| 摘要 |
<P>PROBLEM TO BE SOLVED: To determine floating ambiguity values in a short time. <P>SOLUTION: A local RTK system and a regional, wide-area, or global differential carrier-phase positioning system (WADGPS) are used in combination. Floating ambiguity values in the WADGPS system are initialized by using a known position of a user receiver being stationary or, if the user receiver is moving, using the RTK system. Thereafter, the refraction-corrected carrier-phase measurements obtained at the user GPS receiver are adjusted by including the corresponding initial floating ambiguity values, and the floating ambiguity values are treated as well known in subsequent processes to position the user receiver in the WADGPS system. <P>COPYRIGHT: (C)2012,JPO&INPIT |
