Results 21 to 30 of about 7,371 (263)

Research on the Effectiveness of Different Estimation Algorithm on the Autonomous Orbit Determination of Lagrangian Navigation Constellation

International Journal of Aerospace Engineering, 2016
The accuracy of autonomous orbit determination of Lagrangian navigation constellation will affect the navigation accuracy for the deep space probes. Because of the special dynamical characteristics of Lagrangian navigation satellite, the error caused by ...
Youtao Gao, Junkang Chen, Bo Xu, Jianhua Zhou   +3 more
doaj   +1 more source

Initial Orbit Determination from Only Heading Measurements

Journal of Spacecraft and Rockets, 2023
This work introduces the problem of initial orbit determination (IOD) from only heading measurements. Such a problem occurs in practice when estimating the orbit of a spacecraft using visual odometry measurements from an optical camera. After reviewing the problem geometry, a simple solution is developed in the form of an iterative scheme on the ...
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A More Reliable Orbit Initialization Method for LEO Precise Orbit Determination Using GNSS [PDF]

Remote Sensing, 2020
Precise orbit determination (POD) using GNSS has been rapidly developed and is the mainstream technology for the navigation of low Earth orbit (LEO) satellites. The initialization of orbit parameters is a key prerequisite for LEO POD processing. For a LEO satellite equipped with a GNSS receiver, sufficient discrete kinematic positions can be obtained ...
Gong, Xuewen, Sang, Jizhang, Wang, Fuhong, Li, Xingxing   +3 more
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Precise Orbit Determination for BeiDou GEO/IGSO Satellites during Orbit Maneuvering with Pseudo-Stochastic Pulses

Remote Sensing, 2019
In order to provide better service for the Asia-Pacific region, the BeiDou navigation satellite system (BDS) is designed as a constellation containing medium earth orbit (MEO), geostationary earth orbit (GEO), and inclined geosynchronous orbit (IGSO ...
Zhiwei Qin, Guanwen Huang, Qin Zhang, Le Wang, Xingyuan Yan, Shichao Xie, Yu Cao, Xiaolei Wang   +7 more
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Direct Initial Orbit Determination

IEEE Transactions on Aerospace and Electronic Systems
Initial orbit determination (IOD) is an important early step in the processing chain that makes sense of and reconciles the multiple optical observations of a resident space object. IOD methods generally operate on line-of-sight (LOS) vectors extracted from images of the object, hence the LOS vectors can be seen as discrete point samples of the raw ...
Chee-Kheng Chng, Trent Jansen-Sturgeon, Timothy Payne, Tat-Jun Chin   +3 more
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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

Perturbed initial orbit determination

Astrodynamics
An algorithm for robust initial orbit determination (IOD) under perturbed orbital dynamics is presented. By leveraging map inversion techniques defined in the algebra of Taylor polynomials, this tool returns a highly accurate solution to the IOD problem and estimates a range centered on the aforementioned solution in which the true orbit should lie. To
Fossà, Alberto, Losacco, Matteo, Armellin, Roberto   +2 more
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Probabilistic Optical and Radar Initial Orbit Determination

Journal of Guidance, Control, and Dynamics, 2018
Future space surveillance requires dealing with uncertainties directly in the initial orbit determination phase. We propose an approach based on Taylor differential algebra to both solve the initial orbit determination (IOD) problem and to map uncertainties from the observables space into the orbital elements space. This is achieved by approximating in
ARMELLIN, ROBERTO, DI LIZIA, PIERLUIGI
openaire   +4 more sources

Research on Sliding-Window Batch Processing Orbit Determination Algorithm for Satellite-to-Satellite Tracking

Aerospace
In response to the increasing demand for high-precision navigation of satellites operating in the cislunar space, this study introduces an onboard orbit determination algorithm considering both convergence and computational efficiency, referred to as the
Yingjie Xu, Xuan Feng, Shuanglin Li, Jinghui Pu, Shixu Chen, Wenbin Wang   +5 more
doaj   +1 more source

Initial relative-orbit determination using heterogeneous TDOA

2017 IEEE Aerospace Conference, 2017
This paper presents a solution for the initial orbit determination of a space-based RF transmitter using time-difference-of-arrival (TDOA) measurements obtained from space-based receivers in known orbits. Orbit determination requires six independent TDOA measurements spread over time.
Shuster, Simon, Sinclair, Andrew J., Lovell, T. Alan   +2 more
openaire   +2 more sources