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| 1 | A new method for determination of satellite orbits by transfer显示文摘The original idea of a new method for determination of satellite orbits by transfer is from Two-Way Satellite Time and Frequency Transfer (TWSTFT). The original method is called 'determination of satellite orbit by transfer'. The method is not only for determination of satellite orbit but also for the time transfer with high accuracy and precision. The advantage is that the accuracy and the precision for determination of satellite orbit are very high and the new method is favorable for various applications. The combination of various signals disseminated and received forms various modes of satellite orbit determinations. If receivers at stations receive the own station-disseminated signals via a satellite transponder, it forms an orbit determination mode called 'receiving the own station-disseminated signals mode'. If receivers at all stations receive the signals disseminated from the master station via satellite transponders, it forms an orbit determination mode called 'receiving the master station-disseminated signals mode'. If all of receivers at stations receive all stations-disseminated signals via satellite transponders, it forms an orbit determination mode called 'receiving all stations-disseminated signals mode'. Also there are other combinations of signals for satellite orbit determination. For dif- ferent orbit determination modes with different signal combinations, their rigorous formulae of proc- essing are hereby presented in this paper. The accurate and the precise satellite orbit determination for both of the modes, 'receiving the own station-disseminated signals mode' and 'receiving the master station-disseminated signals mode' is attempted. It shows that the accuracy and precision for both of modes are nearly the same, the ranging accuracy is better than 1 cm, and the observation residuals of satellite orbit determination are better than 9 cm in the observation duration of 1 day. | LI ZhiGang YANG XuHai AI GuoXiang SI HuLi QIAO RongChuan FENG ChuGang | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，3： | 17 |
| 2 | Humification degrees of peat in Qinghai-Xizang Plateau and palaeoclimate change显示文摘In this article we report a new and sensitive palaeoclimate proxy indieator-humification degrees of peat. Based on the comparison of humification degrees with other climate proxy records, such as δ^13C time series of the C. mulieensis remains cellulose in the same peat profile, we suggest that humifieation degrees of peat in Qinghai-Xizang Plateau can served as a palaeoclimate proxy indicator. The higher the hnmification degrees of peat, the warmer-wetter the climate; on the contrary, the lower the humification degrees, the colder-drier the climate. Due to the simple method of deter-mination, humifieation degree of peat is worthy studying and applying further. | WANGHua HONGYetang ZHUYongxuan HONGBing LINQinghua XUHai LENGXuetian MAOXumei | 2004 | Chinese Science Bulletin2004，49，5： | 16 |
| 3 | Methods of rapid orbit forecasting after maneuvers for geostationary satellites显示文摘A geostationary(GEO) satellite may serve as a navigation satellite,but there is a problem that maneuvers frequently occur and the forces are difficult to model.Based on the technique of determining satellite orbits by transfer,a predicted orbit with high accuracy may be achieved by the method of statis-tical orbit determination in case of no maneuver force.The predicted orbit will soon be invalid after the maneuver starts,and it takes a long time to get a valid orbit after the maneuver ends.In order to improve ephemeris usability,the method of rapid orbit forecasting after maneuvers is studied.First,GEO satellite movement is analyzed in case of maneuvers based on the observation from the orbit meas-urement system by transfer.Then when a GEO satellite is in the free status just after maneuvers,the short arc observation is used to forecast the orbit.It is assumed that the common system bias and biases of each station are constant,which can be obtained from orbit determination with long arc observations.In this way,only 6 orbit elements would be solved by the method of statistical orbit determination,and the ephemeris with high accuracy may be soon obtained.Actual orbit forecasting with short arc observation for SINOSAT-1 satellite shows that,with the tracking network available,the precision of the predicted orbit(RMS of O-C) can reach about 5 m with 15 min arc observation,and about 3 m with 30 min arc observation. | YANG XuHai LI ZhiGang FENG ChuGang GUO Ji SHI HuLi AI GuoXiang WU FengLei QIAO RongChuan | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，3： | 10 |
| 4 | Preparation of highly conductive graphene-coated glass fibers by sol-gel and dip-coating method显示文摘In order to fabricate highly-conductive glass fibers using graphene as multi-functional coatings, we reported the preparation of graphene-coated glass fibers with high electrical conductivity through solgel and dip-coating technique in a simple way. Graphene oxide (GO) was partially reduced to graphene hydrosol, and then glass fibers were dipped and coated with the reduced GO (rGO). After repeated solgel and dip-coating treatment, the glass fibers were fully covered with rGO coatings, and consequently exhibited increased hydrophobicity and high electrical conductivity. The graphene-coated fibers exhibited good electrical conductivity of 24.9 S/cm, being higher than that of other nanocarbon-coated fibers and commercial carbon fibers, which is mainly attributed to the high intrinsic electrical conductivity of rGO and full coverage of fiber surfaces. The wettability and electrical conductivity of the coated fibers strongly depended on the dip-coating times and coating thickness, which is closely associated with coverage degree and compact structure of the graphene coatings. By virtue of high conductivity and easy operation, the graphene-coated glass fibers have great potential to be used as flexible conductive wires, highly-sensitive sensors, and multi-functional fibers in many fields. | Minghe Fang Xuhai Xiong Yabin Hao Tengxin Zhang Han Wang Hui-Ming Cheng You Zeng | 2019 | Journal of Materials Science & Technology2019，35，9： | 8 |
