scholarly journals Determination of the Equatorial Electron Differential Flux From Observations at Low Earth Orbit

2018 ◽  
Vol 123 (11) ◽  
pp. 9574-9596 ◽  
Author(s):  
Hayley J. Allison ◽  
Richard B. Horne ◽  
Sarah A. Glauert ◽  
Giulio Del Zanna
Keyword(s):  
Low Earth Orbit ◽  
Earth Orbit ◽  
Differential Flux

scholarly journals Orbit Propagation and Determination of Low Earth Orbit Satellites

2014 ◽  
Vol 2014 ◽  
pp. 1-12 ◽  
Author(s):  
Ho-Nien Shou
Keyword(s):  
Kalman Filter ◽  
Real Time ◽  
Unscented Kalman Filter ◽  
Estimation Method ◽  
Nonlinear Problems ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Positioning Accuracy ◽  
Orbit Propagation

This paper represents orbit propagation and determination of low Earth orbit (LEO) satellites. Satellite global positioning system (GPS) configured receiver provides position and velocity measures by navigating filter to get the coordinates of the orbit propagation (OP). The main contradictions in real-time orbit which is determined by the problem are orbit positioning accuracy and the amount of calculating two indicators. This paper is dedicated to solving the problem of tradeoffs. To plan to use a nonlinear filtering method for immediate orbit tasks requires more precise satellite orbit state parameters in a short time. Although the traditional extended Kalman filter (EKF) method is widely used, its linear approximation of the drawbacks in dealing with nonlinear problems was especially evident, without compromising Kalman filter (unscented Kalman Filter, UKF). As a new nonlinear estimation method, it is measured at the estimated measurements on more and more applications. This paper will be the first study on UKF microsatellites in LEO orbit in real time, trying to explore the real-time precision orbit determination techniques. Through the preliminary simulation results, they show that, based on orbit mission requirements and conditions using UKF, they can satisfy the positioning accuracy and compute two indicators.

Real-time orbit determination of Low Earth orbit satellite based on RINEX/DORIS 3.0 phase data and spaceborne GPS data

2020 ◽  
Vol 66 (7) ◽  
pp. 1700-1712
Author(s):  
Chongchong Zhou ◽  
Shiming Zhong ◽  
Bibo Peng ◽  
Jikun Ou ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Real Time ◽  
Orbit Determination ◽  
Low Earth Orbit ◽  
Gps Data ◽  
Earth Orbit ◽  
Orbit Satellite ◽  
Low Earth Orbit Satellite ◽  
Phase Data

Determination of Differential Code Bias of GNSS Receiver Onboard Low Earth Orbit Satellite

2016 ◽  
Vol 54 (8) ◽  
pp. 4896-4905 ◽  
Author(s):  
Jiahao Zhong ◽  
Jiuhou Lei ◽  
Xinan Yue ◽  
Xiankang Dou
Keyword(s):  
Low Earth Orbit ◽  
Earth Orbit ◽  
Differential Code Bias ◽  
Gnss Receiver ◽  
Orbit Satellite ◽  
Low Earth Orbit Satellite ◽  
Code Bias

GPS-Based Real-Time Orbit Determination of Low Earth Orbit Satellites Using Robust Unscented Kalman Filter

2017 ◽  
Vol 30 (6) ◽  
pp. 04017063
Author(s):  
Mahmut Onur Karslioglu ◽  
Eren Erdogan ◽  
Onur Pamuk
Keyword(s):  
Kalman Filter ◽  
Real Time ◽  
Orbit Determination ◽  
Unscented Kalman Filter ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Low Earth Orbit Satellites

scholarly journals PPP-method realization for the determination of Low Earth Orbit Satellite motion parameters using on-board GPS-observations

2017 ◽  
Vol 0 (1) ◽  
pp. 15-19
Author(s):  
Алексей Александрович Жалило ◽  
Александр Иванович Яковченко
Keyword(s):  
Low Earth Orbit ◽  
Earth Orbit ◽  
Satellite Motion ◽  
Orbit Satellite ◽  
Low Earth Orbit Satellite ◽  
Motion Parameters ◽  
Gps Observations

APPLICATION ISSUES OF SPACE INFORMATION FACILITIES FOR SPACE OBJECTS MONITORING

2018 ◽  
pp. 85-89
Author(s):  
V. D. Shilin ◽  
V. N. Lagutkin ◽  
A. P. Lukyanov ◽  
A. M. Starostenko ◽  
M. M. Ibragimov
Keyword(s):  
Image Processing ◽  
Orbit Space ◽  
Computer Models ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Space Systems ◽  
Space Objects ◽  
And Control

Complex of computer models for study of effectiveness of application of space information facilities was developed for solution the tasks of orbits monitoring and space objects recognition. It is shown, that space information facilities provide minimal breaks in observations and can make a significant informational contribution to the solution of the problem of reducing the required time of orbits determination of space objects, including maneuvering ones on both low and high orbits. Comparative assessments of required time for estimation of space objects orbits parameters for various orbits of space information facilities were obtained. It is also shown, that space systems allow carrying out recognition and control of space objects state more effectively, due to the possibility of their observation from short distances in the optical waveband. Methods of space objects image processing are developed and estimates of their effectiveness are presented. Proposals are given for use of small spacecrafts for monitoring low-Earth-orbit space objects when flying on cross courses.

scholarly journals Reducing influence of gravity model error in precise orbit determination of low Earth orbit satellites

2007 ◽  
Vol 10 (2) ◽  
pp. 105-110
Author(s):  
Jinlai Guo ◽  
Min Hu ◽  
Qile Zhao ◽  
Daoyu Guo
Keyword(s):  
Gravity Model ◽  
Orbit Determination ◽  
Precise Orbit Determination ◽  
Model Error ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Precise Orbit ◽  
Low Earth Orbit Satellites
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