Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Parameter state estimation for bistatic sonar systems
 IET radar, sonar & navigation 12 (2018), Nr.8, S.821832 ISSN: 17518784 ISSN: 17518792 

 Englisch 
 Zeitschriftenaufsatz 
 Fraunhofer FKIE () 
Abstract
The use of autonomous underwater vehicles (AUVs) cooperating in a network for antisubmarine warfare surveillance operations is of topical interest. Each AUV has to localise and track targets (submarines) robustly and precisely. This can be realised by a bistatic sonar configuration. The precise knowledge of the bistatic system parameters is mandatory for target tracking. These are in particular the positions of the acoustic sources, transmission times, and the position and heading of the AUV sonar sensor. However, these parameters often are not precisely known, e.g. for noncooperative acoustic sources or due to navigation uncertainties of the AUV. Therefore, the authors consider the inverse problem, i.e. they estimate the bistatic system parameters by exploiting sonar echoes from known stationary `targets' like wrecks or small islands. Their implementation of the estimation method is based on the multihypothesis tracking technique. Results are discussed for two applications: The first one is estimation of the parameters of a noncooperative source. The second application focuses on the estimation of the receiver parameters; in particular they show that their approach can be used to increase robustness of AUV navigation. Their algorithms are tested with simulated and real data recorded by the Centre for Maritime Research and Experimentation.