Three-Dimensional Velocity Measurement Using a Dual Axis Millimeter-Wave Interferometric Radar

In this work, a method for directly measuring target velocity in three dimensions using dual axis correlation interferometric radar is presented. Recent advances have shown that the measurement of target's angular possible by correlating signals measured at spatially diverse aperture locations. By utilizing multiple orthogonal baselines and conventional Doppler methods to obtain radial velocity, full three-dimensional vector can be obtained only receive antennas single transmitter, without need tracking. A $\text{41.8 GHz}$ with $7.26\lambda$ antenna baseline presented along measurements moving parallel plane array, components both tangential velocity. These experiments achieved total root-mean-square errors $\text{41.01 mm}\cdot\text{s}^{-1}$ ($10.5\%$) $\text{45.07 ($13.5\%$) motion relative array; estimated trajectory angle RMSEs $10.42^\circ$ $5.11^\circ$ were each experiment respectively.