Second Time around Echo Immunity from Pseudo Stereoscopic Holographic Imaging
The idea of using two widely-spaced co-linear arrays as a means of obtaining high resolution imagery of the sea-bed has recently been proposed and explored [1,2]. The pseudostereoscopic holographic imaging system used is typically configured as shown in Fig.l and provides a sideways-looking mode of underwater mapping. Although there are apparent similarities between this arrangement and the side scan sonar, the new approach is not reliant on forward motion of the transducer arrays. Consequently it. can also be used to image its environment from a static location, thus exhibiting a characteristic common with other forms of ultrasonic imaging systems [3,4].
KeywordsTransducer Array Target Distribution Data Acquisition Time Acoustical Holography High Resolution Imagery
Unable to display preview. Download preview PDF.
- 1.Shaw, D.I., Anderson, A.P., Bennett, J.C. : “Pseudostereo- scopic holographic imaging system : a possible approach to high resolution underwater mapping”, Electronics Letters, 29th October 1981, Vol.17, No.22, pp.841–842Google Scholar
- 2.Shaw, D.I., Anderson, A.P., Bennett, J.C. : “Experimental validation of a pseudostereoscopic holographic system for underwater mapping”, Proc. Institute of Acoustics, Underwater Acoustics Group, Portland, December 1981, pp.4/1–4/7Google Scholar
- 4.Hildebrand, B.P. : “Advances in acoustical holography”, Proc. Soc. Photo-Optical Instrumentation Engineers, 1980, Vol.215, pp.116–128Google Scholar
- 5.Skolnik, M.I. : “Introduction to radar systems”, McGraw-Hill, 1962, pp.130–131Google Scholar