Richard W Marsh

Title: The Innovations of Richard W Marsh

Introduction

Richard W Marsh is an accomplished inventor based in Silver Spring, MD (US). He has made significant contributions to the field of signal processing, particularly in enhancing the accuracy of time of arrival measurements in various systems.

Latest Patents

Marsh holds a patent for "Constant ratio coding for multipath rejection and ECCM enhancement." This innovative method involves encoding signals for transmission to achieve specific autocorrelation properties while maintaining low predictability. The technique is designed to improve the accuracy of measurements in the presence of noise or multipath interference, such as skywaves in systems like LORAN. By constructing codewords from an Nth difference constant ratio codeword, the method ensures low autocorrelation function values at time offsets that correspond to the expected delay between direct waves and skywaves. This approach results in a transmitted signal that is difficult for unintended recipients to predict, thereby reducing the effectiveness of jamming and electronic countermeasures.

Career Highlights

Marsh's work is associated with the United States of America as represented by the Director, National. His innovative contributions have been pivotal in advancing technologies related to signal transmission and reception.

Collaborations

Marsh has collaborated with notable colleagues, including Robert L Ward and Ronald M Benincasa, who have also contributed to advancements in the field.

Conclusion

Richard W Marsh's innovative work in signal processing exemplifies the impact of inventive thinking on technology. His patent for constant ratio coding showcases his commitment to enhancing communication systems and improving their resilience against interference.