국내기사
각도 기반 초기궤도결정 오차 동특성이 우주물체의광학 식별 및 추적 안정성에 미치는 영향 분석 = Analysis of the effects of angles-only IOD error dynamics on optical identification and tracking stability of space objects
Optical identification tracking systems rely on initial orbit determination (IOD) to align the telescope toward a target, and errors in angles–only IOD arising from observation noise, geometric limitations, or temporal gaps can significantly influence early tracking stability. This study simplifies representative forms of IOD errors and incorporates them into a frame–rate–constrained PID–based tracking loop to evaluate their impact on convergence and robustness. Simulation results show that tracking performance is governed not only by the magnitude of the initial IOD error but more critically by its temporal variation, such as drift rate and acceleration. Certain error patterns cause unstable or diverging responses under sampling and actuation limits, whereas others remain tolerable within system margins. Based on these findings, quantitative thresholds of acceptable IOD error dynamics are identified, providing practical design guidance for required IOD accuracy, controller tuning, and system-level allocation of tracking performance budgets.