%T A real-time high resolution passive WiFi Doppler-radar and its applications %O Copyright © 2014 IEEE. %D 2014 %A B Tan %A K Woodbridge %A K Chetty %X The design and implementation of a real-time passive high Doppler resolution radar system is described in this paper. Batch processing and pipelined processing flow are introduced for reducing the processing time to enable real-time display. The proposed method is implemented on a software defined radio (SDR) platform. Two experiments using this system are described: one based on small human body motions and another one on hand gesture detection. The results from these experiments show that the proposed system can be used in a range of application scenarios such as eHealth, human-machine interaction and high accuracy indoor target tracking. %J 2014 International Radar Conference, Radar 2014 %C Lille, France %V 2014 %L discovery1467046 %K Doppler radar, Doppler shift, IEEE 802.11 Standards, Passive radar, Real-time systems %S International Radar Conference (Radar) %P 1-6 %I IEEE %B 2014 International Radar Conference (Radar)