Present and Future Global Navigation Satellite Systems (GNSS)
GEO2TECDI_GPS_2.pdf
GEO2TECDI_GPS_2.pdf
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Selective Availability (SA)<br />
60<br />
GPS Pseudo Range error (2 May 2000, 3:00-5:00 UTC)<br />
Range Error [meters]<br />
Range error (meters)<br />
40<br />
20<br />
0<br />
-20<br />
-40<br />
SA turned off May 2 nd 2000<br />
4:05 UTC<br />
-60<br />
3 3.2 3.4 3.6 3.8 4 4.2 4.4 4.6 4.8 5<br />
Time (Hours)<br />
20<br />
GEO2TECDI – Bangkok, May, 2009 – <strong>GNSS</strong> Lecture 2
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