准尚未建立，为进一步提升遥感卫星观测精度和稳定性，建立空间辐射基准溯源评价体系，前瞻性地提出高精度可溯源的空间微波辐射基准传递顶层方案和技术解决方案，明确需要突破的微波辐射基准载荷关键技术，空间微波辐射基准传递与溯源理论、方法和模型，全链路微波辐射基准溯源传递一体化验证技术，微波系统全链路物理级基准传递和误差仿真评估技术等，为空间微波辐射测量提供统一参考基准，实现高精度、…
View article: Investigation of Coal Preparation for Life Cycle by Using Building Information Modeling (BIM): A Case Study
Investigation of Coal Preparation for Life Cycle by Using Building Information Modeling (BIM): A Case Study Open
Increasing the efficiency of coal preparation is the key link of mine production. This study proposed a framework of coal preparation for life cycle based on Building Information Modeling (BIM), in which the data resources can be retransmi…
View article: Venus Volcano Imaging and Climate Explorer Mission
Venus Volcano Imaging and Climate Explorer Mission Open
金星火山和气候探测任务（Venus Volcano Imaging and Climate Explorer，VOICE）聚焦金星火山与热演化历史、水与板块运动、内部结构和动力学、气候演化和生命信息探索等重大科学问题，提出采用极化合成孔径雷达（Polarimetric Synthetic Aperture Radar，PolSAR） 、下视与临边结合的微波辐射探测仪（Microwave Radiometric Sounder，MWRS）和紫外–可见–近红外多光谱成像仪（Ul…
View article: CFOSAT Rotating Fan‐Beam Scatterometer Backscatter Measurement Processing
CFOSAT Rotating Fan‐Beam Scatterometer Backscatter Measurement Processing Open
The China‐France Oceanography Satellite (CFOSAT) was successfully launched on October 29, 2018, which carries two innovative payloads, that is, the surface waves investigation and monitoring (SWIM) instrument and the rotating fan‐beam scat…
View article: A Comparison of Quality Indicators for Ku-Band Wind Scatterometry & for Typhoons Lekima and Krosa
A Comparison of Quality Indicators for Ku-Band Wind Scatterometry & for Typhoons Lekima and Krosa Open
2021 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 11-16 July 2021, Brussels, Belgium.-- 4 pages, 6 figures
View article: Consolidation of Quality Control Procedures for Scatterometers
Consolidation of Quality Control Procedures for Scatterometers Open
2021 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 11-16 July 2021, Brussels, Belgium.-- 4 pages, 3 figures
View article: An Improved Method of Noise Subtraction for the CFOSAT Scatterometer
An Improved Method of Noise Subtraction for the CFOSAT Scatterometer Open
The microwave scatterometer onboard the China-France Oceanography Satellite (CFOSAT Scatterometer, CSCAT) is the first rotating fan-beam scatterometer (RFSCAT) in operation. It is used to obtain the ocean surface wind field by measuring th…
View article: Design and Implementation of a Chirp Transform Spectrometer for Deep Space Exploration
Design and Implementation of a Chirp Transform Spectrometer for Deep Space Exploration Open
根据深空探测对频谱分析仪抗辐射、高分辨率、低功耗的需求，研究一种基于Chirp变换的高分辨率频谱分析仪设计及其实现.利用中心频率为1GHz、带宽为400MHz、色散时间为10μs的声表面波滤波器，提出了一种模拟和数字相结合的高分辨率频谱分析仪设计方案，并搭建原理实验系统完成了实测验证，其分析带宽为400MHz，频率分辨率达到152kHz，功耗约为3.6W.分析了压缩线器件非理想特性对频率分辨率的影响，利用实测压缩线频率响应特性获得幅度和相位补偿曲线，对展宽线信号进行幅相失配…
View article: Martian Atmosphere Study Using THz Limb Sounder
Martian Atmosphere Study Using THz Limb Sounder Open
对火星大气进行连续高分辨率观测是研究火星大气物理和化学过程的重要手段.太赫兹临边探测技术通过测量火星大气中的风和光化学循环中的重要气体（CO，O3，H2O，H2O2等）提高对火星的认知.针对火星大气遥感的探测需求，分析了300～1000GHz频段的频谱特征.针对探测卫星对于载荷质量、功耗等参数的要求，提出一个560GHz频段的火星大气太赫兹临边探测仪设计方案，并利用辐射传输模型ARTS中的行星工具箱进行仿真.仿真结果显示：火星大气温度的反演精度优于4K，其中45km高度以下…
View article: Developments and Future Strategies of Earth Science from Space in China
Developments and Future Strategies of Earth Science from Space in China Open
The Earth Science from Space is a comprehensive interdisciplinary science to study the interaction, process and evolution of different spheres in the Earth system based on the information observed from the satellite observations. In order …