| 5 | Satellite orbit determination by transfer with differenced ranges显示文摘The original idea of orbit determination called 'determination of satellite orbit by transfer' was proposed by the National Time Service Center,Chinese Academy of Sciences.It shows that the system is very stable and the orbit determination accuracy is improved greatly.A new observation mode called 'differenced ranges between master station and slave stations by transfer' is introduced.It is the development of 'determination of satellite orbit by transfer'.In principle,the differenced ranges between master station and slave stations have a high angular resolution,and strongly constrains in the transverse direction of satellite orbit,perpendicular to the line-of-sight.The principle of 'differenced ranges between master station and slave stations by transfer' is discussed in detail.And differenced ranges in combination with ranging data were used to determine satellite's orbit and orbit prediction under different arc observations.It shows that orbit determination accuracy for orbit prediction can be improved with differenced ranges in combination with ranging data. | YANG Ying LI ZhiGang YANG XuHai FENG ChuGang CAO Fen | 2012 | Chinese Science Bulletin2012，57，36： | 2 |
| 6 | Research on Online Safety Precaution Technology of a High-medium Pressure Gas Regulator显示文摘In view of some of the characteristics of a high-medium pressure gas regulator, such as small fault samples, many fault types and complex fault features etc, in order to improve the accuracy of fault precaution in this paper, a fault diagnosis method based on the combination of the improved wavelet packet and pressure harmonic distortion rate is proposed. On the basis of the harmonic distortion rate of the outlet pressure and the energy value of each frequency band obtained by improved wavelet packet decomposition, the rules for fault data were summarized. Finally, a safety precaution model of the high-medium pressure gas regulator is established. | HAO Xuejun LIU Xuhai LI Xiaxi ZHAO Xin | 2017 | Journal of Thermal Science2017，26，3： | 2 |
| 7 | Cure kinetics and thermal properties of novel bismaleimide containing phthalide cardo structure显示文摘 | Xuhai Xiong Ping Chen Jinxiang Zhang Qi Yu Baichen Wang | 2010 | Thermochimica Acta2010，，1： | 1 |
| 8 | Cure mechanism and thermal properties of the phthalide-containing bismaleimide/epoxy system显示文摘 | Xuhai Xiong Ping Chena Rong Ren | 2013 | Thermochimica Acta2013，559，： | 1 |
| 9 | Numerical analysis of diffusion process of flammable and toxicgasesdis charging accident显示文摘 | Pan Xuhai Jiang Juncheng Wang Zhirong etal | 2000 | Progressin Safety Science and Tevhonlogy2000，，： | 1 |
| 10 | Satellite orbit determination combining C-band ranging and differenced ranges by transfer显示文摘The constraint in the transverse direction of satellite orbit with differenced ranges between master station and slave stations by transfer as an angular observation data is explained in theory. Differenced ranges in combination with C-band ranging by transfer were used in satellite orbit determination. The position error of overlapped orbit differences for combining is less than that for ranging only. The residual of predicted orbit forward 5.5 days for combining is 3.1762 m, while the residual for ranging only with the same duration is 3.5380 m. Both the orbital overlapping and orbit prediction experimentations can testify the constraint in the transverse direction of satellite orbit with differenced ranges, and the results show that the accuracy of orbit determination and orbit prediction is improved by combining differenced ranges and C-band ranging. | YANG Ying YANG XuHai LI ZhiGang FENG ChuGang | 2013 | Chinese Science Bulletin2013，58，19： | 1 |
| 11 | Comparison of chromium nitride coatings deposited by DC and RF magnetron sputtering显示文摘 | Shuyong Tan Xuhai Zhang Xiangjun Wu Feng Fang Jianqing Jiang | 2010 | Thin Solid Films2010，，7： | 1 |
| 12 | Geostationary orbit determination using SATRE显示文摘 | Hui Lei ZhiGang Li XuHai Yang WenJun Wu Xuan Cheng Ying Yang ChuGang Feng | 2011 | Advances in Space Research2011，，5： | 1 |
| 13 | Effect of carbon on TiAlCN coatings deposited by reactive magnetron sputtering显示文摘 | Zhang Xuhai Jiang Jiangqing Zeng Yuqiao | 2008 | Surface and Coatings Technology2008，203，57： | 1 |
| 14 | Numerical analysis of diffusion process of flammable and toxic gases discharging accident显示文摘 | PAN Xuhai JIANG Juncheng WANG Zhirong | 2000 | Progress in Safety Science and Technology2000，，： | 1 |
| 15 | Effect of Substrate Biaa and Temperature on Magnetron Sputtered CrSiN Films显示文摘 | Tan Shuyong Zhang Xuhai Wu Xiangjun | | 0，，： | 1 |
| 16 | An experimental study of the liquid water saturation level in the cathode gas diffusion layer of a PEM fuel cell显示文摘 | Xuhai Wang Trung Van Nguyen | 2011 | Journal of Power Sources2011，，： | 1 |
| 17 | Hydroxyl Radical-Stressed Whey Protein Isolate: Functional and Rheological Properties显示文摘 | Baohua Kong Youling L. Xiong Xuhai Cui Xinhuai Zhao | 2013 | Food and Bioprocess Technology2013，，1： | 1 |
| 18 | Fabrication and characterization of polymer composites surface coated F e3 O 4/ MWCNT s hybrid buckypaper as a novel microwave‐absorbing structure显示文摘 | Shaowei Lu Keming Ma Xiaoqiang Wang Xuhai Xiong Weikai Xu Caixia Jia | 2015 | J. Appl. Polym. Sci2015，，： | 1 |
| 19 | Crack coalescence between two non-parallel flaws in rock-like material under uniaxial compression显示文摘 | Xiao-Ping Zhang Quansheng Liu Shunchuan Wu Xuhai Tang | 2015 | Engineering Geology2015，，： | 1 |
| 20 | Hydroxyl Radical-Stressed Whey Protein Isolate: Chemical and Structural Properties显示文摘 | Xuhai Cui Youling Xiong Baohua Kong Xinhuai Zhao Ning Liu | 2012 | Food and Bioprocess Technology2012，，6： | 1 |
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