Engineering topics
Publications and source records attributed to Kyriacou, Charles.
Report proposes three advanced architectures for transponders used in deep space. Offer greater reliability, faster acquisition of and better performance in tracking weak signals, and better telemetry performance on downlinks.
Three architectures for advanced deep space transponders are proposed. The architectures possess various digital techniques such as fast Fourier transform (FFT), digital phase-locked loop (PLL), and digital sideband aided carrier detection with analog or digital turn-around ranging. Preliminary results on the design and conceptual implementation are presented. Modifications to the command detector unit (CDU) are also presented.