ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,430, issued on July 28, was assigned to u-blox AG (Thalwil, Switzerland).

"Processing a GNSS signal based on doppler estimates" was invented by Zhenlan Cheng (Thalwil, Switzerland), Maxim Koehler (Thalwil, Switzerland) and Alessandro Biason (Sgonico, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "Processing a Global Navigation Satellite System (GNSS) signal that is received at a receiver includes, e.g., initializing a carrier phase of a local carrier signal for a current epoch and based on a first Doppler estimate, in which the first Doppler estimate is derived from a measurement gathered in a previous epoch. The carrier phase then is updated ...