Digital Signal Processing and System Theory

Talk Duc Nguyen

Evaluation of Tracking Performance with Respect to Non-Uniformly Distributed Clutter

Date: 08.06.2010, 13:00 h - 14:00 h
Room: Aquarium

Duc Nguyen
Christian-Albrechts-Universität zu Kiel, Kiel, Germany


talk_2010_duc_nguyenThe technological development of submarines has advanced enormously since the end of the second World War. Modern submarines can stay submerged for weeks or even months. In addition they are hardly detectable by radar-tracking systems since electromagnetic waves are absorbed by the water. Hence SONAR, a technology using sound waves, is used to detect and track submarines. Modern submarines are remarkably quiet, making them hard to detect by passive sonar. Therefore, active sonar is used. It can not only detect silent submarines but also has got a high detection range. As a drawback the interaction of sound waves with the seabed and the water surface causes false alarms. To distinguish false alarms from true contacts, Multi-Hypothesis-Tracking (MHT) is applied. The tracking performance of MHT depends, amongst other things, on the clutter density. So far, this parameter has been taking into account as constant.


This Diploma thesis analyzes the impact of a varying clutter density on tracking performance. It presents a way of calculating the clutter density, extensions to existing evaluation methods, and finally the benefits of using a varying clutter density in tracking systems.