The goal of our AFOSR proposal was to study the feasibility, characteristics and limitations of using two Airborne Laser Scanners (ALS) mounted on an Uninhabited Airborne Vehicle (UAV) to aid its Inertial Measurement Unit (IMU) in unknown terrain environments. One area of interest to AFRL is the ability to navigate in GPS-denied environments where prior information about the terrain the UAV is traversing, is unknown. Conventional TRN schemes are inadequate ...
This paper presents an analysis of GPS CA code self-interference, its impact on the acquisition of weak GPS signal when coexisting with strong GPS signals, and means to mitigate the interference to allow successful acquisition of the weak GPS signals using software GPS receivers. Current software GPS receivers are capable of acquiring and tracking satellite signals with C/N0 as low as 24 dB, which is the sensitivity limit of a ...
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