SX BLUE GPS iSXblue II+ GNSSTM, User Manual

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SXblue Series User Manual 44
point at different time of the day to confirm the reliability of the position. In
urban canyon environments (tall buildings nearby), performance will
depend on the number of satellites in view and the effects of multi-path, if
any. Watching (or setting masks in your software for) the differential status
of the receiver (Fixed, Float, DGPS, GPS) and the RMS value are of great
importance when the highest possible level of accuracy is required from the
SXblue receiver. If using RTK corrections (RTCM 3.x for example) in a
forested environment, and not requiring the highest accuracy, the receiver
will perform better if it is prevented from trying to go into fixed integer (RTK)
mode. See the $JRTK,12 command in the Technical Reference Manual for
more information.
•
To avoid errors in the software-displayed elevations, it is important to add
the phase center information provided in section 1.4.3 of this manual to the
overall measured height of the range pole (and antenna mounting plate if
using one of the Precision Antenna).
1.4.5.4 What to Know About Atlas Services (SXblue Platinum
only)
•
Atlas Services overview and operations are covered in the following two
chapters, but some important facts are presented in this section. Atlas
offers three (3) levels of satellite differential correction Scalable
services
that require a subscription with the company:
o
Atlas Basic: 50 cm 95% (30 cm RMS)
o
H30: 30 cm 95% (15 cm RMS)
o
H10: 8 cm 95% (4 cm RMS)
•
Atlas is a multi-frequency, multi constellation Global Correction Services
for GNSS . Atlas support is being introduced across a wide range of multi-
frequency, RTK-capable hardware, available worldwide.
•
Atlas is delivering its correction signals via L-Band satellites or IP address
at accuracies ranging from meter to sub-decimeter levels. With
approximately 200 reference stations worldwide and L-Band satellites
distributing coverage from 75°N to 75°S, all of the earth’s landmass is
covered.
•
Positioning Sustainability: Cutting-edge position quality maintenance in the
absence of correction signals.
•
Convergence Time: Industry-leading convergence times of 10 – 40 minutes.