CAJ | 학술논문

提出了一种基于GPS实时轨道预报计算星地激光通信载荷预对准方位俯仰角度的算法。算法考虑了卫星在轨运动过程中卫星姿态的变化及星地载荷安装角度的影响。对算法进行了软件仿真，给出了卫星经过地面站过程中星地载荷方位俯仰角度随时间变化曲线。利用专业星地链路分析软件STK（satellite tool kit）完成了算法的对比验证，对验证结果进行了分析，结果表明，算法能够准确计算星地载荷方位俯仰指向角度，与STK软件计算结果一致，具有很高的实时性与准确度。
제출료일충기우GPS실시궤도예보계산성지격광통신재하예대준방위부앙각도적산법。산법고필료위성재궤운동과정중위성자태적변화급성지재하안장각도적영향。대산법진행료연건방진，급출료위성경과지면참과정중성지재하방위부앙각도수시간변화곡선。이용전업성지련로분석연건STK（satellite tool kit）완성료산법적대비험증，대험증결과진행료분석，결과표명，산법능구준학계산성지재하방위부앙지향각도，여STK연건계산결과일치，구유흔고적실시성여준학도。
An algorithm to calculate the payload pre-aligned azimuth and elevation angles in the satellite-to-ground laser communications is proposed based on real-time GPS orbit prediction. The influence of the continuing change of satellite attitude and the payload installation angle is taken into account by the algorithm during exercise. The software simulation is conducted for the algorithm, giving out the curve of payloads' azimuth and elevation angle change over time when the satellite passes the ground station. And the professional satellite to ground link analysis software STK is used to complete the comparison and validation, the results are analyzed which shows that this algorithm can accurately calculate the azimuth and elevation angles, and calculation results are consistent with those from STK software, having good real-time and accuracy.