이미 계획된 항로로 나는거라서
지형정보 있으면 Tercom 이런거 필요 없는거 아님?
GPS/INS랑 지형정보/항로 있으면 저고도 나는거 아녔냐?
The AGM-158B JASSM-ER is a stealthy cruise missile that
flies a preplanned route from launch to a target, using GPS
guidance and an internal navigation system.
• JASSM-ER:
- Has a 1,000-pound penetrating warhead
- Has an imaging infrared seeker that can be used
for greater accuracy and precision; the seeker uses
image templates prepared by a rear echelon intelligence
unit
GPS는 전파방해 위험성이 있고 INS는 오차가능성때문에 초점잡아줘여해서 필요함..