A General Criterion for Moving-Target Resolution

A simple criterion is defined which allows a quick estimate of a radar´s capability to resolve two targets with differential motion. The criterion is applicable to general types of target motion, and hence will yield nominal resolution performance for arbitrary systems that utilize relative motion, such as synthetic aperture radar or inverse synthetic aperture radar, Doppler filters, systems that make use of target spin, and so forth. The criterion is considered both for weighted and unweighted signals.