Sun Hur-Diaz

Title: Innovations of Sun Hur-Diaz in Satellite Technology

Introduction

Sun Hur-Diaz is an accomplished inventor based in Austin, TX (US). She has made significant contributions to the field of satellite technology, holding a total of 4 patents. Her work focuses on enhancing the efficiency and reliability of satellite operations, particularly in challenging environments.

Latest Patents

One of her latest patents is titled "Practical orbit raising system and method for geosynchronous satellites." This innovative method allows a satellite to quickly escape the Van Allen radiation belts while maximizing payload mass and mission life. The system employs high thrust chemical propulsion thrusters and high specific impulse electric propulsion thrusters, along with a solar array, to achieve its objectives. The satellite is launched into a transfer orbit and utilizes these thrusters to successively raise its perigee until it clears the radiation belts. Once in a near-synchronous orbit, the electric propulsion thrusters are activated to maintain optimal solar illumination and achieve geosynchronous orbit.

Another notable patent is "Robust autonomous GPS time reference for space application." This invention provides a real-time navigation solution for spacecraft, even when fewer than four GPS satellites are visible. By employing a Kalman filter, the system accurately estimates clock bias using the dynamic motion of the satellite and available GPS signals. This technology ensures a reliable GPS time reference by transferring timing information from an atomic reference standard to the spacecraft without relying on multiple satellite signals.

Career Highlights

Sun Hur-Diaz has worked with reputable organizations, including Space Systems/Loral, LLC. Her experience in these companies has allowed her to develop and refine her innovative ideas in satellite technology.

Collaborations

Throughout her career, she has collaborated with notable professionals such as Ahmed A Kamel and Thomas J Holmes. These partnerships have contributed to her success and the advancement of her inventions.

Conclusion

Sun Hur-Diaz is a pioneering inventor whose work in satellite technology has led to significant advancements in the field. Her innovative patents demonstrate her commitment to improving satellite operations and navigation systems.