Positioning and location awareness for pedestrians is becoming increasingly important. However, the technology is immature and there is a need for rigorous testing. This project is studying the effect of pedestrian motion on the performance of common navigation technology, such as GNSS. This will inform the design of both future positioning technology for pedestrian positioning and simulation equipment for testing that technology. Key questions include: What types of motion have a significant impact? What is the effect of the sensor location on the body? Do different individuals affect sensors differently? and What is the dependence on the activity? To answer these, real motion data is being captured using inertial sensors and used to assess the response of GNSS signal-tracking loops to the motion. Project duration: 2011-2015; Sponsor: EPSRC and Spirent; Researcher: Kimon Voutsis.