This paper will provide a simple and useful navigation ad-hoc system for obtaining location and time information of the relay (unpopular, vehicle, fixed repeater) by coding satellite navigation signals into CDMA and obtaining the routing information by receiving the signals coded by CDMA from the four different relay systems without synchronization of the relayed signals. Some simple feasibility study in radio signal and signal processing is presented.

Keywords: Ad-hoc navigation, GNSS signal, relay, synchronization-free, CDMA