Active position security through dynamically tunable radar

Acquiring and securing position information is of fundamental importance in vehicular ad hoc networks and their applications. Recently, it has been shown that securing position information can be achieved by enlisting the help of on-board radar devices that have seen a phenomenal penetration of the vehicular market. However, most on-board radar devices have a static range and this can cause a number of insecurities and can add to communication delay. The main contribution of this work is a novel low-cost radar model which can dynamically tune its range by changing the signal sample size. As it turns out, the dynamically-tunable radar considerably enhances position security.