中文摘要：

针对RSS指纹特雉降不强、无法解决环境异构性问题，提出了基于RSS值排序的RSSR指纹，并从网格内鲁棒性和网格间差异性2个维度出发，设计了基于方差的网格内指纹鲁棒性和基丁奇异值分解的网格问指纹差异性的度量方法，给出了指纹区分度的概念。实验数据表明RSSR指纹较RSS指纹有更高的网格内鲁棒性和网格间差异性，较高的指纹区分度也使其获得更高的定位精度。

英文摘要：

Aiming at the problems of weak fingerprint feature and difficulty in environment inconsistency solution in Wifi locating system by using received signal strength （RSS） fingerprint, a new RSS rank （RSSR） fingerprint based on the rank of RSS value is presented. Starting from the two dimensions of the intra-grid robustness and the inter-grid difference, a measurement method for the intra-grid robustness based on the variance and the inter-grid fingerprint difference based on SVD is designed, and the concept of fingerprint difference degree is given. The experimental data prove that the RSSR fingerprint has stronger inner-grid robustness, bigger inter-grid difference and better locating ac- curacy than RSS fingerprint.