Richard S Hujsak

Title: Innovations by Richard S. Hujsak

Introduction

Richard S. Hujsak is an accomplished inventor based in Exton, Pennsylvania. He has made significant contributions to the field of global positioning systems (GPS) through his innovative patents. With a total of two patents to his name, Hujsak's work focuses on enhancing the precision and efficiency of GPS technology.

Latest Patents

Hujsak's latest patents include a method for refining state estimates of a GPS receiver based on sequential GPS carrier phase measurements. This invention utilizes sequential GPS Doppler carrier phase count measurements to achieve precise determination of position and velocity for GPS receivers. The method addresses several challenges associated with prior art orbit determination, such as the 'cycle slip' problem and the unknown initial range problem. Additionally, it significantly reduces carrier signal phase variation caused by the rotation of the receiver antenna relative to the transmitter antenna.

Another notable patent by Hujsak is the GPS carrier phase measurement representation and method of use. Similar to his previous patent, this invention employs sequential GPS Doppler carrier phase count measurements for accurate position and velocity determination. The optimal sequential filter and fixed-lag smoother enable real-time and near-real-time performance, respectively. This innovation also tackles issues related to serial correlation in measurements due to overlapping thermal noise.

Career Highlights

Richard S. Hujsak is associated with Analytical Graphics Inc., where he continues to develop cutting-edge technologies in GPS and related fields. His work has been instrumental in advancing the capabilities of GPS systems, making them more reliable and efficient for various applications.

Collaborations

Hujsak has collaborated with notable colleagues, including James R. Wright and William A. Chuba. Their combined expertise has contributed to the successful development of innovative solutions in the realm of GPS technology.

Conclusion

Richard S. Hujsak's contributions to GPS technology through his patents demonstrate his commitment to innovation and excellence. His work not only addresses existing challenges but also paves the way for future advancements in the field.