Accurate shape estimation method for multiple moving targets with UWB Doppler radar interferometers

摘要

This paper proposes a UWB (ultra-wideband) radar imaging method for estimating the shape of multiple targets, which are assumed to be horizontal cross-sections of pedestrians. First, we use multiple UWB Doppler interferometers to estimate the positions of scattering centers on moving targets. Next, we determine to which target each scattering center belongs. In this classification, we use a matching method for the scattering centers and targets, which uses velocity information and the α-β-γ filter. Finally, we estimate the target shape using motion compensation. Numerical simulations have verified that the proposed shape imaging method is accurate and has an RMS error of 2 mm.