Crossed Linear Arrays Using Doppler Radar Beamforming for Detecting Single Moving Targets

In machine vision and robotic system, moving object tracking is an important issue. Much research effort has been put to subtract moving objects from background and find out the location, speed and features of the objects. Variety of image processing methods and variety of sensors have been applied. Especially, radar and acoustic radar system have a good capability in detecting the position and speed of objects. Usually, long-range, high accurate radars are not equipped into robotic system due to the large size and high production cost. In this chapter, we first review radars which are used to detected human, vehicle and other objects in our daily lives. Then we proposed a low cost crossed linear arrays using acoustic Doppler radar beamforming method. Designs and methods are both described in theory and practical hardware. The results show that the proposed method has a good ability to detect a single moving target.