The method of determining the position of a radio-frequency signal receiver consists first of all in dividing the Earth's surface into N geographical regions as a function of the N channels available in the correlation stage of the receiver. At least one satellite in projection onto the Earth's surface...http://www.google.de/patents/US7079076?utm_source=gb-gplus-sharePatent US7079076 - Method of determining the position of a radio-frequency signal receiver without knowledge of the initial approximate position, and receiver for implementing the same
