CAJ | 학술논문

在传感器网络中（WSN）锚节点负责接收GPS定位信号，但其使用寿命受能量约束，为了提高传感器网络的生存周期和定位精度，提出基于无迹Calman滤波（UKF）和传感器网络锚节点RSS在线建模的WSN定位算法，实现高效资源管理和利用方式。该算法主要包括位置预测和目标定位两个步骤，利用UKF算法对目标节点的下一位置进行预测，选择开启距离预测位置最近的几个锚节点，关闭无用锚节点，有效降低网络能耗。利用锚节点之间相互信号强弱基于RSS对开启锚节点周围的距离与RSS信号强弱关系进行建模，降低RSS算法对环境的依赖度。实验结果表明该算法能够有效对锚节点的开启/睡眠进行管理，并可降低环境依赖性，从而实现负载均衡降低能耗和提高定位精度的效果。
재전감기망락중（WSN）묘절점부책접수GPS정위신호，단기사용수명수능량약속，위료제고전감기망락적생존주기화정위정도，제출기우무적Calman려파（UKF）화전감기망락묘절점RSS재선건모적WSN정위산법，실현고효자원관리화이용방식。해산법주요포괄위치예측화목표정위량개보취，이용UKF산법대목표절점적하일위치진행예측，선택개계거리예측위치최근적궤개묘절점，관폐무용묘절점，유효강저망락능모。이용묘절점지간상호신호강약기우RSS대개계묘절점주위적거리여RSS신호강약관계진행건모，강저RSS산법대배경적의뢰도。실험결과표명해산법능구유효대묘절점적개계/수면진행관리，병가강저배경의뢰성，종이실현부재균형강저능모화제고정위정도적효과。
In WSN anchor node is responsible for receiving GPS signal, but its life is energy constrained. In order to improve the life cycle and the positioning accuracy of sensor networks, UKF-RSS online modeling based WSN location tracking algorithm is proposed, to achieve efficient resource management and use patterns. The algorithm mainly includes target prediction and target location. The UKF algorithm is used to predict the next location of the target node, and select the last few anchor nodes of the prediction position, close the useless anchor node, which effectively reduce the energy consumption of the network. Then it uses the anchor node between the signal intensity of RSS modeling of the distance from the RSS signal strength between open around the anchor nodes based on RSS algorithm, which reduces dependence on the environ-ment. The experimental results show that the algorithm can effectively manage the anchor node open/sleep, and can reduce the environmental dependence, so as to achieve load balance and reduce energy consumption and improve the positioning precision effect.