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敏捷SAR卫星视频成像模式的姿态机动策略
视频SAR 敏捷卫星 姿态机动 偏航补偿
2019/4/18
视频SAR作为一种新型微波遥感体制，可用于对热点区域动态目标的持续监视。提出一种基于大角度聚束模式的视频SAR实现方法，分析视频SAR回波数据分割机理以及基于敏捷SAR卫星视频成像模式的姿态机动策略，并通过偏航补偿实现不同视频帧成像区域的无旋转控制，最终给出三轴期望姿态与姿态角速度。通过数学仿真验证上述姿态机动策略的有效性。
枣树和棉花是新疆地区的两大优势作物。利用高空间分辨率遥感影像对作物进行识别,更加快速、准确地获取枣树和棉花的种植面积及其分布区域,以利于相关部门政策的制定及农作物的精确管理。【方法】 本文以新疆阿拉尔市主要农作物为研究对象,运用基于像素与面向对象的遥感影像分类方法,通过比较光谱角制图（SAM）、支持向量机（SVM）、CART决策树（DTs）、随机森林（RF）这4种机器学习算法在高空间分辨率卫星影像...
CHALLENGES IN OPERATIONS AND MAINTENANCE OF ANTARCTICA GROUND STATION FOR EARTH OBSERVATION SATELLITES
Data Reception system (DRS) Data Communication System (DCS) Payload (PLD) Telemetry and Tele-Command (TTC) Visible Orbits
2018/11/19
Remote sensing and Geographical Information System (GIS) through Earth Observation (EO) Satellites have become most important tools for many of the societal applications of day-to-day life, during the...
CLASSIFICATION OF THE STRUCTURE OF CITIES THROUGH MID-RESOLUTION SATELLITE IMAGERY AND PATCH BASED NEURAL NETWORKS
Convolutional Neural Networks (CNN) Autoencoders Sentinel 2B Indian Cities
2018/11/19
The studies in the classification of the urban spatial structure have been essential in deriving insights into the land cover and the built typology which helped in the estimation of energy consumptio...
EXTRACTION OF BLUE ICE AREA USING ALBEDO VALUE DERIVED FROM LANDSAT-8 SATELLITE DATA
Blue Ice Landsat-8 Albedo Polar record Glacier Image Processing
2018/11/19
Blue Ice Areas (BIAs) or bare ice areas are zones of glacier where surface mass balance is negative, sublimation forms the major ablation process and surface albedo is relatively small. Exceptionally ...
MULTI-SATELLITE OBSERVATION OF MEGH CYCLONE
Cyclone Megh RISAT-1 Synthetic aperture radar cloud microphysics Wind speed
2018/11/19
Cyclone Megh, a category-3 (Saffir-Simpson scale) cyclonic storm is regarded as the worst tropical cyclone to ever strike Yemen’s island of Socotra. In this paper, we aim to investigate the wind struc...
BUILDING FOOTPRINT EXTRACTION FROM HIGH RESOLUTION SATELLITE IMAGERY USING SEGMENTATION
Segmentation Building Extraction Multi-Resolution Algorithm Rule-Based Feature Extraction High Resolution Satellite Imagery
2018/11/19
Identification and mapping of urban features such as buildings and roads are an important task for cartographers and urban planners. High resolution satellite imagery supports the efficient extraction...
A WEB-BASED VIRTUAL LABORATORY FOR SATELLITE IMAGE PROCESSING AND ANALYSIS
Education Satellite Image Processing E-Learning Tool Web-based Virtual Laboratory
2018/11/19
With continuous increase in the utilization of satellite images in various engineering and science fields, it is imperative to equip students with additional educational aid in subject of satellite im...
ROAD NETWORK IDENTIFICATION AND EXTRACTION IN SATELLITE IMAGERY USING OTSU'S METHOD AND CONNECTED COMPONENT ANALYSIS
Road identification road extraction Otsu's method connected component analysis morphological operations
2018/11/19
As the high resolution satellite images have become easily available, this has motivated researchers for searching advanced methods for object detection and extraction from satellite images. Roads are...
EXTRACTION OF BUILT-UP AREA USING HIGH RESOLUTION SENTINEL-2A AND GOOGLE SATELLITE IMAGERY
Built-up area Extraction Normalized Difference Index High Resolution Satellite Imagery Sentinel-2A Google Satellite Imagery
2018/10/30
Accurate information about the built-up area in a city or town is essential for urban planners for proper planning of urban infrastructure facilities and other basic amenities. The normalized differen...
ASSESSMENT OF SEASONAL VARIABILITY FOR WIND SPEED AND SIGNIFICANT WAVE HEIGHT USING SATELLITE ALTIMETER OVER MALAYSIAN SEAS
Wind speed significant wave height Seasonal variations Satellite Altimeter Radar Altimeter Database System Monsoons
2018/10/30
Malaysia is located in the equatorial region and experienced climate hot, humid and rainy throughout the year. These have brought four monsoon seasons to Malaysia which can be categorised as Northeast...
MAPPING SPATIOTEMPORAL DISTRIBUTION OF MANGROVES IN MAFIA ISLAND IN TANZANIA USING LANDSAT IMAGERY
Mapping Mangroves Satellite Image Landsat Mafia Island
2018/7/11
Mangroves are important for survival of coastal communities as they provide ecosystem services that support coastal population and their livelihoods. Most coastal communities largely depend on ecosyst...
一种卫星推进分系统热控的优化设计方法
卫星推进分系统 热控 优化设计 分舱操作
2018/5/4
根据传统卫星推进分系统热控要求，针对推进舱内肼管路及部件进行加热带缠绕和多层隔热组件包覆的问题，提出了一种基于新型推进剂条件下的推进分系统热控优化设计，即取消推进舱内热控处理措施，而是在推进舱的外侧板包覆多层隔热组件，并采用电磁阀补偿加热.对采用优化设计的推进分系统热控设计进行了热平衡试验和在轨验证.结果表明，推进分系统的温度水平和功耗要求均满足目前中国对于卫星的热控要求，且优化设计使推进分系统热...
IMAGE QUALITY ASSESSMENT OF HIGH-RESOLUTION SATELLITE IMAGES WITH MTF-BASED FUZZY COMPREHENSIVE EVALUATION METHOD
Image Quality Assessment High-resolution Satellite Images MTF Fuzzy Comprehensive Evaluation
2018/4/30
A Modulation Transfer Function (MTF)-based fuzzy comprehensive evaluation method was proposed in this paper for the purpose of evaluating high-resolution satellite image quality. To establish the fact...
MAPPING GLOBAL OCEAN SURFACE ALBEDO FROM SATELLITE OBSERVATIONS: MODELS, ALGORITHMS, AND DATASETS
Albedo Ocean BRDF Remote sensing Radiative transfer Surface radiation budget
2018/4/30
Ocean surface albedo (OSA) is one of the important parameters in surface radiation budget (SRB). It is usually considered as a controlling factor of the heat exchange among the atmosphere and ocean. T...