Optical depth finder and elements therefor
Abstract
Abstract AN IMPROVED OPTICAL DEPTH FINDER, AND ELEMENTS THEREFOR, FOR DEPTH SOUNDING AND DETECTION OF SUBMERGED TARGETS FROM AN AIRBORNE VEHICLE. THE DISCLOSED SYSTEM USES A COHERENT BEAM OF POLARIZED LIGHT FROM A LASER DIRECTED DOWNWARDLY TOWARD THE SURFACE OF A BODY OF WATER AND PROCESSES THE POLARIZED SURFACE SPECULAR REFLECTED ENERGY, ENERGY REFLECTED BY SUBMERGED TARGETS WITHIN THE BEAM, AND ENERGY REFLECTED BY THE BOTTOM OF THE BODY OF WATER TO DERIVE THE DESIRED INFORMATION. MEANS ARE PROVIDED SELECTIVELY TO ATTENUATE THE REFLECTED ENERGY IN ACCORDANCE WITH THE PARTICULAR SOURCE THEREOF SO AS TO PERMIT THE DYNAMIC RANGE OF THE PROCESSOR OF THE REFLECTED ENERGY TO BE REDUCED AND THE SYSTEM TO BE USED WHEN THE HEIGHT OF THE AIRBORNE VEHICLE CHANGES OR CONDITION OF THE WATER VARIES.
Inventors
- 👤 William J Rattman
- 👤 Frank R Wasson Jr
- 👤 Gordon C Mackenzie
Bibliographic Details
Claims Analysis
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| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |