CAJ | 학술논문

安装在机翼上的卫星通信相控阵天线，其波束指向角度信息无法由航电系统直接提供。通过三维电子罗盘测量相控阵阵面的姿态参数，结合航电系统提供的飞机姿态参数和卫星角度参数，可以完成卫星相对于阵面角度的校正。校正方法首先把机身坐标系参数转换到地球坐标系，然后再转换到阵面坐标系，从而求解指向角度。计算机仿真证明了校正方法可行，坐标变换方法正确，同时也证明姿态测量参数精度影响相控阵天线最终性能。
안장재궤익상적위성통신상공진천선，기파속지향각도신식무법유항전계통직접제공。통과삼유전자라반측량상공진진면적자태삼수，결합항전계통제공적비궤자태삼수화위성각도삼수，가이완성위성상대우진면각도적교정。교정방법수선파궤신좌표계삼수전환도지구좌표계，연후재전환도진면좌표계，종이구해지향각도。계산궤방진증명료교정방법가행，좌표변환방법정학，동시야증명자태측량삼수정도영향상공진천선최종성능。
The beam steering angle generated from the avionics system is not correct when the phased array antenna of satellite communications is installed at the wing of the flight. The 3-D electronic compass is employed to measure the array plane attitude parameters. In addition, the satellite angle and attitude pa-rameters of airplane are also necessary for calibration. The proposed methodology transforms the coordina-tion of satellite from the airplane coordinate system into earth coordinate system firstly. Then it is trans-formed into the array plane coordinate system so that the beam steering angle could be obtained. The com-puter simulation shows that the new approach works well and the coordinate transfer matrix is right as well. It is also proved that the performance of the array antenna is related with the measure accuracy of the elec-tronic compass.