Winter, S. (2021). Tracking Urban Mobility. In S. Winter & S. Goel (Eds.), Smart Parking in Fast-Growing Cities (pp. 22–41). TU Wien Academic Press. https://doi.org/10.34727/2021/isbn.978-3-85448-045-7_3
Within the coordinate reference systems discussed in the previous chapter, location can be described.
Location data is increasingly becoming available from sensors integrated in urban mobility:
sensors that are attached to travelers or vehicles, or even to fix locations registering travelers or vehicles
passing by. This chapter will introduce some tracking technologies and their properties, and
then define the notion of a trajectory, with its critical properties of spatial and temporal granularity
(precision and sampling rate), and accuracy (linked to map matching). In addition, the chapter introduces
the two complementary frames of references for tracking urban mobility, the Lagrangian and
the Eulerian, and how to convert between them.
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