Detection and Tracking of UAVs using Interferometric Radar

This paper investigates the problem of UAV detection and tracking using an interferometric radar. Different from various existing work in the literature, UAVs are detected and tracked by extracting the information of range and 2-D velocities from interferometric radar measurements. The range and radial velocity of the UAV can be estimated by performing respective fast-time and slow-time FFT to the collected data. However, it is insufficient to track the UAV with only radial velocity information as UAVs do not usually fly straight along the direction of radar line of sight (LoS). Fortunately, we can estimate the angular velocity of the UAV from the interferometric radar measurement. We propose to track the UAV by predicting the next position of the UAV with the information of range and 2-D velocities, namely radial and angular velocities, in this paper. Experimental results are presented to validate the effectiveness of the method.