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The Austrian node of the natural resources satellite remote sensing cloud service platform:examples of Sino-Austrian cooperation

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Geo-Spatial Information Science 2021年第1期24卷 145-151,I0015页

作者： Wolfgang Kainz xinming tang Yucai Xue Department of Geography and Regional Research University of ViennaViennaAustria Land Satellite Remote Sensing Application Center Ministry of Natural Resources of the Peoples Republic of ChinaBeijingChina

The Austrian node of the Natural Resources Satellite Remote Sensing Cloud Service Platform was established in 2016 through a cooperation agreement between the Land Satellite Remote Sensing Application Center(LASAC),Ministry of Natural Resources of the Peoples Republic of China and the University of Vienna,*** this agreement panchromatic and multi-spectral data of the Chinese ZY-3 satellite are pushed to the server at the University of Vienna for use in education and *** far,nearly 500 GB of data have been uploaded to the *** technical note briefly introduces the ZY-3 system and illustrates the implementation of the agreement by the first China-Sat Workshop and several case *** of them are already completed,others are still *** include a geometric accuracy validation of ZY-3 data,an animated visualization of image quick views on a spherical display to demonstrate the time series of the image coverage for Austria and Laos,and the use of ZY-3 data to study the spread of bark beetle in the province of Lower *** accuracy study of DTMs from ZY-3 stereo data,as well as a land cover analysis and comparison of Austria with ZY-3 and other sensors are still ongoing.

关键词： Remote sensing geographic information systems ZY-3 satellite hyperglobe Land Satellite Remote Sensing Application Center(LASAC)

Potential application of particle based simulations in reservoir security management

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Journal of Southeast University(English Edition) 2008年第S1期24卷 120-125页

作者： Yang, Ping tang, xinming Shi, Shaoyu Wu, Xiaoliang School of Resources and Environmental Science Wuhan University Wuhan 430079 China Chinese Academy of Surveying and Mapping Beijing 100039 China CSIRO Mathematical and Information Sciences Wembley WA 6913 Australia

In order to model the movement progress in case of risks such as dam collapse and coastal inundation, particle-based simulation methods, including the discrete-element method and smoothed particle hydrodynamics, which have specific advantages in modeling complex three-dimensional environmental fluid and particulate flows, are adopted as an effective way to illustrate environmental applications possibly happening in the real world. The theory of these methods and their relative advantages compared with traditional methods are discussed. Examples of 3-D flows on realistic topography including the flooding of a river valley as a result of a dam collapse and coastal inundation by a tsunami are introduced. Issues related to validation and quality data availability are also discussed. The results show that the simulations provide a valuable insight in a given situation for the security management of reservoir dams. Validation can only be performed where both the initial and final states can be very well characterized.

关键词： geophysical simulations particle based simulation methods discrete-element method smoothed particle hydrodynamics dam-breaks

Development of a vivo rabbit ligated intestinal Loop Model for HCMV infection

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Journal of Animal Science and Biotechnology 2017年第3期8卷 738-749页

作者： Jin tang Qiaoxing Wu xinming tang Ruihan Shi Jingxia Suo Guangping Huang Junqing An Jingyuan Wang Jinling Yang Wenzhuo Hao Ruiping She Xun Suo National animal protozoa laboratory College of VeterinaryMedicineChina Agricultural UniversityBeijing 100193China Laboratory of Animal Pathology&Public Health College of Veterinary MedicineChina Agricultural UniversityBeijing 100193China

Background： Human Cytomegalovirus（HCMV） infections can be found throughout the body, especially in epithelial tissue. Animal model was established by inoculation of HCMV（strain AD-169） or coinoculation with Hepatitis E virus（HEV） into the ligated sacculus rotundus and vermiform appendix in living rabbits. The specimens were collected from animals sacrificed 1 and a half hours after ***： The virus was found to be capable of reproducing in these specimens through RT-PCR and *** inflammation damage was found in HCMV-infected tissue. The viral protein could be detected in high amounts in the mucosal epithelium and lamina propria by immunohistochemistry and ***, there are strong positive signals in lymphocytes, macrophages, and lymphoid follicles. Quantitative statistics indicate that lymphocytes among epithlium cells increased significantly in viral infection ***： The results showed that HCMV or HEV ＋ HCMV can efficiently infect in rabbits by vivo ligated intestine loop inoculation. The present study successfully developed an infective model in vivo rabbit ligated intestinal Loop for HCMV pathogenesis study. This rabbit model can be helpful for understanding modulation of the gut immune system with HCMV infection.

