Abstract: To solve the accuracy degradation of wireless location that results from multi-path fading, the paper improves the traditional narrow correlation technology using Teager-Kaiser (TK) operator. The improved technology not only retains the merit of narrow correlator, but also mitigates the short-time delay multi-path fading better. The simulation result shows that the technology proposed in this paper can mitigate the multi-path fading better and improve the accuracy of location.