The MUOS will replace the legacy UHF Follow-On (UFO) system before that system reaches its end of life to provide users with new capabilities and enhanced mobility, access, capacity, and quality of service.
MUOS将在传统超高频后继（英语：UHF Follow-On）（UFO）系统达到使用寿命前取代该系统，为用户提供新的功能和增强的移动性、接入、容量和服务质量。