Patent ID: 7242342

Claim:
A system for obtaining frequency domain interferometric super-resolution of a target scatterer, comprising: a first coherent transceiver operating on a first sub-band, the first coherent transceiver being operative to produce a plurality of first sampling signals separated from each other by a predetermined frequency difference within the first sub-band; a second coherent transceiver operating on a second sub-band, the second coherent transceiver being operative to produce a plurality of second sampling signals separated from each other by the predetermined frequency difference within the second sub-band; a sub-system coupled to the first and second coherent transceivers, the sub-system being operative to receive phase and amplitude of the first and second sampling signals, so as to evaluate an ambiguous range estimate from a pair of the first and second sampling signals and an unambiguous range estimate from a pair of the first, the second or the first and second sampling signals; and an estimation system coupled to the sub-system to reconcile the ambiguous and unambiguous range estimates so as to obtain a target signature with a super-resolution defined by a frequency offset between the first and second sub-bands.