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Artemisa: New GNSS Receiver Processing Techniques for Positioning and Multipath Mitigation

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Executive Summary

Advances in computation and signal processing technologies allow the implementation sophisticated non-linear synchronization techniques that can be integrated in the acquisition and tracking modules, estimating both Line Of Sight Signal (LOSS) and Multi-Path (MP) echoes. Instead of using an ordinary DLL/PLL, advanced DLLs as the Multipath Estimating Delay Lock Loop (MEDLL), based on maximum likelihood approach can be used for better estimation and mitigation of the Multi-Path. In addition to this, a new architecture of the GNSS control loop can be proposed, in which tracking and positioning are performed in single step, achieving/keeping the synchronization of the loop using the navigation solution.

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