Aiming at the demands of low cost,low consumed energy and accurate localization in wireless sensor network, a novel method of using radio interference and Doppler shift for localization is proposed in this paper. One mobile anchor node moves on two intersecting lines,generating a Doppler shift,and another anchor node is stationary. Radio waves emitted from two anchor nodes create the radio interference field. The unknown nodes measure variations of instantaneous frequencies of their own radio interference signals to obtain the necessary ranging information for localization. Simulation demonstrates that the method can achieve desired performance with high accuracy. At the same time,with simple algorithm and low computation cost, the method is especially applicable to locate a number of nodes distributed in a broad area.%针对无线传感器网络（Wireless Sensor Networks,WSN）的低成本、低耗能以及准确定位的需求,提出了一种射频干涉与测量多普勒频偏相结合的节点定位方法。该方法中移动锚节点通过2次交叉运动,产生多普勒效应并与静止锚节点形成射频干涉场;未知节点通过测量自身低频干涉信号的瞬时频率的变化规律,获得定位相关信息进而实现节点定位。仿真实验结果表明该方法可以实现预期的定位,且定位精度较高;同时,定位算法简单,运算量小,能耗小,尤其适用于大范围分布的大量节点进行定位。
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