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| 1 | Research on Key Technologies of Precise InSAR Surveying and Mapping Applications Using Automatic SAR Imaging显示文摘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. | Xinming TANG Tao LI Xiaoming GAO Qianfu CHEN Xiang ZHANG | 2019 | Journal of Geodesy and Geoinformation Science2019,2,2: | 20 |
| 2 | Haze insights and mitigation in China: An overview显示文摘The present article provides an overview of the chemical and physical features of haze in China, focusing on the relationship between haze and atmospheric fine particles, and the formation mechanism of haze. It also summarizes several of control technologies and strategies to mitigate the occurrence of haze. The development of instruments and the analysis of measurements of ambient particles and precursor concentrations have provided important information about haze formation. Indeed, the use of new instruments has greatly facilitated current haze research in China. Examples of insightful results include the relationship between fine particles and haze, the chemical compositions and sources of particles, the impacts of the aging process on haze formation, and the application of technologies that control the formation of haze. Based on these results, two relevant issues need to be addressed: understanding the relationship between haze and fine particles and understanding how to control PM2.5. | Xuliang Zhuang Yuesi Wang Hong He Jianguo Liu Xinming Wang Tingyu Zhu Maofa Ge Ju Zhou Guiqian Tang Jinzhu Ma | 2014 | Journal of Environmental Sciences2014,26,1: | 12 |
| 3 | Design of variable screw pitch rib snapping roller and residue cutter for corn harvesters显示文摘The blocking between two snapping rollers will seriously constrict the harvesting efficiency for corn harvester.A variable screw pitch rib snapping roller was developed to solve this problem.The comparative experiment between fixed screw pitch rib snapping rollers and variable screw pitch rib snapping rollers illustrated that variable screw pitch ribs can avoid corn-stalk blocking effectively,and it can improve working efficiency by 56.7%.Conservation tillage with standing corn residue was testified that it had a strong control of soil wind erosion.In order to implement this mode of conservation tillage at a production scale,a cutter was developed in this study.Subsequently,two experiments were conducted,one was to test the cutting ratio(defined as the totally cut off stalk population divided by total stalk population),and the other one was to test standing-residue height.The experiment results showed that the mean cutting ratio increased significantly(p<0.05)along with increasing height of cutter-head above the ground(cutting height);the cutting ratio’s mean value increased significantly(p<0.05)along with the decreasing angle between the cutter-head and the ground(cutting angle).The average standing-residue height increased along with the increase of cutting height from 300 mm to 500 mm.The average standing-residue height increased significantly(p<0.05)along with the decrease of cutting angle from 15°to 0°.Therefore,the newly designed snapping roller can improve the harvesting efficiency and prolong the working life of the cutting table;and the cutter can promote the popularization of the conservation tillage with standing corn residue in Northeast China. | Wang Gang Jia Honglei Tang Lie Zhuang Jian Jiang Xinming Guo Mingzhuo | 2016 | International Journal of Agricultural and Biological Engineering2016,9,1: | 6 |
| 4 | Influence of Range Gate Width on Detection Probability and Ranging Accuracy of Single Photon Laser Altimetry Satellite显示文摘The influence of the single photon laser altimeter range-gate width on the detection probability and ranging accuracy is discussed and analyzed,according to the LiDAR equation,single photon detection equation and the Monte Carlo method to simulate the experiment.The simulated results show that the probability of detection is not affected by the range gate,while the probability of false alarm is relative to the gate width.When the gate width is 100 ns,the ranging accuracy can accord with the requirements of satellite laser altimeter.But when the range gate width exceeds 400 ns,ranging accuracy will decline sharply.The noise ratio will be more as long as the range gate to get larger,so the refined filtering algorithm during the data processing is important to extract the useful photons effectively.In order to ensure repeated observation of the same point for 25 times,we deduce the quantitative relation between the footprint size,footprint,and frequency repetition according to the parameters of ICESat-2.The related conclusions can provide some references for the design and the development of the domestic single photon laser altimetry satellite. | Guoyuan LI Fanghong YE Xinming TANG Dongping XIE Jiapeng HUANG Genhua HUANG | 2020 | Journal of Geodesy and Geoinformation Science2020,3,2: | 4 |
