My contribution to the project X-Sense 2 will in a first instance focus on a fast and reliable detection of small and rapid movements with GNSS sensors, which are triggered by a MEMS acoustic sensor. Once a movement is detected, a positioning solution with an adequate accuracy shall be provided rapidly, which aims at a fast solution of the so called GNSS phase ambiguities. I really enjoy working on this topic, because it combines my interests in both engineering and scientific tasks.