A data detection circuit within a global positioning system (GPS) satellite receiver operates to detect and decode data sent in a spread spectrum signal. The data detection circuit receives input from a radio receiver, the information containing data from a plurality of satellites. The data is supplied...http://www.google.com.tw/patents/US6714158?utm_source=gb-gplus-share專利 US6714158 - Method and system for data detection in a global positioning system satellite receiver
