Results 51 to 60 of about 688,419 (214)

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
doaj   +1 more source

Validation of GPS Based Precise Orbits Using SLR Observations [PDF]

Journal of Astronomy and Space Sciences, 2009
In this study, the YLPODS (Yonsei Laser-ranging Precision Orbit Determination System) is developed for POD using SLR (Satellite Laser Ranging) NP (Normal Point) observations. The performance of YLPODS is tested using SLR NP observations of TOPEX/POSEIDON
Young-Rok Kim, Eunseo Park, Sang-Young Park, Kyu-Hong Choi, Yoola Hwang, Hae-Yeon Kim, Byoung-Sun Lee, Jaehoon Kim   +7 more
doaj   +1 more source

Simulation of the Use of Variance Component Estimation in Relative Weighting of Inter-Satellite Links and GNSS Measurements

Remote Sensing, 2022
Inter-satellite links (ISLs) can improve the performance of the Global Navigation Satellite System (GNSS) in terms of precise orbit determination, communication, and data-exchange capabilities.
Tomasz Kur, Tomasz Liwosz
doaj   +1 more source

Asymptotic behaviour of orbit determination for hyperbolic maps [PDF]

, 2020
We deal with the orbit determination problem for hyperbolic maps. The problem consists in determining the initial conditions of an orbit and, eventually, other parameters of the model from some observations. We study the behavior of the confidence region
Bonanno, Claudio, Marò, Stefano
core   +3 more sources

Resonant periodic orbits in the exoplanetary systems [PDF]

Astrophysics and Space Science, Volume 349, Issue 2, pp.657-676 (2014), 2013
The planetary dynamics of $4/3$, $3/2$, $5/2$, $3/1$ and $4/1$ mean motion resonances is studied by using the model of the general three body problem in a rotating frame and by determining families of periodic orbits for each resonance. Both planar and spatial cases are examined.
arxiv   +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

A New Triangulation Algorithm for Positioning Space Debris

Remote Sensing, 2021
A single electro-optical (EO) sensor used in space debris observation provides angle-only information. However, space debris position can be derived using simultaneous optical measurements obtained from two EO sensors located at two separate observation ...
Long Chen, Chengzhi Liu, Zhenwei Li, Zhe Kang   +3 more
doaj   +1 more source

Track Initiation of Low-Earth-Orbit Objects using Statistical Modeling of Sparse Observations [PDF]

, 2014
International audienceIn this paper, we investigate a new track initiation technique enabling the use of a low-cost radar system for Low-Earth-Orbit surveillance.
Castaings, Thibaut, Muller, Florent, Pannetier, Benjamin, Rombaut, Michèle   +3 more
core   +2 more sources

Dynamic precise orbit determination of Hayabusa2 using laser altimeter (LIDAR) and image tracking data sets

Earth, Planets and Space, 2020
The precise orbit of the Hayabusa2 spacecraft with respect to asteroid Ryugu is dynamically determined using the data sets collected by the spacecraft’s onboard laser altimeter (LIght Detection And Ranging, LIDAR) and automated image tracking (AIT).
Keiko Yamamoto, Toshimichi Otsubo, Koji Matsumoto, Hirotomo Noda, Noriyuki Namiki, Hiroshi Takeuchi, Hitoshi Ikeda, Makoto Yoshikawa, Yukio Yamamoto, Hiroki Senshu, Takahide Mizuno, Naru Hirata, Ryuhei Yamada, Yoshiaki Ishihara, Hiroshi Araki, Shinsuke Abe, Fumi Yoshida, Arika Higuchi, Sho Sasaki, Shoko Oshigami, Seiitsu Tsuruta, Kazuyoshi Asari, Makoto Shizugami, Naoko Ogawa, Go Ono, Yuya Mimasu, Kent Yoshikawa, Tadateru Takahashi, Yuto Takei, Atsushi Fujii, Tomohiro Yamaguchi, Shota Kikuchi, Sei-ichiro Watanabe, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Takanao Saiki, Yuichi Tsuda   +37 more
doaj   +1 more source

Performance Comparison of the Batch Filter Based on the Unscented Transformation and Other Batch Filters for Satellite Orbit Determination [PDF]

Journal of Astronomy and Space Sciences, 2009
The main purpose of the current research is to introduce the alternative algorithm of the non-recursive batch filter based on the unscented transformation in which the linearization process is unnecessary.
Eunseo Park, Sang-Young Park, Kyu-Hong Choi   +2 more
doaj   +1 more source