David A Marquis

Title: David A Marquis: Innovator in Radar Technology

Introduction

David A Marquis is a notable inventor based in Medford, MA (US). He has made significant contributions to the field of radar technology, holding a total of 2 patents. His work focuses on improving radar systems, which are essential for various applications in defense and surveillance.

Latest Patents

One of Marquis's latest patents is a CW radar range measuring system with improved range resolution. This system features a transmitter that transmits a continuous wave radar signal, which is phase encoded according to a specific code. The receiver is designed to capture the radar return from the transmitted signal and includes an analog to digital converter section. This section converts a sequence of samples of the radar return into digital words. A digital correlator/integrator processes these digital words to provide an indication of radar return energy based on the range from the transmitter. Additionally, the system incorporates a frequency spectrum analyzer to determine the target Doppler frequency.

Another significant patent by Marquis is a radar system that transmits a series of radio frequency (RF) pulses with incrementally changing carrier frequencies. The receiver captures energy from multiple scattering points of an object reflecting the transmitted RF pulses. This system allows for precise tracking of range and velocity, utilizing a heterodyning section that produces pulsed signals for each scattering point. The processor then determines the range tracking error and velocity tracking error for each point, enhancing the accuracy of radar measurements.

Career Highlights

David A Marquis has had a distinguished career, working at Raytheon Company, a leader in defense and aerospace systems. His expertise in radar technology has contributed to advancements in various military and civilian applications. His innovative solutions have played a crucial role in enhancing the capabilities of radar systems.

Collaborations

Throughout his career, Marquis has collaborated with several professionals in the field. Notable coworkers include Shaun Carnes, who is deceased, and Mark E Russell. These collaborations have fostered an environment of innovation and have led to the development of cutting-edge radar technologies.

Conclusion

David A Marquis is a prominent inventor whose work in radar technology has significantly impacted the industry. His patents reflect a commitment to advancing radar systems, making them more efficient and accurate. His contributions continue to influence the field and inspire future innovations.