I have 27 years of experience, and specialize in the field of global positioning systems (GPS) with specific knowledge in the areas of Kalman filtering, inertial navigation and embedded software. I have published on such topics as measurement fault detection, navigation performance analysis and covariance error models. I have testified on navigation algorithms, matched-filter architecture and assisted global positioning systems (GPS). I have an unusual combination of technical expertise, communication skills, and IP familiarity. I have 17 issued US patents, and I am a patent agent. My clients get an edge in that I understand the technology and key claim language elements.