Results 21 to 30 of about 2,384 (248)
Experimental Study on the Precise Orbit Determination of the BeiDou Navigation Satellite System
Sensors, 2013 The regional service of the Chinese BeiDou satellite navigation system is now in operation with a constellation including five Geostationary Earth Orbit satellites (GEO), five Inclined Geosynchronous Orbit (IGSO) satellites and four Medium Earth Orbit ...
Jens Wickert +4 more
doaj +3 more sources
Precise Orbit Determination for ADEOS-II [PDF]
, 2006 We performed the precise orbit determination of ADEOS-II using single frequency GPS data and reviewed the results. JAXA precise orbit determination system is called “GUTS (Global and high accUracy Trajectory determination system)”.
Yamamoto, Y. +3 more
core +2 more sources
T-RAIM for Precise Orbit Determination in LEO-PNT
SensorsThe rapid development of Low Earth Orbit Position, Navigation, and Timing (LEO-PNT) constellations presents opportunities to augment Global Navigation Satellite Systems (GNSSs) with additional signals from Low Earth Orbit (LEO) satellites, thereby ...
Ciro Gioia +4 more
doaj +3 more sources
Simulation of Precise Orbit Determination of Lunar Orbiters
Chinese Astronomy and Astrophysics, 2005 Abstract Based on the ongoing Chinese lunar exploration mission, i.e. the “Chang'e 1” project, precise orbit determination of lunar orbiters is analyzed for the actual geographical distribution and observational accuracy of the Chinese united S-band (USB) observation and control network as well as the very long baseline interferometry (VLBI) tracking
黄勇, 胡小工, 黄城
core +2 more sources
ACCURACY OF SATELLITE OPTICAL OBSERVATIONS AND PRECISE ORBIT DETERMINATION
Odessa Astronomical Publications, 2017 The monitoring of low-orbit space objects (LEO-objects) is performed in the Astronomical Observatory of Odessa I.I. Mechnikov National University (Ukraine) for many years.
L. Shakun +8 more
doaj +4 more sources
Precise orbit and baseline determination for maneuvering low earth orbiters [PDF]
GPS Solutions, 2016 Orbital maneuvers are usually performed as needed for low earth orbiters to maintain a predefined trajectory or formation-flying configuration. To avoid unexpected discontinuities and to connect pre- and postmaneuver arcs with a minimal set of ...
Gu, Defeng +7 more
core +6 more sources
Remote Sensing, 2023 The global navigation satellite system (GNSS) is developing rapidly, and the related market applications and scientific research are increasing. Studies based on large low Earth orbit (LEO) satellite constellations have become research hotspots.
Baopeng Xu +8 more
doaj +1 more source
ICESat‐2 Precision Orbit Determination [PDF]
Earth and Space Science, 2021 AbstractThe ICESat‐2 Precision Orbit Determination (POD) system computes the precise position of the laser altimeter instrument in inertial space, a measurement necessary for accurate geolocation of individual photon surface returns. ICESat‐2 POD solutions are generated by the reduction of Global Positioning System (GPS) double‐difference carrier phase
T. C. Thomas +4 more
openaire +2 more sources
Precise orbit determination of Spire nano satellites [PDF]
, 2023 Spire Global, Inc. operates a growing fleet of currently more than 100 CubeSats in different low Earth orbits for commercial Earth observation. These satellites are equipped with dual-frequency GPS receivers and an attitude determination and control ...
Heike Peter +9 more
core +1 more source
Orbit Determination of GPS and Koreasat 2 Satellite Using Angle-Only Data and Requirements for Optical Tracking System [PDF]
Journal of Astronomy and Space Sciences, 2004 Gauss method for the initial orbit determination was tested using angle-only data obtained by orbit propagation using TLE and SGP4/SDP4 orbit propagation model.
Woo-Kyoung Lee +5 more
doaj +1 more source