ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,855, issued on Feb. 10, was assigned to Rockwell Collins Inc. (Cedar Rapids, Iowa).

"AESA-based synthetic nulling for enhanced radar ground clutter suppression" was invented by James P. Meinecke (Fayetteville, Ark.), Venkata A. Sishtla (Cedar Rapids, Iowa) and James B. West (Cedar Rapids, Iowa).

According to the abstract* released by the U.S. Patent & Trademark Office: "A radar system uses multiple nulls to improve detection capabilities. Multiple radar pulses are transmitted and or received, each with a different null pattern. The returns from each pulse are averaged together to form a null window that is less noisy and potentially wider than a single null pattern. This approach...