Long-range airborne detection of small floating objects

Henry H. Suzukawa Jr.; Morton S. Farber

doi:10.1117/12.211316

20 June 1995 Long-range airborne detection of small floating objects

Henry H. Suzukawa Jr., Morton S. Farber

Proceedings Volume 2496, Detection Technologies for Mines and Minelike Targets; (1995) https://doi.org/10.1117/12.211316
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

Buoys in the open ocean are clearly observed from a range of 90 km with an airborne IR sensor. A simple model which predicts the observed contrast between small floating objects and the sky radiance reflected from the ocean surface at shallow depression angles has been developed. The detectability of the floating object can be predicted as a function of the percentage of the object that is above the water surface and the size of the object. The model treats the surface object as a black-body at the ambient ocean temperature and predicts the Fresnel reflection of the sky radiance from the ocean surface. Model predictions for the radiance contrast between the ocean and the object have been compared to the observations and are in good agreement. Using a time sequence of the IR images, 3D space-time detection processing shows the potential for further improvement of the detectability of these small objects.

Citation Download Citation

Henry H. Suzukawa Jr. and Morton S. Farber "Long-range airborne detection of small floating objects", Proc. SPIE 2496, Detection Technologies for Mines and Minelike Targets, (20 June 1995); https://doi.org/10.1117/12.211316

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