Tipton, KS | Trimble Man - 4/14/2020 17:27
Its a little more complicated than just the datums. .
FWIW
To which DATUM are StarFire corrections referenced?
The StarFire network transitioned from ITRF-2008 to ITRF-2014 on March 31, 2017 for StarFire GNSS and April 1, 2017 for StarFire GPS. Transformation parameters and methodologies are provided here. Furthermore, NavCom product interfaces no longer display the specific ITRF reference year as the network will continually update to more recent realizations as the years progress. Instead, the products will simply indicate either ‘ITR’ or ‘ITRF’ for the datum when in StarFire mode, with the understanding that the reference frame is the current date of the data sample. These changes are indicated in Sapphire firmware version 3.6.11 and StarUtil-3000 software version 1.2.38. The StarFire network was originally formed on the ITRF-2000 datum (WGS-84 G1150) and transitioned to ITRF-2008 (WGS-84 G1674) on January 21, 2014. Users may need to transition through ITRF-2005 to get from ITRF-2000 to ITRF-2008. To receive updated firmware/software, please contact your dealer or NavCom’s customer support center.
What is the relationship between StarFire positions (ITRF) and WGS84?
The latest realization of the WGS84 (G1762) Datum, as used by the GPS satellites, is based upon ITRF2014 at a different epoch from StarFire. The difference is sub-centimeter. It is important to understand that ITRF differs from WGS84, and one should never assume that they are equivalent in terms of truth reference.
https://www.navcomtech.com/en/support/faqs/ |
Convert Deere to Ag Leader Guidance Line (WGS84 to NAD83)
