Directional separation of ultrasonic signal

The paper presents an approach to a problem of emitters localization. The emitters are localized in the sense of direction from which a signal arrives to a receiver. The advantage of the approach is that signals arriving from different sources can be received concurrently. An object reflecting a signal returning to a receiver can be also treated as an emitter. Therefore solution of the problem is very important in Robotics. It can be used for obstacle detection. This is the essential problem of mobile robot navigation. This technique can be also very useful to support mobility of blind persons. In the paper the most important features of the approach are discussed and preliminary experimental results are presented.