慣かん性せい航こう法ほう

noun

inertial navigation system

Technical term used in aerospace, maritime, and defense contexts for navigation that relies on internal sensors rather than external references.

• 潜せん水すい艦かんは慣かん性せい航こう法ほうを使つかって位い置ちを把は握あくする。

  Submarines use inertial navigation systems to determine their position.