Sentence:  On returning to Stanmore in 1967 he [the author] was in charge of the development of transportable satellite earth stations Types III and IV for use in the British <WSD>Skynet</WSD> defence communications system. He was responsible for the proposal and all the technical concepts for the communications payload of the <WSD>Skynet</WSD> II satellite. 
Meaning of the word marked with <WSD> tags:  A family of United Kingdom military communications satellites.