Results 31 to 40 of about 3,183,096 (399)
Remote Sensing, 2022 Future Geosynchronous Synthetic Aperture Radar (GEOSAR) missions will provide permanent monitoring of continental areas of the planet with revisit times of less than 24 h.
Jorge Nicolás-Álvarez +6 more
doaj +1 more source
IEEE Access, 2023 Massive global Low Earth Orbit (LEO) constellations have been developed rapidly with the characteristics of larger number and shorter orbital periods of LEO satellites in recent years.
Shuren Guo +6 more
doaj +1 more source
Orbit determination of space objects based on sparse optical data [PDF]
, 2010 While building up a catalog of Earth orbiting objects, if the available optical observations are sparse, not deliberate follow ups of specific objects, no orbit determination is possible without previous correlation of observations obtained at different ...
A. Milani +24 more
core +2 more sources
Satellite Navigation, 2020 To provide competitive global positioning and timing services under the condition that monitoring stations are confined to Chinese territory, inter-satellite link (ISL) technology is used by the third-generation BeiDou Navigation Satellite System (BDS-3).
Rengui Ruan +6 more
semanticscholar +1 more source
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 +6 more
doaj +1 more source
Experiments in orbit determination using numerical methods [PDF]
, 1985 The dynamics of the observed object is written as a system of integral equations. This system is solved numerically by representing the components of the force function as linear combinations of B-splines and by applying the multigrid technique.
Traas, C.R.
core +3 more sources
Centimeter-Level Precise Orbit Determination for the Luojia-1A Satellite Using BeiDou Observations
Remote Sensing, 2020 Luojia-1A is a scientific experimental satellite operated by Wuhan University, which is the first low earth orbiter (LEO) navigation signal augmentation experimental satellite.
Lei Wang +6 more
semanticscholar +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 +4 more
doaj +1 more source
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 +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