Results 11 to 20 of about 142,311 (289)

Improving Low Earth Orbit (LEO) Prediction with Accelerometer Data

Remote Sensing, 2020
Low Earth Orbit (LEO) satellites have been widely used in scientific fields or commercial applications in recent decades. The demands of the real time scientific research or real time applications require real time precise LEO orbits.
Haibo Ge, Bofeng Li, Maorong Ge, Liangwei Nie, Harald Schuh   +4 more
doaj   +3 more sources

Improving orbit prediction accuracy through supervised machine learning

Advances in Space Research, 2018
30 pages, 21 figures, 4 tables, Preprint submitted to Advances in Space Research, on December 14 ...
Peng, Hao, Bai, Xiaoli
openaire   +5 more sources

Prediction Aerospace Software to Detect Solar Activity and the Fast Tracking of Solar Activity Using Remote Sensing Instruments in Orbit

Remote Sensing, 2023
At present, solar remote sensing instruments face problems regarding the short detection time for solar activity and the need to preheat the electronics before detection.
Yingqiu Shao, Xiaohu Yang, Zhanfeng Li, Yu Huang, Bo Li, Guanyu Lin, Xu Guo, Jifeng Li   +7 more
doaj   +1 more source

Detection and Tracking of Weak Exoatmospheric Target with Elliptical Hough Transform

Remote Sensing, 2022
An elliptical Hough transform (EHT) algorithm is proposed in the framework of track-before-detect (TBD) for joint detection and tracking of weak exoatmospheric targets.
Bin Rao, Yongkun Zhou, Yuanping Nie
doaj   +1 more source

Ballistic Coefficient Calculation Based on Optical Angle Measurements of Space Debris

Sensors, 2023
Atmospheric drag is an important factor affecting orbit determination and prediction of low-orbit space debris. To obtain accurate ballistic coefficients of space debris, we propose a calculation method based on measured optical angles.
Yigao Ding, Zhenwei Li, Chengzhi Liu, Zhe Kang, Mingguo Sun, Jiannan Sun, Long Chen   +6 more
doaj   +1 more source

Impacts of Arc Length and ECOM Solar Radiation Pressure Models on BDS-3 Orbit Prediction

Remote Sensing, 2022
The BeiDou global navigation satellite system (BDS-3) has already provided worldwide navigation and positioning services for which the high-precision BDS-3-predicting orbit is the foundation.
Ran Li, Chunmei Zhao, Jiatong Wu, Hongyang Ma, Yang Zhang, Guang Yang, Hong Yuan, Hongyu Zhao   +7 more
doaj   +1 more source

Effect of lunar gravity models on Chang'E-2 orbit determination using VLBI tracking data

Geodesy and Geodynamics, 2016
The precise orbit determination of Chang'E-2 is the most important issue for successful mission and scientific applications, while the lunar gravity field model with big uncertainties has large effect on Chang'E-2 orbit determination.
Erhu Wei, Xuechuan Li, Shuanggen Jin, Jingnan Liu   +3 more
doaj   +1 more source

Evaluation of strategies for the ultra-rapid orbit prediction of BDS GEO satellites

Geo-spatial Information Science, 2023
The quality of BeiDou Navigation Satellite System (BDS) Geostationary Earth Orbit (GEO) ultra-rapid products is unsatisfactory because GEO satellites are nearly stationary relative to ground stations.
Wenxi Zhao, Xiaolei Dai, Yidong Lou, Yaquan Peng, Xueyong Xu   +4 more
doaj   +1 more source

Spectral Signatures of KiloHertz Quasi-Periodic Oscillations from Accreting Neutron Stars [PDF]

, 2000
Correlations discovered between millisecond timing properties and spectral properties in neutron star x-ray binaries are described and then interpreted in relation to accretion flows in the systems.
Kaaret, Philip
core   +3 more sources

Impact of Thermospheric Mass Density on the Orbit Prediction of LEO Satellites

Space Weather, 2020
Many thermospheric mass density (TMD) variations have been recognized in observations and physical simulations; however, their impact on the low‐Earth‐orbit satellites has not been fully evaluated.
Changyong He, Yang Yang, Brett Carter, Kefei Zhang, Andong Hu, Wang Li, Florent Deleflie, Robert Norman, Suqin Wu   +8 more
doaj   +1 more source