Use Trimble Access to perform a calibration using a least squares computation and calculate either a horizontal and vertical adjustment, or a Transverse Mercator projection and a 3‑parameter datum transformation, depending on what the coordinate system settings that have already been defined in tthe job. Each method results in the computation ...

How to perform a site calibration in Trimble Access

To configure the survey style for a site calibration. Tap and select Settings / Survey styles. Select the required survey style. Tap Site calibration. Select whether the calibration computation should fix or compute the horizontal scale factor and the horizontal rotation.

If you do not specify the coordinate system, the Trimble Access software calculates a Transverse Mercator projection and a three‑parameter datum transformation. You can use a combination of 1D, 2D, and 3D local grid coordinates.

2022年8月3日 · Trimble Access software continues to be the leading field software professional surveyors use around the world. The subject of site calibration would take volumes to cover comprehensively, so let’s focus on a common scenario: setting up your GNSS receiver as a base and performing a site calibration.

Select an observation type appropriate to a calibration point. The options for a calibration point are topo point or observed control point. If you set the observation type to Topo point, all settings are defined in the survey style for a topo point.

This course is a “Deep Dive” into Trimble’s Site Calibration Routine. Both COGO Settings and Calibration Settings are reviewed and explained. We will perform an actual Site Calibration on GNSS data I collected in the field (NO CANNED DATA).

2021年6月30日 · Performing site calibrations can be a critical skill when using GNSS RTK systems. When successfully performed, site calibrations allow the GNSS to measure and stakeout relative to local grid...

The project calibration process involves measuring several known control points in the local site coordinate system using a GNSS rover, allowing the software to create pairs of measured latitude, longitude, height, and known control points.

2022年6月27日 · How to use GNSS to do a site calibration in Trimble Access.