Results 101 to 110 of about 32,900 (194)

Real-time PPP algorithm considering hourly discontinuous BDS-3 broadcast ephemeris with covariance-adaptive Kalman filter

Satellite Navigation
Previous studies indicate that the accuracy of the BDS-3 broadcast orbit is comparable to that of the real-time precise products provided by International GNSS Service (IGS). However, the precision of both the broadcast orbit and clock remains limited by
Cheng Yang, Kai Wang, Yingnan Zhang, Jiayi Shi, Zhouzheng Gao   +4 more
doaj   +1 more source

Practical Performance Assessment of Water Vapor Monitoring Using BDS PPP-B2b Service

Applied Sciences
BeiDou navigation satellite system (BDS) precise point positioning (PPP)-B2b has significant potential for application in meteorological fields, such as standalone water vapor monitoring in depopulated area without Internet.
Linghao Zhou, Enhong Zhang, Hong Liang, Zuquan Hu, Meifang Qu, Xinxin Li, Yunchang Cao   +6 more
doaj   +1 more source

Ephemeris

, 2012
Source: Barthold Heinrich Brockes: Auszug der vornehmsten Gedichte aus dem Irdischen Vergnügen in Gott. Faksimiledruck nach der Ausgabe von 1738, Stuttgart: Metzler, 1965.
openaire   +1 more source

Development of Simulation Tool for Orbital Motion of Meteoroid Stream Particles [PDF]

Journal of Astronomy and Space Sciences, 2000
This paper presents the preliminary survey and simulation results of the prediction of Leonid stream's orbital motion. Based on the model survey on eject velocity and perturbation of meteoroid particles, a simulation program was developed and applied to ...
Bang-Yeop Kim
doaj  

Study on the Design of Broadcast Ephemeris Parameters for Low Earth Orbit Satellites

Remote Sensing
The integration of low Earth orbit (LEO) satellite constellations into the Global Navigation Satellite System (GNSS) has emerged as a prominent research focus, as LEO satellites can significantly enhance the precision of GNSS positioning, navigation, and
Dongzhu Liu, Xing Su, Xin Xie, Han Zhou, Zhengjian Qu   +4 more
doaj   +1 more source

Calculation of a Dynamical Substitute for the Real Earth–Moon System Based on Hamiltonian Analysis

The Astrophysical Journal
The Earth–Moon libration points no longer exhibit the dynamical characteristics of “equilibrium points” due to perturbation effects when applying the ephemeris model. By decoupling the forced motions within the ephemeris model and computing the dynamical
Chenyuan Qiao, Xi Long, Leping Yang, Yanwei Zhu, Weiwei Cai   +4 more
doaj   +1 more source

JPL Development Ephemeris number 96 [PDF]

The fourth issue of JPL Planetary Ephemerides, designated JPL Development Ephemeris No. 96 (DE96), is described. This ephemeris replaces a previous issue which has become obsolete since its release in 1969.
Keesey, M. S. W., Newhall, X. X., Standish, E. M., Jr.   +2 more
core   +1 more source

Generating Planar Trajectories for Neptunian System Exploration Using Motion Primitives. [PDF]

J Astronaut Sci
Miceli GE, Bosanac N.
europepmc   +1 more source

Single-base station positioning for photovoltaic power plant inspection UAVs based on PPP-B2b signal. [PDF]

Sci Rep
Zhou L, Xie W, Hu L, Zheng S.
europepmc   +1 more source

Exploring central star variability of planetary nebulae using gaia photometry. [PDF]

Sci Rep
NegmEldin MA, Ali A, Hamid GM, Essam A.
europepmc   +1 more source