Abstract: The present invention is a method of determining the time of arrival of an incident signal transmitted utilizing a code word that is interspersed with noise and diffracted and reflected signals of the incident signal. The incident, diffracted and reflected signals and noise are collectively defined as a combined signal. The method comprises receiving the combined signal; obtaining the code word to apply to the combined signal; comparing the combined signal with the code word to filter the incident signal and diffracted and reflected signals arising from the incident signal from the combined signal; utilizing the incident signal and related diffracted and reflected signals to determine a first parameter indicative of the incident signal's time of arrival; and filtering the first parameter utilizing a multipath mitigation algorithm to mitigate the influence of the diffracted and reflected signals to obtain a second parameter indicative of the incident signal's time of arrival.

Abstract: A video image projection system uses an improved cathode ray tube assembly incorporating a projection cathode ray tube within a housing with a light transmissive heat transfer fluid contained within the housing and surrounding the exterior surface of a portion of the cathode ray tube to transfer heat between the cathode ray tube faceplate and a portion of the cathode ray tube bowl. The heat transfer fluid may also cooperate with a novel faceplate structure on the cathode ray tube to store capacitatively an electrical charge to increase the dynamic range of brightness of the projected image.