Company Filing History:
Years Active: 2012-2017
Title: Innovations by James L Petersen
Introduction
James L Petersen is a notable inventor based in Calgary, Canada, recognized for his contributions to the field of GNSS (Global Navigation Satellite System) technology. With a total of four patents to his name, Petersen has developed innovative solutions that enhance the accuracy and reliability of positioning systems.
Latest Patents
Petersen's latest patents include a GNSS positioning system that features an anti-jamming antenna. This system utilizes a carrier phase correction sub-system designed for GNSS receivers. The sub-system employs an active null and beam steering controlled radiation pattern antenna (CRPA) to determine carrier phase corrections that compensate for antenna phase center movements. This innovation allows the GNSS receiver to utilize known RTK techniques to resolve carrier cycle ambiguities effectively.
Another significant patent involves a system for determining precise position using a chirp receiver that processes broadcast chirp signals. This system distinguishes direct path signals from multipath signals by combining received chirp signals with a synchronized locally generated chirp signal. The phase adjustment and concatenation of these signals enable the use of longer Fast Fourier Transforms (FFTs), which enhance the accuracy of frequency estimation and allow for the identification of component signals that are very close in frequency.
Career Highlights
Throughout his career, James L Petersen has worked with prominent companies such as Novatel Inc. and Wi-Lan Inc. His experience in these organizations has contributed to his expertise in GNSS technology and positioning systems.
Collaborations
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Conclusion
James L Petersen's innovative work in GNSS technology showcases his commitment to advancing the field of positioning systems. His patents reflect a deep understanding of the challenges in this area and provide solutions that enhance accuracy and reliability.