Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Fangjun Qin"'
Publikováno v:
Geodesy and Geodynamics, Vol 15, Iss 4, Pp 366-378 (2024)
With the gradual development and modernization of satellite navigation systems, using observation information from multi-GNSS has become one of the hot-spot issues in recent years. Multi-system loose combinations form double-difference observation eq
Externí odkaz:
https://doaj.org/article/8555cd816ef54312b1cdbfb33ed330c5
Publikováno v:
Applied Sciences, Vol 14, Iss 16, p 7062 (2024)
This study examines parameter optimization for magneto-optical traps (MOTs) to increase trapping efficiency and improve cold atom interferometer performance. Operational principles of MOTs, control parameters, and performance metrics such as volume,
Externí odkaz:
https://doaj.org/article/8fe3b8df9a504de4b73db05b42f4cd6f
Publikováno v:
Photonics, Vol 11, Iss 4, p 298 (2024)
To achieve high-frequency stability on the external cavity diode laser (ECDL), a 780 nm ECDL serves as the seed light source, and its frequency is precisely locked to the saturated absorption peak of rubidium (Rb) atoms using modulation transfer spec
Externí odkaz:
https://doaj.org/article/ebc1a46919034f0b8b6fce7bab8ae3d5
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 2, p 302 (2024)
The marine atomic interferometric gravimeter is a vital precision instrument for measuring marine geophysical information, which is widely used in mineral resources exploration, military applications, and missile launches. In practical measurements,
Externí odkaz:
https://doaj.org/article/7cdd589e625648ff848a60d8f8a3211f
Autor:
Yang Zhou, Wenzhang Wang, Guiguo Ge, Jinting Li, Danfang Zhang, Meng He, Biao Tang, Jiaqi Zhong, Lin Zhou, Runbing Li, Ning Mao, Hao Che, Leiyuan Qian, Yang Li, Fangjun Qin, Jie Fang, Xi Chen, Jin Wang, Mingsheng Zhan
Publikováno v:
Sensors, Vol 24, Iss 3, p 1016 (2024)
A dynamic gravimeter with an atomic interferometer (AI) can perform absolute gravity measurements with high precision. AI-based dynamic gravity measurement is a type of joint measurement that uses an AI sensor and a classical accelerometer. The coupl
Externí odkaz:
https://doaj.org/article/1d080cf12e85425bba3d3051a0704d35
Publikováno v:
Applied Sciences, Vol 14, Iss 1, p 308 (2023)
The frequency stability of free-running lasers is susceptible to the influence of environmental factors, which cannot meet the long-term frequency stabilization requirements for atom interferometry precision measurements. To obtain a frequency-stabil
Externí odkaz:
https://doaj.org/article/d4749ce7687c4af2ba2fd65ec5b803dd
Publikováno v:
Applied Sciences, Vol 13, Iss 15, p 8774 (2023)
After more than 30 years of development, the measurement performance of atom gravimeters in the laboratory has reached a high level. More and more compact, small, portable instruments begin to appear, and field measurements have been conducted gradua
Externí odkaz:
https://doaj.org/article/cee8b7bab41e44b7a3393ee13a761540
Publikováno v:
Sensors, Vol 23, Iss 7, p 3535 (2023)
Atomic gravimeter has been more frequently applied under complex and dynamic environments, but its measurement accuracy is seriously hampered by vibration-induced noise. In this case, vibration compensation provides a way to enhance the accuracy of g
Externí odkaz:
https://doaj.org/article/d722123b2c6445a38062c40eae8a633c
Publikováno v:
Sensors, Vol 22, Iss 20, p 7742 (2022)
In response to the lack of specific demonstration and analysis of the research on the necessity of the Lie group strapdown inertial integrated navigation error model based on the Euler angle, two common integrated navigation systems, strapdown inerti
Externí odkaz:
https://doaj.org/article/d2f16e96e50443a28c6b9210282ed757
Publikováno v:
Sensors, Vol 22, Iss 10, p 3792 (2022)
As an important means of underwater navigation and positioning, the accuracy of SINS/DVL integrated navigation system greatly affects the efficiency of underwater work. Considering the complexity and change of the underwater environment, it is necess
Externí odkaz:
https://doaj.org/article/f7cc007c63474655b97aacb58a8127d8