| 5 | Effect of pulsatile perfusion during cardiopulmonary bypass in terms of radial artery sphygmogram显示文摘OBJECTIVE: To investigate a quantitative method for using radial artery pulse waveforms to assess the effect of pulsatile flow during cardiopulmonary bypass(CPB).METHODS: A total of 34 adults with heart disease who underwent open-heart surgery between April2010 and January 2011 were randomized into a pulsatile perfusion group(n=17) and a non-pulsatile perfusion group(n=17). Radial arterial pulse waveforms of pulsatile and non-pulsatile perfusion patients were observed and compared before and during CPB.RESULTS: No pulse waveform could be detected at patients' radial artery in both groups when the aorta was cross-clamped. Pulse waveforms could be detected at pulsatile perfusion patients' radial artery, but could not be detected at non-pulsatile perfusion patients' radial artery during CPB. Additionally, patients' pulse waveforms during pulsatile perfusion were lower than those before the operation.CONCLUSION: Our findings indicate that radial artery sphygmogram can be used as a valid indicator to evaluate the effectiveness of pulsatile perfusion during CPB. | Zhifeng Zhang Jiatuo Xu Enyuan Zhu Qi Zhang Lu Yu Yongbing Qiu Jianguo Tang Zhaofu Fei Xin Li Liping Tu Chouping Han Ying Liu Zhen Guo Changle Zhou Meiyu Shi Yingxin Qian Yimin Bao Xinming Ji | 2014 | Journal of Traditional Chinese Medicine2014,34,6: | 2 |
| 6 | Overview of the key technologies for high-resolution satellite mapping显示文摘As the important infrastructures for land mapping and resource monitoring,highresolution remote sensing satellites(HRSS)are urgently demanded for the development of China.In this article,the key technologies of the main HRSS are summarized,and these technologies include sensor design,attitude and orbit determination,geometric calibration,imaging model construction,and block adjustment,etc.,which involve the mapping accuracy of HRSS.Finally,the system design of the ZY-3 Satellite(China’s first civil stereoscopic surveying and mapping satellite,to be launched in 2012)is introduced,which mainly include satellite technical specifications and strategies design based on these key technologies research. | Xinming Tang Junfeng Xie | 2012 | International Journal of Digital Earth2012,5,3: | 2 |
| 7 | Persistent organic pollutants in environment of the Pearl River Delta, China: an overview显示文摘 | Jiamo Fu Bixian Mai Guoying Sheng Gan Zhang Xinming Wang Ping’an Peng Xianming Xiao Rong Ran Fanzhong Cheng Xianzhi Peng Zhishi Wang U Wa Tang | 2003 | Chemosphere2003,,9: | 2 |
| 8 | Persistent organic pollutants in environment of the Pearl River Delta, China: an overview显示文摘 | Jiamo Fu Bixian Mai Guoying Sheng Gan Zhang Xinming Wang Ping’an Peng Xianming Xiao Rong Ran Fanzhong Cheng Xianzhi Peng Zhishi Wang U Wa Tang | 2003 | Chemosphere2003,,9: | 2 |
| 9 | Fuzzy Comprehensive Evaluation Method and Its Application in Subjective Quality Assessment for Compressed Remote Sensing Images显示文摘 | Zhai Liang Tang Xinming | 2007 | Fuzzy Systems and Knowledge Discovery2007,,8: | 1 |
| 10 | Fuzzy Comprehensive Evaluation Method and Its Application in Subjective Quality Assessment for Compressed Remote Sensing Images显示文摘 | Liang Zhai Xinming Tang | 2007 | Fuzzy Systems and Knowledge Discovery2007,,8: | 1 |
| 11 | Phase transformation in Mg-8Gd-4Y-Nd-Zr aUoy显示文摘 | ZHANG Xinming TANG Changping DENG Yunlai | 2011 | Journal of Alloys and Compounds2011,509,21: | 1 |
| 12 | Triple linear-array image geometry model of ZiYuan-3 surveying satellite and its validation显示文摘 | Xinming Tang Guo Zhang Xiaoyong Zhu Hongbo Pan Yonghua Jiang Ping Zhou Xia Wang | 2013 | International Journal of Image and Data Fusion2013,,1: | 1 |
