John W Murphy

Title: The Innovative Mind of John W. Murphy

Introduction

John W. Murphy, an accomplished inventor from Cedar Rapids, Iowa, has made significant contributions to the field of global positioning systems (GPS). With a total of six patents to his name, his work reflects a deep understanding of technology and innovation, particularly in enhancing positioning systems.

Latest Patents

Among his latest inventions, Murphy has developed a GPS augmentation system using time offset code modulation. This innovative positioning system incorporates a time offset into pseudo-random noise codes, allowing a transmitter from a pseudo satellite to send these codes to a receiver. The receiver recognizes these codes with the offset, which is typically applied over one or more hours. By knowing the offset value, the receiver can acquire the signal to determine its position and distance more effectively. This method enables conventional receivers to ignore the time offset signal by selecting an appropriate time offset greater than their searching time, enhancing their accuracy.

Additionally, Murphy's patent for a system and method for attitude determination in GPS is noteworthy. This system includes at least two receivers and an attitude determination circuit. Each receiver is equipped with an antenna capable of receiving GPS signals, producing representations of these signals. By estimating the rate of change in distance from a GPS satellite to the antenna, the attitude determination circuit calculates the platform's attitude, further advancing the capabilities of GPS technology.

Career Highlights

Throughout his career, John W. Murphy has worked with notable companies such as Rockwell Collins, Inc. and Rockwell International Corporation. His experiences in these organizations have played a pivotal role in shaping his innovative approaches and technological advancements in GPS.

Collaborations

Murphy has collaborated with esteemed colleagues, including Steven D. Deines and David K. Vail, Jr. These partnerships have further enhanced his work, contributing to the development of groundbreaking technologies in positioning systems.

Conclusion

John W. Murphy's contributions to the field of innovations and inventions in GPS technology underscore his role as an influential inventor. With a solid portfolio of patents and a career marked by collaboration and advancement, Murphy's work continues to leave a lasting impact in the realm of positioning systems, paving the way for future innovations in the industry.