1 Introduction

Unmanned arial systems (UAS), more commonly called drones, are increasingly becoming part of the everyday lives of people. From consumer drones for taking pictures or videos, to commercial drones for near instant delivery of food or household items, drones are integrated and (mostly) accepted in society. Similarly in defense applications, drones have changed the landscape of modern warfare more than any other technology in the past few decades.

The growth of drones brings new challenges for safety, reliability, and detection that have been missing or limited in early models. Just as automobiles progressed in safety standards, drones are also following a similar path. Car manufacturers have increasingly adopted millimeter wave (mmWave) radar as a tool for blind spot awareness, adaptive cruise control, and collision avoidance because it allows for object detection and recognition in all weather environments while being small and cost effective. It is easy to see how this technology could also be applied to several use cases in drones.