A paper submitted by the authors at the OCEANS '98 describes a variation of the spatial interferometric technique that relies upon projected spatial gratings with subsequent detection against a quasi-coherent return signal. The method is advantageous in not requiring temporal coherence between reference and signal beams and may use a continuous illumination source. Coherency of the spatial beam allows detection of the direct return, while scattered light appears as a noncoherent noise term. The theoretical foundation of the method and the initial results for turbid media were developed. This paper presents the latest ongoing research results.
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This manuscript is available at http://ieeexplore.ieee.org/ and may be cited as: Caimi, F. M., Bailey, B. C., & Blatt, J. H. (1999). Undersea object detection and recognition: the use of spatially and temporally varying coherent illumination. Oceans'99 MTS/IEEE: Riding the crest into the 21st century. (Vol. 3, pp. 1474-1479). Washington, DC: Oceans'99 MTS/IEEE Conference Committee. doi:10.1109/OCEANS.1999.800211
Florida Atlantic University. Harbor Branch Oceanographic Institute contribution #1309.