Resolution of interferometric angular velocity measurements

An analysis of the resolution of a new method of interferometric angular velocity measurement is presented. The angular velocity of a moving object is proportional to the frequency of the interferometer response produced when the object passes through the interferometer beam pattern. The technique allows measurement of the angular velocity without complex processing or narrow beamwidth. A derivation of the resolution is presented for a general system, and it is shown that the frequency resolution is dependent on the system antenna pattern, as well as the system bandwidth. Increasing the beamwidth is shown to result in better frequency resolution. A specific example is given for a system designed to measure the velocity of a moving human. Simulated results of a moving point source are shown, as well as simulated and experimental data from a moving human.