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A novel configuration for improving the frequency tracking performance of GNSS signals in multipath environments is proposed. The proposed technique is based on combining the weakly correlated outputs of Early, Prompt and Late match filters to exploit the inherent time-delay diversity when severe multipath conditions prevail. By observing more code-phase offsets simultaneously, the loop is more resilient...
GNSS (Global Navigation Satellite System) signal reception in indoor environments is susceptible to spatial fading and signal attenuation. An antenna array utilizing spatial diversity can be implemented to improve detection performance which reduces the required fading margin. However for the typical handheld GNSS receiver, constrained to a single antenna, spatial processing gain is possible only...
Size and cost considerations of handheld terminals limit the use of antenna array for combating multipath fading in these applications. Recently, a synthetic array based on moving a single antenna was proposed for handheld terminals. This technique however fails to provide enough diversity gain when the channel is spatially correlated. A combination technique based on merging polarization and spatial...
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