TY - GEN
T1 - Virtual time-reversal processing for source localization in shallow water
AU - Zhang, Tongwei
AU - Yang, Kunde
AU - Ma, Yuanliang
PY - 2010
Y1 - 2010
N2 - Matched-field processing (MFP) is a forward propagation process that consists of systematically placing a test point source at each point of a search grid, computing the replica vectors on the array and then correlating these replicas with the data from the real source. It will cost much time to calculate all these replica vectors corresponding to the search grids. Time-reversal processing (TRP) is an implementation of MFP where the ocean itself is used to construct the replica field. This paper introduces a virtual time-reversal processing (VTRP) that is implemented electronically at the receiver array and simulates the kind of processing that would be done by an actual TRP during the reciprocal propagation stage. Apart from MFP, VTRP is a back-propagation process which exploits the properties of reciprocity and superposition. Thus, the calculation of the replica surface generated by each virtual source at the corresponding array element location can be speeded up by matrix manipulation. As a result, the localization surface of VTRP can be formed faster than that of MFP. The performance of VTRP for source localization is validated through the numerical simulations.
AB - Matched-field processing (MFP) is a forward propagation process that consists of systematically placing a test point source at each point of a search grid, computing the replica vectors on the array and then correlating these replicas with the data from the real source. It will cost much time to calculate all these replica vectors corresponding to the search grids. Time-reversal processing (TRP) is an implementation of MFP where the ocean itself is used to construct the replica field. This paper introduces a virtual time-reversal processing (VTRP) that is implemented electronically at the receiver array and simulates the kind of processing that would be done by an actual TRP during the reciprocal propagation stage. Apart from MFP, VTRP is a back-propagation process which exploits the properties of reciprocity and superposition. Thus, the calculation of the replica surface generated by each virtual source at the corresponding array element location can be speeded up by matrix manipulation. As a result, the localization surface of VTRP can be formed faster than that of MFP. The performance of VTRP for source localization is validated through the numerical simulations.
UR - https://www.scopus.com/pages/publications/78349263102
U2 - 10.1109/OCEANSSYD.2010.5603670
DO - 10.1109/OCEANSSYD.2010.5603670
M3 - 会议稿件
AN - SCOPUS:78349263102
SN - 9781424452217
T3 - OCEANS'10 IEEE Sydney, OCEANSSYD 2010
BT - OCEANS'10 IEEE Sydney, OCEANSSYD 2010
T2 - OCEANS'10 IEEE Sydney, OCEANSSYD 2010
Y2 - 24 May 2010 through 27 May 2010
ER -