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HomeExploreTechnologyThe People Who Built GPS and Its PredecessorsJames Spilker

James Spilker

by gadget_bench
Person
James Spilker
Steve T Castillo / CC BY-SA 4.0 · resizedfile
Born
Letting satellites share a frequency Spilker helped design the ranging signal for civilian GPS receivers. Different codes let a receiver tell satellites apart even when they use the same frequency. His team also built an early receiver to process the signal, so this story is about what a listener could actually pick out of the broadcast.
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