Joseph Chang

Title: Innovations of Joseph Chang in Environmental Monitoring

Introduction

Joseph Chang is an accomplished inventor based in Orange, California. He has made significant contributions to the field of environmental monitoring, particularly in relation to aerial platforms. With a total of three patents to his name, Chang's work focuses on enhancing the safety and efficiency of navigation systems.

Latest Patents

One of Chang's latest patents is titled "System and method for multi-track environmental fault monitoring for aerial platforms." This innovative method involves estimating a normalized squared residual error (NSRE) for each satellite-receiver track over time. The process includes determining an averaged NSRE by averaging the NSRE over multiple time windows and performing a threshold test to establish a filter state. Additionally, it assesses whether to apply a scale factor for each satellite-receiver track based on the filter state.

Another notable patent is "System and method for mitigating against ionospheric gradient threats for aerial platforms." This method repeatedly determines the distance of an aircraft from a landing location. It employs iono-free processing during navigation when the aircraft is at a significant distance from the landing site. As the aircraft approaches, it switches to divergence-free processing to address potential ionospheric threats, ensuring a safe landing.

Career Highlights

Joseph Chang is currently employed at Raytheon Company, where he continues to develop innovative solutions for aerial navigation and environmental monitoring. His expertise in this field has positioned him as a key contributor to advancements in technology that enhance flight safety.

Collaborations

Chang collaborates with talented colleagues, including Shuwu Wu and Andrew J. Thomas. Their combined efforts contribute to the development of cutting-edge technologies in the aerospace sector.

Conclusion

Joseph Chang's work exemplifies the importance of innovation in environmental monitoring for aerial platforms. His patents reflect a commitment to improving navigation safety and efficiency, making significant strides in the aerospace industry.