RNAV提供特定等级的精度，以及可重复的和可预测的航路定义，基本功能有：（ ）、飞行计划管理、制导和控制 、显示和系统控

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• Single GLS can serves all runway ends and in one airports.（
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• The GLS System eliminates need for “critical areas ” required fo
• Single GLS can serves all （ ）and in some cases multiple airp