Simulation comparison of aircraft landing performance in foggy conditions aided by different UV sensors.

In the atmosphere pointlike sources are surrounded by an aureole due to molecular and aerosol scattering. UV phase functions of haze droplets have a very important forward peak that limits signal angular spreading in relation to the clear atmosphere case where Rayleigh scattering predominates. This specific property can be exploited using solar blind UV source detection as an aircraft landing aid under foggy conditions. Two methods have been used to compute UV light propagation, based on the Monte Carlo technique and a semi-empirical approach. Results obtained after addition of three types of sensor and UV runway light models show that an important improvement in landing conditions during foggy weather could be achieved by use of a solar blind UV intensified CCD camera with two stages of microchannel plates.

[1]  Grigory I. Vishnevsky,et al.  Design and fabrication technology of thinned backside-excited CCD imagers and the family of the intensified electron-bombarded CCD image tubes , 1995, Optics & Photonics.

[2]  Brian M. Sadler,et al.  Ultraviolet Communications: Potential and State-Of-The-Art , 2008, IEEE Communications Magazine.

[3]  R. Reich,et al.  Advanced CCD imager technology for use from 1 to 10 000 Å , 1990 .

[4]  Robert H. Giza,et al.  Ultraviolet scene simulation for missile approach warning system testing , 1997, Defense, Security, and Sensing.

[5]  Claire Lavigne.  Étude théorique et expérimentale de la propagation du rayonnement UV dans la basse atmosphère , 2001 .

[6]  Brian E. O'Toole,et al.  Improvements to real-time ultraviolet scene simulation for sensor testing , 1998, Defense, Security, and Sensing.

[7]  M. Blumthaler,et al.  SOLAR UVB‐ALBEDO OF VARIOUS SURFACES , 1988, Photochemistry and photobiology.

[8]  Jeffrey H. Shapiro,et al.  Non-line-of-sight single-scatter propagation model , 1991 .

[9]  Malka Brith Lindner,et al.  Solar blind and bispectral imaging with ICCD, BCCD, and EBCCD cameras , 1998, Optics & Photonics.

[10]  P. Chazette,et al.  Experimental and theoretical studies of the aureole about a point source that is due to atmospheric scattering in the middle ultraviolet. , 2005, Applied optics.

[11]  A Roblin,et al.  Comparison of iterative and monte carlo methods for calculation of the Aureole about a point source in the earth's atmosphere. , 1999, Applied optics.

[12]  A. Bucholtz,et al.  Rayleigh-scattering calculations for the terrestrial atmosphere. , 1995, Applied optics.

[13]  Victor J. Norris.  Autonomous low-cost electro-optical system that prevents runway incursion by providing direct warnings to flight crews , 2003, SPIE Defense + Commercial Sensing.

[14]  Morley M. Blouke,et al.  Potential of CCDs for UV and X-ray plasma diagnostics , 1985 .

[15]  Victor J. Norris.  FAA evaluation of UV technology for runway incursion prevention and low-visibility landings , 2003, SPIE Defense + Commercial Sensing.

[16]  Brian M. Sadler,et al.  Analytical performance study of solar blind non-line-of-sight ultraviolet short-range communication links. , 2008, Optics letters.

[17]  Victor J. Norris,et al.  Autonomous UV-enhanced-vision system for landing on CAT I runways during CAT IIIa weather conditions , 2001, SPIE Defense + Commercial Sensing.

[18]  Robert S. Evans,et al.  Performance comparison of visual, infrared, and ultraviolet sensors for landing aircraft in fog , 1999, Defense, Security, and Sensing.

[19]  Claire Lavigne,et al.  Ultraviolet light propagation under low visibility atmospheric conditions and its application to aircraft landing aid. , 2006, Applied optics.

[20]  Victor J. Norris.  Autonomous UV-enhanced-vision system that prevents runway incursions at medium-size airports , 2001, SPIE Defense + Commercial Sensing.

[21]  Giuseppe Tondello,et al.  A fast readout and processing electronics for photon counting intensified charge-coupled device , 2000 .