"Just as buildings make a unique visual impression, they also impart a unique radio shadow loss at each mobile location to signals from surrounding base stations. The Wireless Location Signatures method makes use of the unique shadowing properties of buildings to determine where a mobile is. Other methods, such as GPS and TDOA, were created for line-of-sight propagation conditions and are degraded or defeated by shadowing. The Polaris Wireless Location Signatures System makes use of what is a unique feature of cities, rather than trying to force a line-of-sight solution into the shadows."

Professor Henry L. Bertoni, Polytechnic University
leading expert on radio propagation and modeling

Victor Chun, Chief Financial Officer

Victor Chun has more than 20 years of experience in financial management, investment and control, with TecMagik Inc., Tandem Computers, Bank of America and Atari International.

Mr. Chun earned an MBA from San Francisco State University and BS in Chemical Engineering from the University of California at Berkeley.


Dr. Steve Spain, Chief Technology Architect

Dr. Spain has more than 25 years of experience in the development of estimation, control and signal processing applications for defense and commercial customers. He has worked for companies including Tera Research, Integrated Systems, Inc., Advanced Decision Systems, ESL Inc and Systems Control Inc. He was the principal developer of Polaris's location algorithm and holds several patents for his invention.

Dr. Spain earned BS, MS and PhD degrees in electrical engineering from Stanford University.

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