CAJ | 학술논문

为了描述地球同步轨道卫星表面的光学特性,提出了快速三角形面元分割法计算卫星有效反射面积,结合太阳、卫星和观测点三者之间的时空关系,建立目标视星等计算模型。为了验证模型,对在轨地球同步卫星FY-2在不同时刻的有效反射面积和视星等进行仿真。结果表明,与网格化面元分割法对目标表面分割数为1600时达到收敛相比,采用三角形面元的分割数为256时,模型即达到收敛条件。此时,计算得有效反射面积与经验公式计算差值接近10-3,有效降低了面元分割数和模型复杂度。采用光电转台对目标进行跟踪观测实验,当观测时刻为2013年5月1日19：00-20：00时,目标视星等观测值为12.6～12.8,理论计算视星等与实验结果符合较好。
위료묘술지구동보궤도위성표면적광학특성,제출료쾌속삼각형면원분할법계산위성유효반사면적,결합태양、위성화관측점삼자지간적시공관계,건립목표시성등계산모형。위료험증모형,대재궤지구동보위성FY-2재불동시각적유효반사면적화시성등진행방진。결과표명,여망격화면원분할법대목표표면분할수위1600시체도수렴상비,채용삼각형면원적분할수위256시,모형즉체도수렴조건。차시,계산득유효반사면적여경험공식계산차치접근10-3,유효강저료면원분할수화모형복잡도。채용광전전태대목표진행근종관측실험,당관측시각위2013년5월1일19：00-20：00시,목표시성등관측치위12.6～12.8,이론계산시성등여실험결과부합교호。
In order to describe the optical properties of geosynchronous orbit satellite,the star magnitude model and a triangular panel method to calculate the effective reflective area were built.The magnitude model was set up considering the temporal relationship between the sun,satellite and observation point with time.The simulation curves of FY-2effective reflective area and magnitude vs.time were drawn based on the model and corresponding parameters.To astringe the magnitude model,the surface segment number of triangular panel method was 256,compared with the mesh-creation method was 1600.The complexity of the model was reduced by the triangular panel method.The difference in calculating the effective reflective area between triangular panel method and theoretical formula was up to 10-3.From 19：00to 20：00on May 1,2013,FY-2with 12.6and 12.8magnitudes was observed by using the Double Photoelectric Tracking System,the results were consistent with experimental data.