ICAO is considering the use of L-Band (960-1024 MHz) to employ the next generation aeronautical communication system. In order to assess the viability of proposed communication systems in this frequency band, the multi-path dispersion behavior of the aeronautical air-ground channel at L-Band must be characterized. While extensive research has been conducted for the land-mobile and the satellite channels at L-Band, very little research has been conducted for the aeronautical air-ground channel. This paper describes a methodology for characterizing the aeronautical air-ground channel at L-Band (960-1024 MHz). Included is a description of the MATLAB simulation used to estimate the propagation effects of the channel. Representative output data is presented and data reduction techniques are also described. The paper concludes with suggested channel models for the aeronautical air-ground channel in L-Band.
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