Roger Charles Hart

Title: Innovator Roger Charles Hart: Pioneering Synchronization and Positioning Technologies

Introduction: Roger Charles Hart, located in Gilbert, AZ, is an accomplished inventor with a remarkable portfolio that includes four patents. His work primarily revolves around innovations in clock synchronization and satellite positioning, showcasing his expertise in advanced technologies.

Latest Patents: Among his latest patents, Roger's innovation titled "Apparatus and method for synchronizing a clock using a phase-locked loop circuit" stands out. This system employs a phase-locked loop (PLL) circuit to generate timing errors based on information from multiple sources. The design incorporates gain blocks that weigh these timing errors, integrating them into a loop time error. An oscillator frequency is adjusted according to the loop integrator’s output, which processes feedback from phase detectors receiving timing reference signals. Notably, when a timing error indicates a potential issue, the system can mitigate the impact or suspend frequency adjustments, enhancing reliability, particularly in satellite applications.

Another significant patent is the "Method and apparatus for accurately determining the position of satellites in geosynchronous orbits." This method involves receiving main lobe signals from a first GPS satellite and utilizing a pseudolite on Earth to gather GPS time and Doppler information. By sorting side lobe signals amidst noise, the invention accurately determines the position of satellites in a near geosynchronous orbit, enhancing satellite navigation systems.

Career Highlights: Roger has made significant contributions during his time at high-profile companies such as Motorola Corporation and General Dynamics Decision Systems, Inc. These experiences have undoubtedly enriched his skills and insights into cutting-edge technologies.

Collaborations: Throughout his career, Roger has worked alongside notable professionals, including George Jeffrey Geier and Thomas Michael King. These collaborations have likely fostered innovative ideas and advancements in their respective fields.

Conclusion: Roger Charles Hart's contributions to synchronization and satellite positioning technologies reflect his dedication to innovation. As his patents continue to shape the industry, his work exemplifies the impact of ingenuity in advancing technology.