摘要
提出了一种基于行星轨道长期变化(VSOP)87理论的行星红外辐射场景生成模型。利用VSOP87理论计算出给定时刻太阳系内八大行星在日心坐标系下的黄道坐标,对坐标进行时间修正得到修正后的真实坐标。根据观测者所处位置,对修正后的行星黄道坐标进行坐标转换,得到行星相对观测者的地平坐标。根据视轴方向和视场大小通过投影变换得到成像平面内各行星的投影坐标及投影半径,进而判断出行星是否出现在视场内。通过辐射计算求得各行星在传感器处的辐射照度,可仿真得到视场内行星的辐射图像。实现能够模拟在任意给定条件下视场内行星的红外辐射图像。
Based on the Variations Seculaires des Orbites Planetaires(VSOP) 87 theory, an approach for generating infrared radiant scene of planetary background was presented. With the VSOP87 theory, the heliocentric coordinates of eight planets in the solar system were worked out at given time. The coordinates were revised by time correction so that real coordinates were achieved. The corrected heliocentric ecliptic coordinates of planets were converted into geocentric horizontal coordinates according to the position of the observer. After that, the projected coordinates and projected radiuses of planets were achieved from projection transformation based on the field of view(FOV) and line of sight, then which planet appeared in the FOV was realized. In accordance with the radiant calculation, the irradiance at the sensor of planets was computed, and the infrared radiant image of planets in given FOV was generated. With these steps, a model which can simulate the infrared radiation of planets in the given FOV at any given condition was achieved.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2015年第3期643-648,655,共7页
Journal of System Simulation
关键词
行星
太阳系
红外辐射
场景生成
planets
solar system
infrared radiation
scene generation
