Wi-Fi Based Device-free Microwave Ghost Imaging Indoor Surveillance System

摘要

In this paper, we propose an Wi-Fi based device-free microwave ghost imaging (GI) indoor surveillance system. Wireless-Fidelity (Wi-Fi) signals originally designed for communication purposes are employed as the incoherent illumination source in the framework of microwave GI. The object reconstruction procedure of microwave GI is modified to fit indoor scenarios where both stationary and moving objects are presented. Numerical simulation validates that the proposed Wi-Fi based microwave GI scheme can effectively isolate indoor targets reflections with different velocities and obtain focused images respectively. Since the proposed system takes the advantage of existing Wi-Fi access points (APs) as its transceivers, it can be regarded as a device-free system and its complexity and operational cost have been significantly reduced.