Accession Number : ADA600399


Title :   Detection of Underwater UXOs in Mud


Descriptive Note : Final rept.


Corporate Author : CENTRAL ORGANISATION FOR APPLIED SCIENTIFIC RESEARCH IN THE NETHERLANDS TNO THE HAGUE


Personal Author(s) : Hunter, A J ; Vossen, R van ; Quesson, B A ; Beckers, A L


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a600399.pdf


Report Date : Apr 2013


Pagination or Media Count : 80


Abstract : One of the most problematic areas where unexploded ordnance (UXO) can be situated is in an underwater environment, buried in sediment. Since burial frequently occurs in silt or mud, it is of great importance to have a capability for the detection of UXO in such buried conditions. This project considers detection of objects buried in mud using a side-looking low frequency (LF) sonar system mounted on a boat. The detection of buried UXO with a LF side-looking sonar system, however, is a challenging problem. This is primarily caused by high reverberation and possible clutter. In addition, the amplitude of the target echo of an object is reduced by burial. For these conditions, dedicated processing has to be developed for the detection of UXO and other targets of interest, and for the subsequent discrimination between targets and clutter contacts. In this project robust and advanced processing techniques are developed with the objective to improve detection and classification in operational conditions. These techniques have been demonstrated on experimental data.


Descriptors :   *BURIED OBJECTS , *MUD , *SIDE LOOKING SONAR , *SYNTHETIC APERTURE SONAR , *UNDERWATER OBJECTS , *UNEXPLODED AMMUNITION , ALGORITHMS , BEAM STEERING , DATA PROCESSING , INTERFEROMETRY , LOW FREQUENCY , MOTION , RESONANCE , REVERBERATION , SEA CLUTTER , TARGET DISCRIMINATION , WAVELET TRANSFORMS


Subject Categories : Navigation, Detection and Countermeasures
      Acoustic Detection and Detectors
      Ammunition and Explosives


Distribution Statement : APPROVED FOR PUBLIC RELEASE