| 13 | Large pyroelectric response in relaxor-based ferroelectric (1-x)Pb (Mg1/3Nb2/3)O3-xPbTiO2 single crystals显示文摘 | Tang Yanxue Wan Xinming Zhao Xiangyong | 2005 | J Appl Phys2005,98,08: | 1 |
| 14 | Effects of Si addition on microstructure and mechanical properties of Mg–8Gd–4Y–Nd–Zr alloy显示文摘 | Xinming Zhang Jilong Hu Lingying Ye Yunlai Deng Changping Tang Liu Yang Zhaoyang Liu | 2013 | Materials and Design2013,,: | 1 |
| 15 | Topological relations between fuzzy regions in a fuzzy topological space显示文摘 | Xinming Tang Wolfgag Kainz Hongyan Wang | 2010 | International Journal of Applied Earth Observation and Geoinformation2010,,12: | 1 |
| 16 | Overview of the key technologies for high-resolution satellite mapping显示文摘 | TANG Xinming XIE Junfeng | 2012 | Int J Digital Earth2012,5,3: | 1 |
| 17 | An epipolythiodioxopiperazine alkaloid and diversified aromatic polyketides with cytotoxicity from the Beibu Gulf coral-derived fungus Emericella nidulans GXIMD 02509显示文摘Marine microorganisms,especially marine fungi,have historically proven their value as a prolific source for structurally novel and pharmacologically active secondary metabolites(Deshmukh et al.,2018;Carroll et al.,2022).The corals constitute a dominant part of reefs with the highest biodiversity,and harbor highly diverse and abundant microbial symbionts in their tissue,skeleton,and mucus layer,with species-specific core members that are spatially partitioned across coral microhabitats(Wang WQ et al.,2022).The coral-associated fungi were very recently found to be vital producers of structurally diverse compounds,terpenes,alkaloids,peptides,aromatics,lactones,and steroids. | Miaoping LIN Zhenzhou TANG Jiaxi WANG Humu LU Chenwei WANG Yanting ZHANG Xinming LIU Chenghai GAO Yonghong LIU Xiaowei LUO | 2023 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2023,24,3: | 1 |
| 18 | Texture decomposition with particle swarm optimization method显示文摘 | TANG Jianguo ZHANG Xinming DENG Yunlai | 2006 | Computational Materials Science2006,38,2: | 1 |
| 19 | Comparison between Plane and Stereo Block Adjustment for ZY-3 Satellite Images显示文摘Block adjustment for satellite images cannot be solved with weak convergence geometric conditions,therefore a plane block adjustment method to improve the targeting precision of images is proposed utilizing DEM as height constraint plane block adjustment method.First,a rational function model with affine transformation is selected as the mathematical model of the satellite image plane block adjustment.Second,to update the ground coordinates of tie points(TPs),the plane coordinates of TPs are only solved in the adjustment process.Elevation values are obtained by using DEM interpolation.Finally,the plane coordinates of all TPs and orientation parameters of all satellite images are solved through plane block adjustment with a few ground control points ZY-3 nadir images for two regions are tested for plane block adjustment while ZY-3 forward-nadir-back images of the same two regions are tested for stereo block adjustment.A comparison indicates that almost the same accuracy can be obtained with plane block adjustment support using a 1∶50 000 DEM and stereo block adjustment for ZY-3 images.For ZY-3 nadir images,almost no loss of plane block adjustment accuracy occurred when global DEM with 1 km grid and SRTM with 90 m grid replaced the 1∶50 000 DEM as elevation control,.Test results demonstrate the effectiveness and feasibility of the plane block adjustment method. | Taoyang WANG Guo ZHANG Deren LI Wanshou JIANG Xinming TANG Xuelin LIU | 2018 | Journal of Geodesy and Geoinformation Science2018,1,1: | 1 |
| 20 | The Austrian node of the natural resources satellite remote sensing cloud service platform:examples of Sino-Austrian cooperation显示文摘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,Austria.Under 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 research.So far,nearly 500 GB of data have been uploaded to the server.This technical note briefly introduces the ZY-3 system and illustrates the implementation of the agreement by the first China-Sat Workshop and several case studies.Some of them are already completed,others are still ongoing.They 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 Austria.An 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. | Wolfgang Kainz Xinming Tang Yucai Xue | 2021 | Geo-Spatial Information Science2021,24,1: | 1 |