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In the last few years, radio technologies for unmanned aircraft vehicle (UAV) have advanced very rapidly. The increasing need to fly unmanned aircraft systems (UAS) in the national airspace system (NAS) to perform missions of vital importance to national security, defense, and science has pushed ahead the design and implementation of new radio platforms. However, a lot still has to be done to improve...
Regenerative ranging (RR) is a turn-around noise free method for measuring the distance of an interplanetary spacecraft from the Earth. Weighted (υ=2, υ=4) and balanced Tausworthe codes (T2B, T4B) are used as pseudo-noise (PN) ranging sequences. In this paper we show how to implement on Field Programmable Gate Arrays (FPGAs) a digital regenerative ranging transceiver that, on the spacecraft, receives...
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