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Workshop on Hyperspectral Image and Signal Processing

作者： Jun Shao Daqi Xu Chun Feng Mingmin Chi China Centre for Resources Satellite Data and Application Beijing China School of Computer Science Fudan University Shanghai China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of Oceanography (SOA) Hangzhou China

China Centre for Resources satellite data and application (abbreviate as CRESDA) is a core platform to store, process, analyze, and distribute land observing satellite data in China. It can provide high quality and effective services for the State Council and the relevant departments of government and local authorities. In the era of big data, the data center benefits from big data opportunities as well as suffering from big data challenges. In the paper, the big data challenges of the CRESDA are summarized. In particular, four major challenges are comprised of the 3V dimensions of big data (i.e. Volume, Variety, and Velocity) and one specific challenge (i.e., extensibility) in the data center.

关键词： satellites Remote sensing Big data Monitoring

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Shading aware DSM generation from high resolution multi-view satellite images

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地球空间信息科学学报（英文版） 2024年第2期27卷 398-407页

作者： Zhihua Hu Pengjie Tao Xiaoxiang Long Haiyan Wang School of Remote Sensing and Information Engineering Wuhan UniversityWuhanChina China Centre for Resources Satellite Data and Application BeijingChina

In many cases,the Digital Surface Models(DSMs)and Digital Elevation Models(DEMs)are obtained with Light Detection and Ranging(LiDAR)or stereo *** an active method,LiDAR is very accurate but expensive,thus often limiting its use in small-scale *** matching is suitable for large-scale acquisition of terrain information as the increase of satellite stereo ***,underperformance of stereo matching easily occurs in textureless ***,this study proposed a Shading Aware DSM GEneration Method(SADGE)with high resolution multi-view satellite *** the complementarity of stereo matching and Shape from Shading(SfS),SADGE combines the advantage of stereo matching and SfS ***,an improved Semi-Global Matching(SGM)technique is used to generate an initial surface expressed by a DSM;then,it is refined by optimizing the objective function which modeled the imaging process with the illumination,surface albedo,and normal object *** from the existing shading-based DEM refinement or generation method,no information about the illumination or the viewing angle is needed while concave/convex ambiguity can be avoided as multi-view images are *** with ZiYuan-3 and GaoFen-7 images show that the proposed method can generate higher accuracy DSM(12.5-56.3%improvement)with sound overall shape and temporarily detailed surface compared with a software solution(SURE)for multi-view stereo.

关键词： Shape from Shading(SfS) multi-view stereo Digital Surface Model(DSM) high resolution multi-view satellite images

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Tape Barcode Recognition and Plane Positioning Based on Image Processing 6

Tape Barcode Recognition and Plane Positioning Based on Imag...

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6th International Conference on Internet of Things, Automation and Artificial Intelligence, IoTAAI 2024

作者： Qi, Wenping Zeng, Yong Zhang, Shuai Li, Liutong China Centre for Resources Satellite Data and Application Beijing China

ISBN: (纸本)9798350386974

In order to achieve unattended tape storage management, this article designs a tape barcode recognition and positioning technology based on video and image. The algorithm uses the YOLOV5s network model to quickly recognize the tape barcode in the image and the QR code used to record the actual position of the plane, and then uses the ZBAR toolkit to decode it. Finally, the QR code is used as a geometric correction control point for the image, and the actual position of the plane is calculated by the pixel position of the tape barcode. Through testing on the dataset, the recognition time for each tape is 0.007s, and the detection rate refers to the proportion of tapes that can be found and correctly recognized, which is 97.13%. This achieves the goal of efficient inventory of tapes. At the same time, when the position of the camera remains unchanged, after geometric correction processing of the image, the positioning accuracy of the tape can reach 99.99%. From the experimental results, it can be seen that this article has achieved its goal well. © 2024 IEEE.

关键词： Tapes

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Research on the Reconstruction of Observational Geometry for Scanning Multispectral Image 11th

Research on the Reconstruction of Observational Geometry for...

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11th International Conference on Signal and Information Processing, Network and Computers, ICSINC 2023

作者： Wang, Guanzhu Pan, Zhiqiang Zhang, Haoping Yu, Wenyong China Centre for Resources Satellite Data and Application Beijing China

ISBN: (纸本)9789819721153

Most of the scanning multispectral data from domestic land observation satellites only provide the imaging geometry of the scene center, missing the geometry of other pixels. This paper proposes a method for the reconstruction of observational geometry and verify the method using images with observational geometry. The result shows that the relative deviations of the reconstructed observation zenith and azimuth are less than 5%, combined with the Ross-Li BRDF model, it can significantly improve the accuracy of directional surface reflectance and of the calibration coefficients. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Geometry

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Effectiveness evaluation of multi-satellite joint coverage data for large area targets based on cloud prediction information 3

Effectiveness evaluation of multi-satellite joint coverage d...

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3rd International Conference on Remote Sensing, Surveying, and Mapping, RSSM 2024

作者： Shi, Xiaojin Wang, Jingqiao Zhuang, Chaoran Qian, Chengyuan Qi, Wenping Huang, Shusong China Centre For Resources Satellite Data and Application Beijing100094 China

ISBN: (数字)9781510680081

ISBN: (纸本)9781510680074

Optical satellite imaging is easy to be affected by weather, and imaging in the area with high cloud cover will result in poor quality or even complete unavailability of satellite imaging products. Addressing the lack of effective methods for evaluating data acquisition in large-area, multi-satellite joint observations, this paper utilizes the VIRR global cloud daily product data from the FY-3A/3C meteorological satellites spanning 2010 to 2020. This data is analyzed to extract cloud amount information, subsequently used to obtain the regional clear sky index sequence. The SARIMA time series prediction model is then employed to forecast the clear sky index of the observation area effectively. This forecast is combined with satellite transit information to establish a data acquisition validity prediction model. Utilizing the predicted monthly clear sky index for Beijing in 2021, alongside the satellite transit information for each period, the model predicts data validity. The average discrepancy between the predicted and actual values is 0.36. This data validity prediction model can identify optimal observation periods for multi-satellite joint coverage of large-area targets and provide effective data support for coverage prediction within the observation period. © 2024 SPIE.

