Velocity estimation of cellular terminals in urban environment using ray tracing

The paper discusses the problem of estimating the velocity of a mobile cellular terminal within an urban, multipath-rich environment, using available geographical information such as terrain and building maps. The method suggested in the paper is the use of ray tracing in order to characterize the propagation environment. The paper discusses the usage of Doppler processing of a signal received from a single antenna and suggests using a two stage algorithm - location followed by velocity estimation. The paper presents an algorithm and an error analysis describing the potential sources of errors encountered in implementation including inaccuracies in the geographical and network databases, measurement accuracy and location accuracy.