面向航天器观测规划的改进混合重调度策略研究  

Improved Hybrid Rescheduling Strategy for Spacecraft Observation

作　　者：李玉庆[1] 徐敏强[1] 王日新[1] 

机构地区：[1]哈尔滨工业大学深空探测基础研究中心,哈尔滨150080

出　　处：《宇航学报》2009年第4期1639-1646,共8页Journal of Astronautics

基　　金：国家863计划(2005AA735080)

摘　　要：为解决不确定性条件下航天器观测规划的重调度问题,对重调度请求的响应策略进行了研究分析。首先分析了现有重调度策略的特点,进而针对其存在的弊端,在引入BP神经网络的基础上,设计了基于最小间隔的改进型混合重调度策略。算例的计算表明,应用改进后的混合重调度策略,不仅能适应环境的动态变化,获得满意的调度结果,而且能有效地降低重调度的次数,验证了该方法的有效性。This paper aims at the rescheduling problem of spacecraft observation plan under uncertainty, and studies the reseheduling strategy in detail. First, it analyzes the features of the exiting rescheduling strategies. According to their short comings, by introducing the BP neural network, this paper furtherly proposes a hybrid rescheduling strategy based on minimum interval. The computation of the example shows that using the proposed method, not only the dynamic processing environment is met and a satisfied scheduling result is obtained,but also the reseheduling degree is decreased. The simulation results demonstrate the availability of this method.

关 键 词：航天器 观测 规划与调度 重调度 重调度策略 

分 类 号：V525[航空宇航科学与技术—人机与环境工程]