Results 11 to 20 of about 487,216 (307)

Solar radio proxies for improved satellite orbit prediction [PDF]

Journal of Space Weather and Space Climate, 2017
Specification and forecasting of solar drivers to thermosphere density models is critical for satellite orbit prediction and debris avoidance. Satellite operators routinely forecast orbits up to 30 days into the future.
Yaya Philippe, Hecker Louis, Dudok de Wit Thierry, Fèvre Clémence Le, Bruinsma Sean   +4 more
doaj   +2 more sources

ANALYSIS OF THE GRAVITY MODELS IMPACT ON LEO SATELLITE ORBIT PREDICTION [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Non-spherical gravity plays a crucial role in the LEO satellite orbit determination and prediction. In recent years, several new gravity models have been proposed with more comprehensive ground and space-borne data.
Y. Zhuang, L. Wang
doaj   +1 more source

A Case Study on the Effect of Atmospheric Density Calibration on Orbit Predictions with Sparse Angular Data

Remote Sensing, 2023
Accurately modeling the density of atmospheric mass is critical for orbit determination and prediction of space objects. Existing atmospheric mass density models (ADMs) have an accuracy of about 15%.
Junyu Chen, Jizhang Sang, Zhenwei Li, Chengzhi Liu   +3 more
doaj   +1 more source

Orbit Determination for All-Electric GEO Satellites Based on Space-Borne GNSS Measurements

Remote Sensing, 2022
Orbit accuracy of the transfer orbit and the mission orbit is the basis for the orbit control of all-electric-propulsion Geostationary Orbit (GEO) satellites.
Wenqiang Lu, Haoguang Wang, Guoqiang Wu, Yong Huang   +3 more
doaj   +1 more source

Improvement of orbit prediction accuracy using extreme gradient boosting and principal component analysis

Open Astronomy, 2022
High-accuracy orbit prediction plays a crucial role in several aerospace applications, such as satellite navigation, orbital maneuver, space situational awareness, etc. The conventional methods of orbit prediction are usually based on dynamic models with
Zhai Min, Huyan Zongbo, Hu Yuanyuan, Jiang Yu, Li Hengnian   +4 more
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

Estimation of a General Along-Track Acceleration in the KOMPSAT-1 Orbit [PDF]

Journal of Astronomy and Space Sciences, 2002
General along-track acceleration was estimated in the KOMPSAT-1 orbit determination process. Several sets of the atmospheric drag and solar radiation pressure coefficients were also derived with the different spacecraft area.
Byoung-Sun Lee, Jeong-Sook Lee, Jae-Hoon Kim   +2 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

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

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   +1 more source