GPS satellite signals are received, and a C/A code is synchronized by utilizing the non-coherent DLL so as to remove the unique code of the GPS satellite. There are generated 1/2-bit lagging, 1/2-bit leading and normal satellite codes. Then a correlation between the former and a down-converted intermediate...http://www.google.com/patents/US6055265?utm_source=gb-gplus-sharePatent US6055265 - Apparatus for receiving GPS signals by utilizing non-coherent DLL
