Abstract
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.
Publisher
The Korean Space Science Society
Subject
General Earth and Planetary Sciences,General Physics and Astronomy
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