EXTRACTING BISTATIC SCATTERING INFORMATION FROM A MONOSTATIC EXPERIMENT

PDF

Authors
  1. Hines, P.C.
  2. Crowe, D.V.
  3. Ellis, D.D.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
In recent years, interest in bistatic scattering from the seabed has increased dramatically. This poses a challenge for the experimentalist since bistatic experiments are more difficult to perform than are monostatic experiments. Perhaps more importantly, the former are significantly more costly since separating the receiver and the transmitter requires at the very least, separate kits for transmit and receive, and in some cases a second research vessel. For these reasons, it is germane to examine what information about bistatic scattering strength one can obtain using a simple monostatic geometry. In fact, for data arriving at the receiver after the first-surface-first-bottom interaction (S1B1), it will be demonstrated that geometry approximates that of an in-plane bistatic experiment. Previously, Hines and Barry reported on a monostatic backscatter experiment in which data were collected at fours ites onthe Sohm Abyssal Plain. Using a simple array consisting of a free-flooding-ring projector which was omnidirectional in azimuth, and an omnidirectional hydrophone, data were collected over the frequency range of 800 to 2400 Hz using linear FM pulses 200 Hz in bandwidth. The array was deployed to a nominal depth of 5000 m and bottom backscatter data were obtained at grazing angles down to 4 degrees before the onset of the first surface return. TRUNCATED
Keywords
Grazing angle
Date of publication
15 Aug 1997
Number of Pages
38
Reprinted from
J Acoust Soc. Am.
DSTKIM No
98-00045
CANDIS No
506547
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: