Field tests for round-trip imaging at a 1.4 km distance with change detection and ranging using a short-wave infrared super-continuum laser
| Autor: | Kevin Ke, Frank Baxley, Mohammed N. Islam, Hyatt B. Baker, Michael J. Freeman, Lauren M. Peterson, Michael A. Rucci, James D. Leonard, Agustin I. Ifarraguerri, Christopher Bailey, Anthony Absi, Michael Wager |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Infrared business.industry Materials Science (miscellaneous) Cloud cover Irradiance Hyperspectral imaging Ranging 02 engineering and technology Laser 01 natural sciences Industrial and Manufacturing Engineering law.invention Supercontinuum 010309 optics 020210 optoelectronics & photonics Optics law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Business and International Management business Change detection Remote sensing |
| Zdroj: | Applied optics. 55(7) |
| ISSN: | 1539-4522 |
| Popis: | Field tests have been conducted of a broadband illuminator for active hyperspectral imaging (HSI) using a short-wave infrared supercontinuum laser (SWIR-SCL). We demonstrated irradiance comparable to the sun for two-way measurements at a 1.4 km distance between laser and target, and performed change detection and ranging. The experimental results suggest that the range resolution of our method is ∼1.5 cm even at the 1.4 km distance. Hence, we demonstrated the possibility to perform HSI with active broadband illumination using the SWIR-SCL. To our knowledge, this experiment is the first-ever to test two-way propagation of the active HSI illumination over a long distance. The 64 W SWIR-SCL provides near sunlight-equivalent illumination over multiple square meters, and the laser could enable HSI 24 h a day, even under a cloud cover, as well as enhanced capabilities such as change detection and ranging. |
| Databáze: | OpenAIRE |
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