The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 21, 2020
Filed:
Dec. 09, 2016
GM Global Technology Operations Llc, Detroit, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A system and method of determining a relative velocity of an object at a radar system is disclosed. A transmitter transmits a source signal at the object and a receiver receives an echo signal that is a reflection of the source signal from the object. The echo signal is partitioned into a first portion and a second portion at a processor. A first Doppler frequency is estimated for the first portion and a second Doppler frequency is estimated for the portion. A difference is estimated between the first Doppler frequency and the second Doppler frequency. A presence of a Doppler ambiguity is determined from a comparison of the estimated difference to a selected Doppler frequency. A corrected Doppler frequency is obtained based on the Doppler ambiguity and the relative velocity of the object is determined from the corrected Doppler frequency.