利用无线传感器网络在对消防员定位的相关研究中,采用GPS单一机制的方法在室内定位时会受无GPS信号影响而无法定位,而采用单一信号强度的方法时,由于没有坐标信息,无法计算出消防员的位置信息。利用GPS及信号强度结合的方法,借助于利用GPS节点,利用信号强度损耗模型计算出消防员所在位置坐标,然后利用插值方法绘制出消防人员整个过程的行驶轨迹,给指挥员提供实时的形象直观的显示。通过实验仿真验证了算法的可行性。

Some of them only use GPS mechanism while some of them only use RSSI (received signal strength indicator). The GPS method will affect the locations when there is no GPS signal, and the RSSI method cannot calculate the location of fireman without reference location information. Provide a new method of combining GPS and RSSI to calculate the location of fireman by GPS information, and then use method to plot the whole trajectory of fireman. Simulation results show that the algorithm is feasible.