 These radar systems were fully polarimetric and were generally designed to be mounted on an all-terrain vehicle for mobile applications on the battlefield.Examples of ARL-designed UWB SAR systems include the railSAR, the boomSAR, the SIRE radar, and the SAFIRE radar.The railSAR was among the earliest of the UWB SAR technology at ARL and was constructed as a stationary, rail-guided impulse radar system.