Each projects creates an ASCII file by default which stores the raw data of each point recorded in the programme (WGS84 latitude and longitude, number of satellites, horizontal and vertical precisions etc). This file has the same name as the project and the extension *.GPS and it includes 2 record types. Lines starting # contain information about the project:

 

- Projected CRS : Projected coordinate reference system.

- Geodetic Datum Shift: Transformation of geodetic datums.

- Vertical CRS : Vertical coordinate reference system.

- Vertical Datum Shift: Transformation of vertical datums.

- Local System.

- dX, dY, dZ : Additional displacements to the local system.

 

And lines starting ‘P’ or ‘B’ contain information about the points recorded:

 

-          Base (B) or Point (P).

-          Identifier of the option where the point was recorded.

 

 

 

-          System date.

-          System time.

-          Reference base name. If “-“ appears this is due to the fact that the base has been configured at another work session. When working via NTRIP the name of the node to which you have connected is added.

-          Point name.

-          WGS84 Latitude.

-          WGS84 Longitude.

-          WGS84 Altitude.

-          Antenna height. Does not include the Offset.

-          Pdop.

-          Number of satellites used.

-          Position type identifier.

-          Horizontal precision.

-          Vertical precision.

-          Point code.

-          File where the point has been stored.

-          Description of the position type (RTK Fixed, RTK Float, Autonomous etc).

 

This information proves useful in the event of wanting to apply a CRS to the data acquired or a local system different from the current one.

 

    

 

The data which appears by default under this option is part of the GPS file of the current project but a file can also be selected from another project. To this end the Select option must be chosen from the drop down menu.

 

Data can be exported in different formats: KML, HTML and W84.

 

A W84 file is an ASCII file with the following line format:

 

Name,GLat MLat SLat NS,GLon MLon SLon EW,Altitude,Code

 

Example: BR1,36 45 5.6754343 N,4 28 6.5456787 W,145.423,CT

 

For KML files you can choose between creating a point entity for each

or creating a polyline with all the points of the GPS file. Both for this type of files and for the W84 all the points can be exported or just those included in a specific file.

 

There is also the possibility of creating an HTML report combining different fields of the GPS file.

 

 

 

Another menu option, Move Coordinates, allows a range of points to be displaced based on the increments in latitude, longitude and altitude calculated between one of the file reference bases and the other entered manually. A W84 file will be created with the new points calculated.

 

 

The following steps must be taken:

 

-          Select Ref. Station  and mark a point on the list.

-          Select Initial Point  and mark another point on the list.

-          Select Final Point and mark a new point.

-          Enter the coordinates of the new base in latitude, longitude and ellipsoidal altitude WGS84.

-          Press Traslate to give a name to the W84 file and record the new points calculated.

 

Finally, an option is presented regardless of the GPS file which allows a projected coordinates' archive to be created in accordance with the current project configuration based on a file with NMEA GGA strings.