Modeling and Validation of a 915MHz Single Channel Pseudo Doppler Direction Finding System for Vehicle Applications

In this work, a simulation model of a single channel Pseudo Doppler (PD) radio frequency (RF) direction finding system for vehicle localization is presented. The model consists of two major parts: the channel model and the receiver model. The simulation model results are correlated with measurements from a prototype system mounted on a sedan, located in an open field, in four different locations. The measurements were taken at 36 distinct transmitter locations around a circle with a radius of 20 meters and a height of 1.2 meters. Both the model and the measurements produced consistent results in which the exterior roof location exhibited low mean and low standard deviation results in comparison with significantly worse results in terms of the mean and standard deviation for the three interior locations. The methodology and numerical results are described in the paper.