Fiber optic relayed laser radar

Michael M. Tilleman; David B. Oakes; Kannan Krishnaswami

doi:10.1117/12.216960

18 August 1995 Fiber optic relayed laser radar

Michael M. Tilleman, David B. Oakes, Kannan Krishnaswami

Proceedings Volume 2562, Radar/Ladar Processing and Applications; (1995) https://doi.org/10.1117/12.216960
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

We present a new ladar (laser radar) for the detection of objects off the line-of-sight. This is accomplished by a transceiver and a fiberoptic cable that relays an outgoing laser beam to, and a returning signal from a target. The transmission signal is a laser diode emitted beam at 1550 nm, ideal from the aspects of both eyesafety and minimum loss in a silica fiber. In our immediate application, the detection of an obstacle on the railroad track of a high-speed train, the laser pulses propagate through air and the fiberoptic cable, successively. Under a variety of simulated weather conditions and by traversing twice through a 2 km fiber, we measured a signal-to-noise of 300.

Citation Download Citation

Michael M. Tilleman, David B. Oakes, and Kannan Krishnaswami "Fiber optic relayed laser radar", Proc. SPIE 2562, Radar/Ladar Processing and Applications, (18 August 1995); https://doi.org/10.1117/12.216960

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