Typically, each system has its disadvantages ,and by integrating GPS and IMU we can get the advantages from both systems to gain the improvement in navigation and guidance performance.

• 这两个导航系统对于无人飞行载具皆有其存在的必要性，同时各自拥有其优缺点，藉由整合这两个主要的导航系统可以达到互补之作用同时增进导航与导引系统之效能。