Wide-Area RTK

Wide-Area RTK (WARTK)

Method and system for real time navigation using satellite transmitted three-carrier radio signals and ionospheric corrections 


The invention concerns a real-time navigation method for locating a rover using three-carrier radio signals of three different frequencies to determine the position of a user, transmitted by satellites. The method comprises a first step for determining "extra-wide lane" carrier phase ambiguity, a second step for estimating "wide-lane" phase ambiguity, and a third step for resolving the phase ambiguity of one of the frequencies. An additional step consists in the application of real-time ionospheric corrections during the third step, these ionospheric corrections being based on a continuously updated ionospheric model of said ionospheric layer calculated by a fixed ground reference station combined with geodetic data calculated by a so-called master fixed ground reference station. The invention also concerns a system for implementing the method. 


Associated Pattents References:  US2006164297 (A1)

Application number:
US20030539826 20031216 

Priority number(s):
FR20020016227 20021219 ; WO2003FR50176 20031216

Also published as:

US7256730 (B2)   FR2849209 (A1)   FR2849209 (B1)   RU2005118999 (A) 

RU2318222 (C2)  JP2006510893 (A)   JP4230458 (B2)   WO2004057364 (A2)   

WO2004057364 (A3)   EP1576387 (A2)  CN1726406 (A)   CN1726406 (B)   

BR0317446 (A)   AU2003302178 (A1)