Results 21 to 30 of about 202,602 (307)

Orbit Determination Using Angle-Only Data for MEO & GEO Satellite and Obsolete [PDF]

Journal of Astronomy and Space Sciences, 2009
We used an optical observation system with a 0.6m wide-field telescope and 5 computers system in KASI (Korean Astronomy and Space Science Institute) for satellite optical observation.
Jin Choi, Bang-Yeop Kim, Hong-Suh Yim, Heon-Young Chang, Joh-Na Yoon, Myung-Jing Kim, Ok-Jun Hwang   +6 more
doaj   +1 more source

Conductance measurement of spin-orbit coupling in the two-dimensional electron systems with in-plane magnetic field [PDF]

, 2016
We consider determination of spin-orbit (SO) coupling constants for the two-dimensional electron gas from measurements of electric properties in rotated in-plane magnetic field.
Kolasiński, K., Sellier, H., Szafran, B.   +2 more
core   +2 more sources

Sensitivity of the Gravity Model and Orbital Frame for On-board Real-Time Orbit Determination: Operational Results of GPS-12 GPS Receiver

Remote Sensing, 2019
This paper describes the sensitivity of both the orbital frame domain selection and the gravity model on the performance of on-board real-time orbit determination.
Eunhyouek Kim, Seungyeop Han, Amer Mohammad Al Sayegh   +2 more
doaj   +1 more source

Shadowing Lemma and Chaotic Orbit Determination

, 2015
Orbit determination is possible for a chaotic orbit of a dynamical system, given a finite set of observations, provided the initial conditions are at the central time.
Milani, Andrea, Spoto, Federica
core   +1 more source

Effect of lunar gravity models on Chang'E-2 orbit determination using VLBI tracking data

Geodesy and Geodynamics, 2016
The precise orbit determination of Chang'E-2 is the most important issue for successful mission and scientific applications, while the lunar gravity field model with big uncertainties has large effect on Chang'E-2 orbit determination.
Erhu Wei, Xuechuan Li, Shuanggen Jin, Jingnan Liu   +3 more
doaj   +1 more source

Uncertainty Analysis of the Short-Arc Initial Orbit Determination

IEEE Access, 2020
The solution of the short-arc angles-only orbit determination problem has large uncertainty because the topocentric range is not observable. For a certain angular observation tracklet with measurement noise, there exist numerous potential orbits, all of ...
Xuefeng Tao, Zhi Li, Qiuwu Gong, Yasheng Zhang, Ping Jiang   +4 more
doaj   +1 more source

Experimental study on the precise orbit determination of the BeiDou navigation satellite system. [PDF]

Sensors (Basel), 2013
He L, Ge M, Wang J, Wickert J, Schuh H.
europepmc   +2 more sources

Correction Method for the Observed Global Navigation Satellite System Ultra-Rapid Orbit Based on Dilution of Precision Values

Sensors, 2018
For ultra-rapid orbits provided by the Global Navigation Satellite System (GNSS), the key parameters, accuracy and timeliness, must be taken into consideration in real-time and near real-time applications.
Qianxin Wang, Chao Hu, Ya Mao
doaj   +1 more source

Research on the Rotational Correction of Distributed Autonomous Orbit Determination in the Satellite Navigation Constellation

Remote Sensing, 2022
The autonomous orbit determination of the navigation constellation uses only bidirectional ranging data of the inter-satellite link for data processing.
Wei Zhou, Hongliang Cai, Ziqiang Li, Chengpan Tang, Xiaogong Hu, Wanke Liu   +5 more
doaj   +1 more source

Non-Cooperative LEO Satellite Orbit Determination Using Single Station for Space-Based Opportunistic Positioning

Remote Sensing
Space-based opportunistic positioning is a crucial component of resilient positioning, navigation, and timing (PNT) systems, and it requires the acquisition of orbit information for non-cooperative low Earth orbit (LEO) satellites.
Ruofan Deng, Honglei Qin, Yu Zhang
doaj   +1 more source