Bretton Lee Douglas

Title: Bretton Lee Douglas: Innovator in Navigation and Soil Analysis Technologies

Introduction

Bretton Lee Douglas is a notable inventor based in Santa Barbara, CA. He has made significant contributions to the fields of navigation and soil analysis through his innovative patents. With a total of 2 patents, Douglas continues to push the boundaries of technology.

Latest Patents

One of his latest patents is titled "Super short baseline navigation using phase-delay processing." This invention employs a short baseline navigation system that utilizes real-time estimation of the positions of multiple cooperative targets. Each target transmits a unique stepped frequency sequence signal that covers the usable frequency band. A processor analyzes the reply signals received by elements on the tracking platform, developing a coarse time-difference-of-arrival estimate using a specialized algorithm. The processor also estimates the Doppler shift of received signals and determines a time-window that eliminates portions of the signals corrupted by multipath interference. The relative phase differences between the received signals are then used alongside the coarse time-difference-of-arrival estimates for precise direction-of-arrival estimation.

Another significant patent is the "Method and apparatus for determining soil strength from Doppler-shifted signals." This invention involves a signal processing system that determines sea floor composition based on the frequency waveform and Doppler shift transmitted from an acoustic penetrometer. A hydrophone receives the penetrometer waveform, which is then digitized and analyzed by a general-purpose computer using a signal processing program. This program performs various signal transformations to enhance the quality of the input waveform and isolates a penetration event. The input signal is converted to an equivalent velocity waveform, and a curve fitting algorithm identifies the initiation and termination points of the penetration event. The depth of penetration is calculated through numerical integration, allowing for characterization of the sea floor composition at the impact point.

Career Highlights

Bretton Lee Douglas has established himself as a key figure in his field, particularly through his work at Sonatech, Inc. His innovative approaches have garnered attention and respect within the industry.

Collaborations

Douglas has collaborated with notable colleagues, including Marvin Lee Watson and Chester DeWitt Loggins, Jr. These partnerships have contributed to the advancement of his projects and innovations.

Conclusion

Bretton Lee Douglas is a distinguished inventor whose work in navigation and soil analysis technologies has made a significant impact. His patents reflect a