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GNSS receivers come with standard firmware configurations and have additional field
upgradeable options available, as follows:
GL1DE®:
Smoothing algorithm for repeatable pass-to-pass accuracy. GL1DE offers superior
positioning stability and is provided, at no additional charge, on all NovAtel OEMV
cards and OEMV-based receivers.
GL1DE optimally combines L1 code and L1 phase data to produce a positioning solution
well-suited for applications such as agricultural guidance, where pass-to-pass repeatability
is critical. With GL1DE, positioning jumps are less than 1 cm from one epoch to
the next.
Highlights:
- Works with single point, SBAS, CDGPS and OmniStar VBS positioning modes.
- GL1DE delivers pass-to-pass accuracies of better than 50 cm in areas with
no SBAS or other wide area correction services.
- Includes an auto-detection mode to automatically switch between dynamic and static
modes.
Test Results Prove the Difference:
Testing shows GL1DE provides superior pass-to-pass performance for applications
where relative positioning is important. Figures 1 and 2 provide a comparison of
NovAtel's traditional least squares solution with the GL1DE solution.
The data for these plots was collected in a test scenario meant to closely replicate
the pass-to-pass motion of an agriculture application. A FlexPak-V1 receiver and
GPS-702-GGL antenna were mounted on a test vehicle traveling east to west at speeds
of 5-12 kph.
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