关键词： HCMV HEV Inoculating ligated intestine in vivo Immunohistochemistry and confocal immunofluorescence Pathological lesion Rabbit sacculus rotundus Vermiform appendix

China’s Stereo Surveying And Mapping Satellite ZY-3 And Its Applications

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Aerospace China 2009年第4期10卷 2-5页

作者： Sun Chengzhi tang xinming The Satellite Surveying and Mapping App-lieation Center SBSM

surveying and mapping is indispensable for economic and social development andwidely applied in various fields in economic construction and social development. Modern surveying and mapping technology, taking satellite navigation and positioning, airborne and space remote sensing and geographical information system technologies as its core, represents a nation＇s science and technology development level and comprehensive state power.

关键词：现代测绘技术卫星导航应用地理信息系统技术立体中国技术发展水平社会发展

高分七号卫星立体影像与激光数据复合测绘处理原理及方法

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遥感学报 2024年第6期28卷 1539-1550页

作者：周平唐新明自然资源部国土卫星遥感应用中心北京100048

高分七号卫星(GF-7)是全球首颗同步搭载了光学立体相机和激光测高仪的对地观测卫星,其可以同时获取亚米分辨率的两线阵光学立体影像和稀疏地面激光高程点。为保障GF-7卫星能够实现全球范围1∶1万比例尺立体测图精度,本文根据光学相机和... 详细信息

高分七号卫星(GF-7)是全球首颗同步搭载了光学立体相机和激光测高仪的对地观测卫星,其可以同时获取亚米分辨率的两线阵光学立体影像和稀疏地面激光高程点。为保障GF-7卫星能够实现全球范围1∶1万比例尺立体测图精度,本文根据光学相机和激光测高仪工作过程中的误差传播机理,分析了利用激光高程点提升立体影像高程精度的基本原理;设计了一种GF-7立体影像与激光高程点复合测绘处理方法,构建了激光高程点在立体影像上自动精确量测方法、激光高程点与立体影像联合区域网平差模型等,力求通过激光高程点实现立体影像高程精度的来有效提升。为验证本文所述方法的有效性,选取了河北省北部区域70景GF-7立体影像和463个激光高程点开展复合测绘处理试验。结果表明:立体影像在平地、丘陵、山地、高山地和全区域的高程中误差分别由原来的3.00 m、4.68 m、2.86 m、2.48 m和3.19 m,降低至0.35 m、0.66 m、0.74 m、0.91 m和0.68 m;平面中误差分别是4.99 m、3.52 m、4.42 m、5.99 m和4.82 m。影像平面和高程精度均能满足中国1∶1万比例尺立体测图的精度要求。此外,采用本文所述方法构建的GF-7立体影像与激光高程点复合测绘处理系统已在GF-7卫星牵头主用户单位实现业务化应用,对未来全球范围1∶1万比例尺地理信息资源建设具有重要意义。

关键词：遥感高分七号卫星立体影像激光高程点复合测绘处理 1∶10000比例尺测图

Research on Key Technologies of Precise InSAR Surveying and Mapping Applications Using Automatic SAR Imaging

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Journal of Geodesy and Geoinformation Science 2019年第2期2卷 27-37页

作者： xinming tang Tao LI Xiaoming GAO Qianfu CHEN Xiang ZHANG Satellite Surveying and Mapping Application Centre National Administration of Surveying Mapping and Geoinformation Beijing 100048 China

Precise interferometric synthetic aperture radar (InSAR) is a new intelligent photogrammetric technology that uses automatic imaging and processing means. Precise InSAR has become the most efficient satellite surveying and mapping (SASM) method that uses the interferometric phase to create a global digital elevation model (DEM) with high precision. In this paper, we propose the application of systematic InSAR technologies to SASM. Three key technologies are proposed: calibration technology, data processing technology and post-processing technology. First, we need to calibrate the geometric and interferometric parameters including the azimuth time delay, range time delay, and atmospheric delay, as well as baseline errors. Second, we use the calibrated parameters to create a precise DEM. One of the important procedures in data processing is the determination of phase ambiguities. Finally, we improve the DEM quality through the joint use of the block adjustment method, long and short baseline combination method and descending and ascending data merge method. We use 6 sets of TanDEM-X data covering Shanxi to conduct the experiment. The root mean square error of the final DEM is 5.07 m in the mountainous regions. In addition, the low coherence area is 0.8 km 2. The result meets the China domestic SASM accuracy standard at both the 1∶50 000 and 1∶25 000 measurement scales.

