Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Yuanxi Yang"'
Autor:
Chen Zhao, Zhouyang Tian, Qiang Zhang, Yinghui Wang, Peng Zhang, Guodong Sun, Yuanxi Yang, Ding He, Shuxin Tu, Junjian Wang
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 19, Pp n/a-n/a (2024)
Abstract Black carbon (BC) is a highly persistent yet poorly understood component of forest soil carbon reservoirs, while its inventory, distribution, and determining factors in forest soils on a large geographic scale remain unclear. Here, we charac
Externí odkaz:
https://doaj.org/article/76f82fd12d824624bc5c2468f6d7415c
Publikováno v:
Satellite Navigation, Vol 5, Iss 1, Pp 1-9 (2024)
Abstract A Low Earth Orbit (LEO) constellation augmenting satellite navigation is important in the future development of Global Navigation Satellite System (GNSS). GNSS augmented by LEO constellations can improve not only the accuracy of Positioning,
Externí odkaz:
https://doaj.org/article/8c87ed054f4c4d64a56f637e200b297b
Publikováno v:
Journal of Geodesy and Geoinformation Science, Vol 6, Iss 4, Pp 3-12 (2023)
Aerospace surveying and mapping has become the main method of global earth observation. It can be divided into the geodetic observation satellites and the topographic surveying satellites according to the disciplines. In this paper, the geodetic sate
Externí odkaz:
https://doaj.org/article/4afd0b33586a4ffa8200941cb3c2447a
Publikováno v:
Satellite Navigation, Vol 4, Iss 1, Pp 1-11 (2023)
Abstract The timescales incorporated into the Primary Frequency Standard (PFS) exhibit excellent stability and accuracy. However, during the dead time of PFS, the reliability of the timescale can be compromised. To address this issue, a resilient tim
Externí odkaz:
https://doaj.org/article/19b06b0f12ba43fdb3454704f9043df8
Publikováno v:
Satellite Navigation, Vol 3, Iss 1, Pp 1-9 (2022)
Abstract Within the framework of differential augmentation, this paper introduces the basic technical framework and performance of the BeiDou Global Navigation Satellite System (BDS-3) Satellite-Based Augmentation System (BDSBAS), including orbit pro
Externí odkaz:
https://doaj.org/article/9b4e531940054878b921426207d6897e
Publikováno v:
Remote Sensing, Vol 15, Iss 8, p 2036 (2023)
BeiDou Global Navigation Satellite System (BDS-3) broadcasts multifrequency signals that offer more choices of frequencies and more signal combinations for positioning. This paper analyzes the effect of timing group delay (TGD) and differential code
Externí odkaz:
https://doaj.org/article/127fdea685fb40a48cc66123145c8bdf
Autor:
Wenjin Guo, Juxiong Liu, Yuanxi Yang, He Ma, Qian Gong, Xingchi Kan, Xin Ran, Yu Cao, Jianfa Wang, Shoupeng Fu, Guiqiu Hu
Publikováno v:
Poultry Science, Vol 100, Iss 1, Pp 348-356 (2021)
Heat stress (HS) in summer will seriously affect the health and performance of dairy cows. To alleviate the injury to dairy cows caused by HS, we added the rumen-bypassed tributyrin to the feed. We determined whether cows were in a heat-stressed envi
Externí odkaz:
https://doaj.org/article/9d3fe761439e462f9e3649ef730fa940
Publikováno v:
Satellite Navigation, Vol 1, Iss 1, Pp 1-8 (2020)
Abstract The core performance elements of global navigation satellite system include availability, continuity, integrity and accuracy, all of which are particularly important for the developing BeiDou global navigation satellite system (BDS-3). This
Externí odkaz:
https://doaj.org/article/f28dfac5ace6468e894bf5ec643a197e
Publikováno v:
Crystals, Vol 13, Iss 1, p 34 (2022)
The mechanical hysteresis loop behavior always limits the applicability of shape memory alloys (SMAs) in mechanical devices requiring high sensitivity, durability and energy conversion efficiency. In this study, through experiments and finite element
Externí odkaz:
https://doaj.org/article/57a7c687cfd145f78aa31c4dabdd380b
Autor:
Yuanxi YANG
Publikováno v:
Journal of Geodesy and Geoinformation Science, Vol 2, Iss 3, Pp 1-7 (2019)
The concept of resilient positioning, navigation and timing (PNT) is described. The definition of resilient PNT is given, the relationship between integrated (or comprehensive) PNT and resilient PNT is analyzed, and it is pointed out that the integra
Externí odkaz:
https://doaj.org/article/3878ea6ed5a343abb32a7b6f31d77231