摘要
为防止在不可靠环境中传感节点被捕获,提出一种与范围无关的算法来解决节点的定位问题,即基于接收信号强度(received signal strength indication,RSSI)的安全定位算法。介绍了通过估计各个锚节点的环境参数,用加权的最小均方法计算未知节点的位置,提高位置计算过程的鲁棒性和恶意攻击的防御性能。该方法既不用增加参考点的数量,也不用增加每个参考点或节点硬件的复杂性,就能够使传感器被动且高可靠地确定其自身位置。同时,在串谋和非串谋的攻击模式下,分析该算法对不同攻击模式的安全定位的性能。仿真结果表明:该算法可以得到更低的平均定位误差,同时达到恶意攻击对定位影响最小。
For sensing nodes not to be captured in unreliable environment,put forward a range-independent algorithm to solve node location problem,that is received signal strength indication（RSSI） security location algorithm.Through estimating anchor node environment parameters,use weighted minimum equal partition method to calculate the unknown node positions,improve the position calculation process robust and anti-attack defense ability.The method allows sensors to passively determine their location with high reliability,without increasing the number of reference points,or the complexity of the hardware of each reference point or node.At the same time,in the joint and non-joint attack modes,analyze the algorithm security location performances under different attack modes.The simulation result shows that the algorithm can get lower average location error,meanwhile reduces attacks influence have little side effects to location performance.
出处
《兵工自动化》
2012年第3期44-46,共3页
Ordnance Industry Automation
基金
基于语义的物联网信息标引
计算及智能管理机制研究(10zg2116)
关键词
RSSI
安全定位
恶意攻击
RSSI
security localization
malicious attacks
