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Third, the challenges and countermeasures of unmanned technology applied to coastal defense islands and border defenseUnmanned technology: coastal defense, islands and frontier defense's new help to defend the motherland.

2. Security and confidentiality issues1. UAV: the eye of the air in coastal defense and frontier defense.

1. UAV: the eye of the air in coastal defense and frontier defense.2. Task execution in dangerous environment2. Unmanned driving: an intelligent helper for land and sea transportation