低轨星座跟踪传感器搜索调度方法  

A Tracking Sensor Search Scheduling Method for Low-Earth Orbit Constellation

作　　者：王博[1] 许丹[1] 吴京[1] 安玮[1] 

机构地区：[1]国防科技大学电子科学与工程学院,长沙410073

出　　处：《宇航学报》2010年第5期1421-1426,共6页Journal of Astronautics

基　　金：国家部委资助项目(11301030101)

摘　　要：针对静态区域搜索调度和无调度的顺序搜索难以适应低轨星座跟踪传感器所关注的高速运动目标和复杂空间环境引起的不确定观测问题,基于搜索区域动态更新,提出全局信息增益准则下动态区域搜索调度方法;并引入非二元观测模型,提出观测数据不确定条件下搜索调度方法。仿真实验表明,所提方法对目标高速运动和观测数据不确定情况的目标捕获性能更优,尤其是传感器单帧检测概率较低情况。Static region search scheduling methods used in lowearth orbit constellation,couldn＇t adapt to the high speed targets concerned and observation uncertainties brought by the complicated space environments.To deal with the problem a dynamic region search scheduling method based on the global information gain criterion is proposed through dynamic updating of search regions.Furthermore,a search scheduling method under the condition of observation uncertainties is proposed via introduction of non-binary obserration model.The simulation results indicate that in the scenarios of high speed target capture and observation uncertainties,the proposed method performs better than static region search scheduling and unscheduled sequential search,especially to the sensors with lower detection probability.

关 键 词：低轨星座 传感器网络 调度算法 区域搜索 

分 类 号：TN95[电子电信—信号与信息处理]