A Radio System for Avoiding Illuminating Aircraft with a Laser Beam

@article{Coles2009ARS,
  title={A Radio System for Avoiding Illuminating Aircraft with a Laser Beam},
  author={W. A. Coles and T. W. Murphy and J. Melser and J. K. Tu and G. White and K. Kassabian and K. Bales and B. Baumgartner},
  journal={arXiv: Instrumentation and Methods for Astrophysics},
  year={2009}
}
When scientific experiments require transmission of powerful laser or radio beams through the atmosphere the Federal Aviation Administration (FAA) requires that precautions be taken to avoid inadvertent illumination of aircraft. Here we describe a highly reliable system for detecting aircraft entering the vicinity of a laser beam by making use of the Air Traffic Control (ATC) transponders required on most aircraft. This system uses two antennas, both aligned with the laser beam. One antenna has… Expand

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