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AgGPS 252 Receiver User Guide 9
Overview 2
2.5 GPS Positioning Methods
GPS positioning systems are used in different ways to provide different
levels of accuracy. Accuracy is measured in absolute terms (you know
exactly where you are in a fixed reference frame).
Yellow Solid Receiving CMR corrections but unable to calculate RTK position:
computing DGPS (if WAAS/EGNOS is unavailable) or autonomous
position
Yellow Slow No CMR corrections: computing DGPS or autonomous position
Yellow Fast Not receiving CMR corrections: not computing positions
Table 2.3 LED sequences with OmniSTAR HP positioning
LED color LED flash Status
Off Off No power
Green Solid Normal operation: computing converged OmniSTAR HP positions
Green Slow Receiving OmniSTAR HP corrections, but only able to compute
unconverged position
Green Fast Receiving OmniSTAR HP corrections, but an HP error occurred
Yellow Solid Receiving OmniSTAR HP corrections but unable to calculate a
position: computing DGPS or autonomous solution
Yellow Slow No OmniSTAR HP corrections: computing DGPS or autonomous
position
Yellow Fast Not tracking OmniSTAR HP corrections: no positions
Table 2.2 LED sequences with RTK positioning (continued)
LED color LED flash Status
Ag252_100B_UserGuide_ENG.book Page 9 Thursday, July 28, 2005 4:06 PM