Resolution and ambiguity bounds for interferometric-like systems

For a sensor array, time/frequency and many other estimation problems, resolution increases with growing "aperture" or "data window." High resolution with few sampling points can be achieved by using sparse or interferometric-like sampling schemes. We use a combination of the Cramer-Rao and Weiss-Weinstein (1988) bounds to define the region where unambiguous resolution is realized for such sampling schemes. Real data from a frequency-jump burst radar system is used to confirm the theoretical results.