Results 61 to 70 of about 513,787 (184)
SLR Validation and Evaluation of BDS-3 MEO Satellite Precise Orbits
Remote SensingStarting from February 2023, the International Laser Ranging Service (ILRS) began releasing satellite laser ranging (SLR) data for all BeiDou global navigation satellite system (BDS-3) medium earth orbit (MEO) satellites.
Ran Li +7 more
doaj +1 more source
Solar sail orbits at artificial Sun-Earth libration points [PDF]
, 2005 In this Note a new family of solar sail orbits will be investigated in the sun-Earth circular restricted three-body problem. It will be shown that periodic orbits can be developed that are displaced above or below the plane of the restricted three-body ...
Baoyin, Hexi, McInnes, Colin R.
core +2 more sources
Investigating the suitability of Analytical and Semi-analytical Satellite theories for Space Object Catalogue maintenance in Geosynchronous regime [PDF]
, 2013 Currently, the number of space debris particles is about 33,500, out of which approximately 1100 are in geosynchronous orbits, which are tracked and whose orbital data are provided from US Space surveillance network, with instances of colliding and ...
Setty, Srinivas +3 more
core
A novel design concept for space-based polar remote sensing [PDF]
, 2012 Space-based remote sensing of the Earth is conducted from a fleet of spacecraft in two basic orbital positions, near-polar low-Earth orbits and geosynchronous orbits, with each offering its own advantages and disadvantages.
Macdonald, Malcolm +2 more
core +2 more sources
Inter-satellite link connection strategy for large-scale low earth orbit satellite networks
Tongxin xuebaoFor large-scale low earth orbit (LEO) satellite networks, two new inter-satellite link (ISL) connection strategies named Grid-V and Grid+ were proposed, which improved the traditional Grid connection strategy. The proposed strategies made full use of the
YAN Feng +3 more
doaj +2 more sources
Orbit Determination of High-Earth-Orbit Satellites by Satellite Laser Ranging
Journal of Astronomy and Space Sciences, 2017 This study presents the application of satellite laser ranging (SLR) to orbit determination (OD) of high-Earth-orbit (HEO) satellites. Two HEO satellites are considered: the Quasi-Zenith Satellite-1 (QZS-1), a Japanese elliptical-inclinedgeosynchronous-orbit (EIGSO) satellite, and the Compass-G1, a Chinese geostationary-orbit (GEO) satellite.
Hyungjik Oh +5 more
openaire +2 more sources
, 2011 Building on work from previous studies a strong case is presented for the existence of a long-term density decline in the thermosphere. Using a specially developed orbital propagator to predict satellite orbit evolution, combined with a new and accurate ...
Lewis, H.G. +5 more
core +1 more source
Static highly elliptical orbits using hybrid low-thrust propulsion [PDF]
, 2012 The use of extended static-highly elliptical orbits, termed Taranis orbits, is considered for continuous observation of high latitude regions. Low-thrust propulsion is used to alter the critical inclination of Molniya-like orbits to any inclination ...
Macdonald, Malcolm, Anderson, Pamela
core +2 more sources
On the Orbits of Infalling Satellite Halos
, 2010 The orbital properties of infalling satellite halos set the initial conditions which control the subsequent evolution of subhalos and the galaxies that they host, with implications for mass stripping, star formation quenching, and merging. Using a high-resolution, cosmological N-body simulation, I examine the orbital parameters of satellite halos as ...
openaire +4 more sources
Non-Keplerian orbits using hybrid solar sail propulsion for Earth applications [PDF]
, 2012 Half a century of space technology development has provided a wealth of new space applications. However, many still remain to be explored. Examples include increased geostationary coverage and new opportunities to enhance polar observation.
Biggs, James +3 more
core +1 more source