摘要
从空间目标光学特性建模的角度出发,获取空间目标的光学辐射特性,必须计算空间目标表面的瞬态温度场分布。根据空间目标的几何结构,通过分析目标与背景以及目标内部的能量交换关系,采用数值计算的方法,建立了空间目标表面温度场分布模型。在温度场分布模型的基础上,结合一定的初始条件,可获取不同时刻的空间目标表面瞬态温度场。根据温度场分布模型,对弹道目标进行了温度仿真计算,并定量地分析了多种参数对温度计算的影响规律,结果证明模型正确性,并为空间目标的光学特性研究提供了参考条件和依据。
From the perspective of modeling the optical characteristics of spatial targets, the distribution of the transient temperature field on the surface of spatial targets must firstly be calculated in order to obtain the optical radiation characteristics of spatial targets. By analyzing the energy exchange between the target and the background, and the energy exchange inside the target, a distribution model of temperature field on the surface of spatial target is proposed based on the geometric construction of the spatial target and numerical computation. Combining with certain initial conditions, the temperature field on the surface of spatial target in different time can be obtained. Then, based on this distributing model of the temperature field, temperature simulating computation of the trajectory target is made. In addition, the paper analyzes the influence rules of temperature computation caused by several parameters, which presents the necessary condition when searching the optics character of the space target.
出处
《计算机仿真》
CSCD
北大核心
2010年第6期83-86,111,共5页
Computer Simulation
关键词
空间目标
光学特性
表面温度场
Spatial target
Optical characteristics
Surface temperature field
