Spectra-precision Survey Pro v3.80 Recon GPS User Manual Manual de usuario descargar pdf (Pagina 25)

RTK Data Collection

RTK data collection uses differential GPS corrections broadcast by a

base receiver to solve for coordinates at a rover receiver in real time.

This section describes how to use Survey Pro for RTK GPS data

collection. Topics include:

How to select a projection method

How to configure the base and rover hardware

How to set a base point in the Survey Pro software

How to collect control points and solve the horizontal and

vertical projections

How to collect data and stake out measurements

Setting Projection Mode

When you open a new job in Survey Pro, the

Projection Mode

is set to

Ground - TDS Localization

. This is the default mode to produce

ground coordinates in any arbitrary coordinate system, such as a

resurvey of an old job or a brand new job from a single start point.

Using

Ground - TDS Localization

, the user does not need to select a

datum or map projection. Survey Pro will automatically initialize a

default projection for ground level distances when you configure the

first RTK base station in the job.

If your job requires a specified map projection and datum from the

coordinate system database, then you should switch

Projection Mode

Mapping Plane

. In

Mapping Plane

mode the user selects a map

projection zone from the database or creates a custom zone and

datum transformation using Survey Pro.

In either horizontal projection mode, the user can choose one of two

methods for vertical projection:

Localization (+Geoid)

, or

Ellipsoid

Heights

. Use

Localization (+Geoid)

mode when you want the local

vertical coordinate to be orthometric elevations.

Use Ellipsoid Heights

to use the GPS measured height as the local vertical coordinate.

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