Research Initiation:  Exploiting Multiple Paths in Passive  Limits on the Utility of Ranging and Inverse Mapping        Applications
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{'SignBlockName': 'John R. Lehmann', 'PO_EMAI': None, 'PO_PHON': None}
This work investigates the use of arrays of sensors for passive                 ranging.  In particular, it focuses on the use of a priori                      knowledge of assumed multipath propagation conditions to improve                range accuracy in the distant region where the curvature of the                 wavefront is only slight.  Significant performance gains have                   been demonstrated in the past in a simplified underwater acoustic               setting.  This study is evaluating the impact of incomplete a                   priori knowledge on the ability to achieve theoretical gains.                   The study also is attempting to extend the method to inverse                    mapping, i.e. determination of the channel parameters from                      signal measurements.
{'FirstName': 'Miriam', 'LastName': 'Hamilton', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Miriam Hamilton', 'EmailAddress': None, 'NSF_ID': '000201634', 'StartDate': '06/01/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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