CAJ | 학술논문

无线多媒体传感器网络(WMSNs)的覆盖问题的研究成果大多基于二维感知模型。对于视频节点而言，二维感知模型无法准确地描述其感知范围，监测平面上方的空间通常会被遗漏。因此，提出了空间覆盖的概念，并重新定义了三维感知模型。通过分离两个影响空间覆盖的因素———视频传感器俯仰角和偏向角，采用粒子群优化算法对一重空间覆盖率进行优化。并结合实际应用需求，提出了有效空间覆盖率的概念，保证了对监测目标的有效视频信息收集。最后，通过仿真实验优化，网络的空间覆盖程度得到了明显提高，证明了优化算法的有效性。
무선다매체전감기망락(WMSNs)적복개문제적연구성과대다기우이유감지모형。대우시빈절점이언，이유감지모형무법준학지묘술기감지범위，감측평면상방적공간통상회피유루。인차，제출료공간복개적개념，병중신정의료삼유감지모형。통과분리량개영향공간복개적인소———시빈전감기부앙각화편향각，채용입자군우화산법대일중공간복개솔진행우화。병결합실제응용수구，제출료유효공간복개솔적개념，보증료대감측목표적유효시빈신식수집。최후，통과방진실험우화，망락적공간복개정도득도료명현제고，증명료우화산법적유효성。
The majority of the researches about the coverage problem of wireless multi-media sensor networks(WMSNs)are based on 2D sensing model.For video nodes,2D sensing model cannot describe their sensing range precisely,and the space above the monitoring horizon is generally omitted.Thus,the concept of space coverage was proposed,and a new 3D sensing model was defined.By separating the two factors pitch angles and deflection angles which can seriously influence the space coverage,the Particle Swarm Optimization (PSO)was employed for optimizing the 1 -space coverage.By considering the requirements of practical applications,the concept of efficient space coverage was proposed here,which can guarantee the efficient video collection of monitoring targets.At last,the degree of space coverage is significantly improved by means of simulation,which proves the proposed optimization efficient.