Company Filing History:
1 out of 14 
1 out of 821 
Years Active: 1988-1994
Title: The Innovations of Earl L Hammerquist
Introduction
Earl L Hammerquist is a notable inventor based in Thousand Oaks, California. He has made significant contributions to the field of radar technology, holding two patents that showcase his innovative approach to passive radar systems. His work has implications for both military and civilian applications, enhancing the capabilities of radar technology.
Latest Patents
Hammerquist's latest patents include "Passive Monopulse Ranging to a Non-Cooperative Emitter" and "Phase Measurement Ranging." The first patent describes a radar system designed for the passive determination of range to a non-cooperative scanning radar and a non-emitting object. This system utilizes a passive array with beam forming and a switching matrix to provide output signals based on angular discrimination. The resolver circuits in this system respond to various parameters, including the angle between the emitter and object vector, the time between direct reception and reflected echo, and the emitter's scan rate.
The second patent, "Phase Measurement Ranging," outlines a passive radar ranging system that employs an antenna system to receive radiated electromagnetic energy from an emitter source. This system includes a translation resolution system and a digital computation system for making phase measurements of the received energy. The phase measurements are crucial for determining the instantaneous range from the emitter source to the measurement platform, whether it is fixed or moving.
Career Highlights
Throughout his career, Hammerquist has worked with prominent companies, including ITT Gilfillan, a division of ITT Corporation, and ITT Corporation itself. His experience in these organizations has allowed him to develop and refine his innovative radar technologies.
Conclusion
Earl L Hammerquist's contributions to radar technology through his patents demonstrate his expertise and innovative spirit. His work continues to influence advancements in passive radar systems, showcasing the importance of his inventions in modern technology.
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