Patent 7495996 was granted and assigned to Lockheed Martin on February, 2009 by the United States Patent and Trademark Office.
A method of estimating velocity with a correlation SONAR that provides improved velocity estimate due to a reduction in random and bias errors is disclosed. The method generates a velocity estimate based on a weighted average of pulse-pairs that includes processing of those pulse-pairs based on an optimal correlation time as well as pulse-pairs based on sub-optimal correlation times.