关键词： InSAR global mapping calibration post-processing DEM

高分七号卫星激光测高数据大型湖泊水位测量精度评估

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遥感学报 2022年第1期26卷 138-147页

作者：李国元唐新明自然资源部国土卫星遥感应用中心北京100048 江苏省地理信息资源开发与利用协同创新中心南京210023

卫星激光测高数据在湖泊水位测量方面具有重要的应用价值和独特优势,本文针对国产高分七号卫星上装备的线性体制全波形激光测高仪,开展在大型湖泊水位测量方面的应用探讨。介绍了高分七号卫星的基本参数,并与其他类卫星做了对比,分析了... 详细信息

卫星激光测高数据在湖泊水位测量方面具有重要的应用价值和独特优势,本文针对国产高分七号卫星上装备的线性体制全波形激光测高仪,开展在大型湖泊水位测量方面的应用探讨。介绍了高分七号卫星的基本参数,并与其他类卫星做了对比,分析了影响湖泊水位测量精度的卫星侧摆、大气散射、回波波形饱和等因素,研究了湖泊水面激光点的提取方法,结合ICESat、ICESat-2在青海湖和哈拉湖上的激光点开展了对比分析,并利用RTK-GPS测量方式对呼伦湖冰面激光点进行了实地精度验证。结果表明,高分七号卫星湖面激光点虽然稀疏,但内部一致性较好,其中青海湖面高分七号两波束激光高程标准偏差分别为0.056 m和0.080 m,与ICESat的0.079 m相当;相邻时间在哈拉湖同一湖面的高分七号两个波束与ICESat-2的高程均值相差分别为-5.2 cm和-8.0 cm;经实地测量评价两波束的湖面激光点绝对高程精度分别为:-0.030±0.109 m和-0.195±0.049 m。高分七号激光测高仪测量湖泊水位从精度上是可行的,但还存在激光重频率偏低、观测能力弱等问题。相关结论对于拓展高分七号卫星激光测高数据在大型湖泊水位测量的应用以及后续激光测高卫星的立项论证均具有参考价值。

关键词：高分七号卫星激光测高 ICESat-2 湖泊水位精度评估

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我国民用光学卫星测绘产品体系的建立与应用

测绘学报 2022年第7期51卷 1386-1397页

作者：唐新明王鸿燕自然资源部国土卫星遥感应用中心北京100048

经过10多年的发展,我国民用光学卫星测绘及其应用取得了较大的发展。本文系统总结了我国民用光学卫星特别是立体测图卫星的在轨情况、技术参数及数据获取等总体情况。在介绍卫星测绘产品处理和体系构建等技术的基础上,对卫星测绘及其产... 详细信息

经过10多年的发展,我国民用光学卫星测绘及其应用取得了较大的发展。本文系统总结了我国民用光学卫星特别是立体测图卫星的在轨情况、技术参数及数据获取等总体情况。在介绍卫星测绘产品处理和体系构建等技术的基础上,对卫星测绘及其产品的应用情况进行了概况和总结,并对“十四五”期间我国测绘卫星及卫星测绘应用的发展进行了展望。

关键词：卫星测绘资源三号高分七号产品体系卫星应用

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资源三号02星激光测高精度分析与验证

测绘学报 2017年第12期46卷 1939-1949页

作者：李国元唐新明国家测绘地理信息局卫星测绘应用中心北京100048 武汉大学资源与环境科学学院湖北武汉430079 江苏省地理信息资源开发与利用协同创新中心江苏南京210023

资源三号02星搭载了我国首台对地观测的卫星激光测高试验性载荷,对该载荷的精度进行了理论分析,并采用多个区域进行了实际精度验证,同时对其在航天测绘中的应用进行了试验。资源三号02星激光测高仪在平坦地区(坡度≤2°)的理论高程精度... 详细信息

资源三号02星搭载了我国首台对地观测的卫星激光测高试验性载荷,对该载荷的精度进行了理论分析,并采用多个区域进行了实际精度验证,同时对其在航天测绘中的应用进行了试验。资源三号02星激光测高仪在平坦地区(坡度≤2°)的理论高程精度为0.85m、平面精度14.2m。试验表明,资源三号02星激光测高仪获得的有效测高数据约占23.89%,检校场区域其高程精度为0.89m,平面精度为14.76m;华北地区高精度DSM地形数据验证其高程精度为1.09m,内陆渤海海面上的激光高程精度为0.47m。将激光足印点作为高程控制点时,在陕西渭南试验区能将资源三号02星立体影像无地面控制的高程精度从11.54m提高到1.90m。虽然资源三号02星激光测高仪为试验性载荷,但试验结果证实国产卫星激光测高数据能有效提高立体影像无地面控制的高程精度,在全球测图工程中具有推广应用价值,建议后续立体测图卫星搭载业务化应用的激光测高仪。

关键词：资源三号02星卫星激光测高精度分析全球测图