Navstar Global Positioning System

摘要

1. USAF declared GPS Ⅲ SV01 available for launch in October 2017 and it was subsequently launched in December 2018 2. USAF awarded Lockheed Martin what will be an approximately $7.2 billion GPS ⅢF contract The Pentagon originally pushed back GPS Ⅲ launches to enable block buys and launch a competition 3. GPS Ⅲ SV02 launch pushed back to late August 2019.