关键词： satellites

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Analysis of Factors Affecting Image Quality of Optical Maneuvring Imaging satellite 11th

Analysis of Factors Affecting Image Quality of Optical Maneu...

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11th International Conference on Signal and Information Processing, Network and Computers, ICSINC 2023

作者： Shao, Jun Wang, Xiaoyan Lv, Zheng Li, Xiaojin Zhong, Huimin China Center for Resources Satellite Data and Application Beijing100094 China

ISBN: (纸本)9789819721191

Because the imaging conditions have a great influence on the image quality of optical maneuvring imaging satellite, it is necessary to analyze the influencing factors to ensure the image quality. In this paper, the influence of imaging geometric parameters on the quality of high resolution multi-mode images is analyzed. The main manifestation is image supersaturation;Then, the influence of atmospheric conditions on image quality is analyzed. The main performance is image blur. The atmospheric parameters of the camera observation area are obtained synchronously by atmospheric synchronous correction instrument, and the image is clear after atmospheric correction;Finally, the effect of the side-looking angle on the Ground Sample Distance of the optical satellite is analyzed. The Ground Sample Distance decreases with the increase of the side-looking angle, and some suggestions are given to meet the user's application requirements. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Image quality

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Study on Remote Sensing Image Coverage Frequency Based on Spatial Grid 3

Study on Remote Sensing Image Coverage Frequency Based on Sp...

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2023 3rd International Conference on Computer, Remote Sensing and Aerospace, CRSA 2023

作者： Huang, Shusong Zeng, Yong Chen, Weirong Qi, Wenping Zhang, Wenhui China Center for Resources Satellite Data and Application China

The coverage frequency analysis of remote sensing images is helpful to analyse the data acquisition capability of satellites or the vigorous users' demand. In the current research, thermal values are mostly calculated using an individual point or surface target. In this paper, an index RSICF is proposed, which is calculated based on two shapes, image vectors, and spatial grid, to measure the frequency of remote sensing image coverage. The study uses GF-1 satellite image vectors to calculate RSICF around China to verify its availability. The result shows RSICF can reflect the distribution of historical image frequency respectively and can be introduced by creating a heatmap of remote sensing image coverage. © Published under licence by IOP Publishing Ltd.

关键词： data acquisition

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Emergency Scheduling Process Design for ZY303 satellite 10th

Emergency Scheduling Process Design for ZY303 Satellite

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10th International Conference on Signal and Information Processing, Network and Computers, ICSINC 2022

作者： Li, Ziwei Liu, Mingliang Qiu, Hu China Centre for Resources Satellite Data and Application Beijing China

ISBN: (纸本)9789811999673

Different from common missions, emergency missions are characterized by abruptness and high timeliness. Rapid response is required but it has always been a difficulty in satellite mission scheduling. Combined with ZY3-03 satellite priority setting and mission reset design, different yaw angles and load combinations, this paper proposed a 3-step model and various scenarios of emergency task insertion to improve the efficiency of the urgent mission scheduling process. The satellite in-orbit verification shows that the proposed strategy can improve the efficiency of emergency mission scheduling and emergency data acquisition rate. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： satellites

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application in Emergency Tasks Schedule with the GFDM-1 satellite 10th

Application in Emergency Tasks Schedule with the GFDM-1 Sate...

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10th International Conference on Signal and Information Processing, Network and Computers, ICSINC 2022

作者： Liu, Mingliang Qiu, Hu Li, Ziwei China Centre for Resources Satellite Data and Application Beijing China

ISBN: (纸本)9789811999673

Emergency task has characteristics like suddenness, high efficiency and so on. The GFDM-1 satellite has several favorable features to deal with emergency tasks such as multi-angle image mode, priority setting of telecommands, task reset, data processing on orbit and data transmission to relay satellite. Considering rolling schedule strategy of measurement-controlling windows and data transmission windows, designed emergency tasks schedule process, through actual verification, increased success rate in task execution, improved access to effective data, shorted the time for data playback. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： satellites

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Recent Progress of Earth Observation satellites in China

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空间科学学报 2024年第4期44卷 731-740页

作者： HUANG Shusong QI Wenping ZHANG Shuai XIA Tian WANG Jingqiao ZENG Yong China Centre for Resources Satellite Data and Application Beijing 100094

Currently,China has 32 Earth observation satellites in *** satellites can provide various data such as optical,multispectral,infrared,and *** spatial resolution of China Earth observation satellites ranges from low to medium to *** satellites possess the capability to observe across multiple spectral bands,under all weather conditions,and at all *** data of China Earth observation satellites has been widely used in fields such as natural resource detection,environmental monitoring and protection,disaster prevention and reduction,urban planning and mapping,agricultural and forestry surveys,land survey and geological prospecting,and ocean forecasting,achieving huge social *** article introduces the recent progress of Earth observation satellites in China since 2022,especially the satellite operation,data archiving,data distribution and data coverage.

关键词： China Earth Observation satellites satellite operation data archiving data distribution data coverage

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