摘要
针对天基光学传感器网络实时调度算法的局限,深入分析目标运动特征,提出一种传感器预指派模型.在多目标传感器资源需求紧耦合和松耦合条件下,引入实时修正机制,分别提出基于修正粒子群优化和分段指派的传感器动态预指派算法.资源需求紧耦合和松耦合场景下仿真实验表明,动态预指派算法虽然需要较长时间的预先指派过程,但其实时修正的运算效率明显高于实时调度算法,为上层系统设计留下更多富余时间.
To deal with the limitation of real-time scheduling algorithm of space based optical sensor network, the object characteristics was deeply analyzed,and a sensor pre-assignment model was proposed. Furthermore, the real-time modification was inlroduced, and the dynamic sensor pre-assignment algorithms based on modified particle swarm optimization and segmented pre-as- signment were proposed, under the condition of different demand couple, i. e. tight couple and loose couple. Simulations conducted under the condition of tight couple and loose couple show that, the dynamic sensor pre-assignment algorithm needs long-time pre-as- signment process, but the computation efficiency of real-time modification exceeds that of real-time scheduling algorithm, which can leave more margin time for the upper system.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2013年第10期1994-1999,共6页
Acta Electronica Sinica
基金
国家部委资助项目(No.113010401)
关键词
低轨星座
传感器网络
调度算法
预指派
跟踪
low earth orbit constellation
sensor networks
scheduling algorithms
pre-assignment
tracking
