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This paper presents a fully functional and highly portable mini Unmanned Aerial Vehicle (UAV) system, HAWK, for conducting aerial localization. HAWK is a programmable mini helicopter Draganflyer X6 armed with a wireless sniffer Nokia N900. We developed custom PI-Control laws to implement a robust waypoint algorithm for the mini helicopter to fly a planned(More)
Miniature (mini) drones are enjoying increasing attention. They have a broad market and applications. However, a powerful technology often has two ethical sides. Miniature drones can be abused, rendering security and privacy concerns. The contribution of this paper is two-fold. First, we will perform a survey of mini-drones on market and compare their(More)
Positioning wireless mobiles has been widely studied. However, issues on efficiency and accuracy are not fully considered in the design of most positioning techniques. In this paper, we analyze the performance of localization of wireless mobiles with the knowledge of signal sampling theory. We propose a general approach of locating a wireless mobile device(More)
—People are benefiting tremendously from pervasively deployed WiFi networks. However, criminals may exploit the anonymity of WiFi communication and wireless routers to access illegal content such as child porn videos. It's becoming an urgent topic as regards to how to preserve and acquire network forensic data from household and small business wireless(More)
—In many wireless localization applications, we rotate a directional antenna to derive the angle of arrival (AOA) of wireless signals transmitted from a target mobile device. The AOA corresponds to the direction in which the maximum received signal strength (RSS) is sensed. However, an unanswered question is how to make sure the directional antenna picks up(More)
This paper introduces a complete CAD toolset for the implementation of digital logic in a field-programmable gate array (FPGA) platform. Compared with existing academic toolsets, this toolset introduces formal verification in each step of the tool flow, especially the formal verification of the configuration bitstream. The FPGA CAD tool verification flow(More)
—The network address translation technique (NAT) is widely used in wireless routers. It is a low cost solution to IPv4 address space limitations. However, cyber criminals may abuse NAT and hide behind wireless routers to use mobile devices and conduct crimes. To identify a suspect mobile device, we should be able to map the suspect public traffic on the(More)