Through-wall measurements of a Doppler and direction-of-arrival (DDOA) radar for tracking indoor movers

We demonstrate the use of a low-cost, two-element receiving array for tracking human movements in indoor surveillance applications. The concept entails simultaneously resolving the Doppler frequencies and the directions of arrival (DOA) of the returned signals from moving targets. The carrier frequency is 2.4 GHz, as it provides significant through-wall penetration. Moving target detection up to 30 feet distance through a 15-inch brick wall is demonstrated. Through-wall data of multiple movers is also collected using our system.