Orbit determination of KOMPSAT-1 and Cryosat-2 satellites using optical wide-field patrol network (OWL-Net) data with batch least squares filter

Eunji Lee, Sang Young Park, Bumjoon Shin, Sungki Cho, Eun Jung Choi, Junghyun Jo, Jang Hyun Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The optical wide-field patrol network (OWL-Net) is a Korean optical surveillance system that tracks and monitors domestic satellites. In this study, a batch least squares algorithm was developed for optical measurements and verified by Monte Carlo simulation and covariance analysis. Potential error sources of OWL-Net, such as noise, bias, and clock errors, were analyzed. There is a linear relation between the estimation accuracy and the noise level, and the accuracy significantly depends on the declination bias. In addition, the time-tagging error significantly degrades the observation accuracy, while the time-synchronization offset corresponds to the orbital motion. The Cartesian state vector and measurement bias were determined using the OWL-Net tracking data of the KOMPSAT-1 and Cryosat-2 satellites. The comparison with known orbital information based on two-line elements (TLE) and the consolidated prediction format (CPF) shows that the orbit determination accuracy is similar to that of TLE. Furthermore, the precision and accuracy of OWL-Net observation data were determined to be tens of arcsec and sub-degree level, respectively.

Original languageEnglish
Pages (from-to)19-30
Number of pages12
JournalJournal of Astronomy and Space Sciences
Volume34
Issue number1
DOIs
Publication statusPublished - 2017 Mar 1

Fingerprint

patrols
orbit determination
filter
filters
covariance analysis
tagging
tracking networks
time synchronization
prediction
declination
state vectors
simulation
surveillance
optical measurement
clocks
marking
format
monitors
CryoSat
orbits

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Earth and Planetary Sciences(all)

Cite this

Lee, Eunji ; Park, Sang Young ; Shin, Bumjoon ; Cho, Sungki ; Choi, Eun Jung ; Jo, Junghyun ; Park, Jang Hyun. / Orbit determination of KOMPSAT-1 and Cryosat-2 satellites using optical wide-field patrol network (OWL-Net) data with batch least squares filter. In: Journal of Astronomy and Space Sciences. 2017 ; Vol. 34, No. 1. pp. 19-30.
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Orbit determination of KOMPSAT-1 and Cryosat-2 satellites using optical wide-field patrol network (OWL-Net) data with batch least squares filter. / Lee, Eunji; Park, Sang Young; Shin, Bumjoon; Cho, Sungki; Choi, Eun Jung; Jo, Junghyun; Park, Jang Hyun.

In: Journal of Astronomy and Space Sciences, Vol. 34, No. 1, 01.03.2017, p. 19-30.

Research output: Contribution to journalArticle

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