The Optical Wide-field patroL-Network (OWL-Net) is a Korean optical space surveillance system used to track and monitor objects in space. In this study, the characteristics of four Initial Orbit Determination (IOD) methods were analyzed using artificial observational data from Low Earth Orbit satellites, and an appropriate IOD method was selected for use as the initial value of Precise Orbit Determination using OWL-Net data. Various simulations were performed according to the properties of observational data, such as noise level and observational time interval, to confirm the characteristics of the IOD methods. The IOD results produced via the OWL-Net observational data were then compared with Two Line Elements data to verify the accuracy of each IOD method. This paper, thus, suggests the best method for IOD, according to the properties of angles-only data, for use even when the ephemeris of a satellite is unknown.
Bibliographical noteFunding Information:
This research was supported by the development of Electro-optical Space Surveillance System, OWL-Net, and through the Korea Astronomy and Space Science Institute funded by the National Research Council of Science and Technology, and by the Korea Astronomy and Space Science Institute under the R&D program (Project No. 2019-1-854-02) supervised by the Ministry of Science and ICT
© The Korean Space Science Society.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Earth and Planetary Sciences(all)