Revised range point migration method for rapid 3-D imaging with UWB radar

Surveillance UWB imaging radar systems require rapid radar imaging methods. One such method, called SEABED, has been demonstrated to work well for simple-shaped targets, but not for complex-shaped targets. To resolve the difficulties, the RPM method was developed to generate better images even for complex-shaped targets, albeit at the cost of processing speeds. This paper proposes an alternative method which is a hybrid of the SEABED and RPM methods that can quickly generate high-quality images for complex-shaped targets. To show its effectiveness, the performances of the three imaging methods are compared using simulations and experiments.