DGPS利用在坐标已知点上测定GPS测量定位误差，用以提高在一定范围内其它GPS接收机测量定位精度的方法。（

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• Single GLS can serves all runway ends and in one airports.（
• The GBAS channel range is restricted to （ ） so that the chan
• The GLS System eliminates need for “critical areas ” required fo
• The GLS System eliminates need for “critical areas ” required fo
• Single GLS can serves all （ ）and in some cases multiple airp