A global landing system (GLS) for retrofitting an aircraft having ILS systems, as well as autopilot or flight control computers. The GLS using horizontal and vertical guidance control points (GCPs) which are co-extensive with glideslope and localizer antenna locations, and correction lever arms representing the separation of such GCPs with on-board GPS antennas. A method of measuring such lever arm with an additional GPS receiver is also included.

Um sistema global da aterragem (GLS) para o retrofitting um avião que tem sistemas do ILS, as.well.as computadores do piloto automático ou de controle do vôo. O GLS usando os pontos de controle horizontais e verticais da orientação (GCPs) que são co-extensive com posições da antena do glideslope e do localizer, e braços de alavanca da correção que representam a separação de tal GCPs com as antenas on-board do GPS. Um método de medir tal braço de alavanca com um receptor adicional do GPS é incluído também.

 
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