08.06.2013 Views

Bernese GPS Software Version 5.0 - Bernese GNSS Software

Bernese GPS Software Version 5.0 - Bernese GNSS Software

Bernese GPS Software Version 5.0 - Bernese GNSS Software

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Latitude<br />

Longitude<br />

Height<br />

60 mm<br />

30 mm<br />

0 mm<br />

−30 mm<br />

−60 mm<br />

60 mm<br />

30 mm<br />

0 mm<br />

−30 mm<br />

−60 mm<br />

60 mm<br />

30 mm<br />

0 mm<br />

−30 mm<br />

−60 mm<br />

Station: NTUS<br />

10.4 Estimating Kinematic Coordinates<br />

1<strong>5.0</strong>0 15.25 15.50 15.75 16.00 16.25 16.50 16.75 17.00<br />

Hours of doy 087<br />

Figure 10.5: Kinematic processing results of the data from the IGS station NTUS in Singapore<br />

during the earthquake in the Indian Ocean on March 28, 2005 at<br />

16:09 UT.<br />

• constant coordinates from the “Station coordinates” file that has to be specified in panel<br />

“<strong>GPS</strong>EST 1.1: Input Files 1”,<br />

• positions for each epoch from a “Kinematic coordinates” file that may be selected in<br />

panel “<strong>GPS</strong>EST 1.2: Input Files 2” (see Section 10.4.4), or<br />

• positions for each epoch from a “Standard orbit” file for LEOs that may be selected in<br />

the Section “LEO INPUT FILES” of panel “<strong>GPS</strong>EST 1.2: Input Files 2”.<br />

For technical reasons it is necessary to include each kinematic station in the “Station coordinates”<br />

file that has to be specified in panel “<strong>GPS</strong>EST 1.1”, even if kinematic positions are<br />

provided as input. Coordinates in the file may be zero.<br />

Site displacements due to solid Earth tides as well as ocean tidal loading (as soon as loading<br />

coefficients are available) are considered for all types of stations, except for LEOs, irrespective<br />

whether they are static or kinematic. The advantage is that the position differences<br />

between roving and static receivers contain only differential effects.<br />

Two types of constraints may be defined in panel “<strong>GPS</strong>EST 6.5: Kinematic Coordinates” for<br />

the estimated corrections to kinematic coordinates. Constraints may either be specified<br />

independently for the horizontal and vertical components in the local system or a single<br />

value may be defined for all three geocentric coordinate components.<br />

If the a priori positions for the kinematic station are gathered from the kinematic coordinates<br />

file, coordinates are constrained only for those epochs that are labeled with flag K indicating<br />

a valid position estimate. The kinematic positions for the other epochs are computed but<br />

without constraints. Relative constraining between epochs is not supported.<br />

Kinematic coordinates can be estimated as any other parameter without any preelimination.<br />

In that case the number of parameters may become very large, however. There-<br />

<strong>Bernese</strong> <strong>GPS</strong> <strong>Software</strong> <strong>Version</strong> <strong>5.0</strong> Page 227<br />

Earthquake<br />

Earthquake<br />

Earthquake

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!