Joint Processing of Multi-band Signals with Information Assurance

ABSTRACT: The Nu-Trek team will develop an"Assured Integrity (AI) GNSS Navigator". The AI GNSS Navigator includes both the algorithms required to effectively interpret the GNSS signals with high degrees of accuracy and information assurance as well as the GNSS receiver that is required to effectively acquire the GNSS signals. Current GPS receiver designs utilize separate code and carrier tracking loops, one for each signal. However, tracking all GNSS signals from a joint tracking loop offers numerous advantages. Current GPS receivers also use separate, narrow band, front end electronics to track each frequency. To complement the coordinated tracking loop, a wide band, coordinated GNSS front end will be designed. The AI GNSS navigator will interrogate the GNSS signals and provide the user with several categories of operation status pertaining to the integrity and level of assurance of the navigation solution. In Phase I Nu-Trek will develop the information assurance methodology and algorithms, demonstrating the improved navigation accuracy and ability to detect and eliminate jamming and spoofing. A top level design of the correlated GNSS Receiver will also be performed. In Phase II a prototype receiver will be demonstrated with select algorithms. BENEFIT: The Nu-Trek team will develop an"Assured Integrity (AI) GNSS Navigator". The AI GNSS Navigator includes both the algorithms required to effectively interpret the GNSS signals with high degrees of accuracy and information assurance as well as the GNSS receiver that is required to effectively acquire the GNSS signals. This is a very forward looking hardware and software development program, as in 5-10 years GNSS navigation will become commonplace. Also, the Nu-Trek approach, in which the algorithms are complemented with a dedicated AI GNSS front is very enabling, without such a front end the number of signals that can be utilized will be limited to a small fraction of the available signals.