There are numerous applications in which it is desirable to be able to detect underwater objects from stand-off distances or remote locations. Some conventional approaches to the detection of underwater objects have included the use of unmanned underwater vehicles (UUVs) that search for objects within the water, and aerial vehicles (such as helicopters) that can drag nets to comb the waters for near-surface objects. Other approaches have involved the use of remote sensors, optionally deployed on buoys, or other relatively-static deployed structures on the surface of the water, that look for objects or indirect indicators of the presence of an object of interest (e.g., a vessel wake); however these methods tend to suffer from low confidence-of-detection, high false alarm rates, and/or low area coverage rates.