利用坐标变换法计算卫星轨道辐射热流

卫星轨道辐射热流的计算对于卫星的热控设计和卫星红外特征研究等都具有重要意义。论文根据描述卫星运动模型参数的卫星轨道六要素，利用坐标变换方法确立了卫星任一表面与太阳、地球的位置角度关系，建立了卫星的表面辐射热流计算模型，可用以计算任意轨道参数的卫星在任意时刻太阳辐射、地球反照和地球辐射等主要轨道辐射热流，并以某轨道上六面体卫星为例给出了其不同表面在整个轨道运行期间的接收到的辐射热流计算结果。结果表明:卫星不同表面接收到的辐射热流密度随时间的变化是不一样的，主要取决于各表面与太阳和地球的角度关系。

Satellite orbit radiant heat flux calculation using method of coordinate transformation

The calculation of radiant heat flux on satellite orbit is of great significant for satellite in both the thermal design and control and research of its infrared features. In this paper, firstly combined with the six elements of satellite orbit parameters which describing satellite motion model, and with the use of the coordinate transformation method, the position relationship and angle relationship of the satellite's each surface and the sun. The earth were established. Secondly, the satellite surface radiation heat flux calculation model was established. And the major orbit radiation heat flux such as solar radiation, earth-reflection and the earth radiation of satellite with any orbit parameters and at any time can be calculate with the model. Thirdly, taking a hexahedron satellite in an orbit for instance, the radiant heat flux on its different surfaces during the period on the orbit was calculated. Results show that different surface received radiant heat flux are not the same, which mainly depend on the angle relationship of the surface and the sun and the earth.