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Chapter 3 SMART2 Operation
<OK
In this example, [COM2] is the port prompt.
If the command was accepted, the receiver responds with:
<OK
If a command is entered incorrectly, the receiver responds with:
<ERROR:Invalid Message ID
Ensure the computer does not sleep or hibernate during a logging session or data will be lost.
3.3 GLIDE
NovAtel's GLIDE is a positioning algorithm for single-frequency GPS and GPS/GLONASS applications. GLIDE
produces a smooth position output tuned for applications where time relative accuracy (pass-to-pass) is more
important than absolute accuracy. Because of this, it is well suited for agricultural applications.
Multipath signals tend to induce time varying biases and increase the measurement noise on the L1/L2 pseu-
dorange measurements. Carrier phase measurements are much less susceptible to the effects of multipath. The
GLIDE algorithm fuses the information from the L1 code and the L1 phase measurements into a Position Velo-
city Time (PVT) solution.
GLIDE includes settings for a dynamic mode, a static mode and an "auto" mode, where the filtering parameters
are automatically adjusted as vehicle velocity varies between stationary and dynamic states.
3.3.1 Dual-Frequency GLIDE
NovAtel's dual-frequency GLIDE technology adds to the superior pass-to-pass performance provided by single-
frequency GLIDE. Dual-frequency GLIDE is ideal for agricultural and machine guidance applications where rel-
ative positioning is critical. Using GLIDE significantly reduces the variation in position errors to less than 1 cm
from one epoch to the next. Dual-frequency GLIDE improves the absolute accuracy of the GLIDE position and
creates a robust solution resistant to the effects of high ionospheric activity. GLIDE works in all code positioning
modes, including single point, DGNSS and SBAS.
Refer to the NovAtel white paper on
dorange/Delta-Phase (PDP) and GLIDE Filters
tel.com/support/support-materials/application-notes.
3.3.2 PDP and GLIDE Configurations
Pseudorange/Delta-Phase (PDP) and GLIDE position filters can be used for single-frequency single point,
WAAS or DGNSS positioning. Refer to the PDPFILTER command and PDPMODE command .
To reset the PDP or GLIDE filter:
pdpfilter reset
To enable the PDP filter:
pdpfilter enable
Ensure the PDPFILTER command is used before the PDPMODE command. Set the PDP type and kinematic
type according to the application. For most kinematic applications:
pdpmode relative dynamic or pdpmode relative auto
SMART2 Installation and Operation Manual v4
(or a more detailed message)
GLIDE Technology
for more information on GLIDE and
along with other information available from
APN-038: Pseu-
nova-
26
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