Real-time orbit prediction in a large telescope system

2009 ◽  
Author(s):  
Song-hua Yang ◽  
Yao Mao ◽  
Jia-guang Ma
Keyword(s):  
Real Time ◽  
Large Telescope ◽  
Orbit Prediction ◽  
Telescope System

scholarly journals Improving Low Earth Orbit (LEO) Prediction with Accelerometer Data

2020 ◽  
Vol 12 (10) ◽  
pp. 1599 ◽  
Author(s):  
Haibo Ge ◽  
Bofeng Li ◽  
Maorong Ge ◽  
Liangwei Nie ◽  
Harald Schuh
Keyword(s):  
Real Time ◽  
Traditional Method ◽  
Initial Conditions ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Accelerometer Data ◽  
Orbit Prediction ◽  
Real Time Applications ◽  
Empirical Coefficients ◽  
Calibration Parameters

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. Usually, the predicted orbit is one of the solutions for real time users, so it is of great importance to investigate LEO orbit prediction for users who need real time LEO orbits. The centimeter level precision orbit is needed for high precision applications. Aiming at obtaining the predicted LEO orbit with centimeter precision, this article demonstrates the traditional method to conduct orbit prediction and put forward an idea of LEO orbit prediction by using onboard accelerometer data for real time applications. The procedure of LEO orbit prediction is proposed after comparing three different estimation strategies of retrieving initial conditions and dynamic parameters. Three strategies are estimating empirical coefficients every one cycle per revolution, which is the traditional method, estimating calibration parameters of one bias of accelerometer hourly for each direction by using accelerometer data, and estimating calibration parameters of one bias and one scale factor of the accelerometer for each direction with one arc by using accelerometer data. The results show that the predicted LEO orbit precision by using the traditional method can reach 10 cm when the predicted time is shorter than 20 min, while the predicted LEO orbit with better than 5 cm for each orbit direction can be achieved with accelerometer data even to predict one hour.

scholarly journals GPS Satellite Orbit Prediction at User End for Real-Time PPP System

Sensors ◽  
2017 ◽  
Vol 17 (9) ◽  
pp. 1981 ◽  
Author(s):  
Hongzhou Yang ◽  
Yang Gao
Keyword(s):  
Real Time ◽  
Satellite Orbit ◽  
Orbit Prediction

Impacts of Earth rotation parameters on GNSS ultra-rapid orbit prediction: Derivation and real-time correction

2017 ◽  
Vol 60 (12) ◽  
pp. 2855-2870 ◽  
Author(s):  
Qianxin Wang ◽  
Chao Hu ◽  
Tianhe Xu ◽  
Guobin Chang ◽  
Alberto Hernández Moraleda
Keyword(s):  
Real Time ◽  
Earth Rotation ◽  
Orbit Prediction ◽  
Earth Rotation Parameters ◽  
Time Correction ◽  
Rotation Parameters

Log mining to re-construct system behavior: An exploratory study on a large telescope system

2019 ◽  
Vol 114 ◽  
pp. 121-136 ◽  
Author(s):  
Michele Pettinato ◽  
Juan Pablo Gil ◽  
Patricio Galeas ◽  
Barbara Russo
Keyword(s):  
Exploratory Study ◽  
System Behavior ◽  
Large Telescope ◽  
Log Mining ◽  
Construct System ◽  
Telescope System
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