User manual TRIMBLE GPS PATHFINDER OFFICE 2.90 GETTINGE STARTED GUIDE REV A

[. . . ] GPS Pathfinder Office ® Getting Started Guide GPS Pathfinder Office ® Getting Started Guide Version 2. 90 Part Number 34231-29-ENG Revision A January 2002 Corporate Office Trimble Navigation Limited Mapping and GIS Division 645 North Mary Avenue Post Office Box 3642 Sunnyvale, CA 94088-3642 U. S. A. Phone: +1-408-481-8940, 1-800-545-7762 Fax: +1-408-481-7744 www. trimble. com Copyright and Trademarks The following limited warranties give you specific legal rights. You may have others, which vary from state/jurisdiction to state/jurisdiction. Software and Firmware Limited Warranty Trimble warrants that this Trimble software product (the "Software") shall substantially conform to Trimble's applicable published specifications for the Software for a period of ninety (90) days, starting from the date of delivery. [. . . ] This indicates that the data file is completely covered by the base files that have been found in the base files folder for the project. We will use these two base files to differentially correct the rover files. The Reference Position dialog appears: The reference position is the known location at which the base files were collected. Note ­ As these base files come from a Community Base Station, the displayed reference position is accurate and correct. However, if you collected your own base data, the reference position could be incorrect or absent. In this case, you must know the reference position and enter it in this dialog. An inaccurate reference position will result in errors in the corrected data. GPS Pathfinder Office Getting Started Guide 71 4 Tutorial 8. The first time this dialog appears, either the coordinate system appears as Lat/Long or the last coordinate system used appears. If necessary, click Change and change the coordinate system to match the coordinate system that is shown in the status bar of the GPS Pathfinder Office software (UTM, 10 North, NAD 1983 (Conus), EGM96 (Global), and then click OK to confirm the reference position. You are returned to the Differential Correction dialog: The data files and base files are now displayed in the Differential Correction dialog. This is the extension that the differentially corrected output files will have. For example, the corrected version of Tutdata1. ssf will be called Tutdata1. cor. In the Processing group, make sure the Smart Code and Carrier Phase Processing option is selected. This is the default setting and it is the most thorough type of processing. 72 GPS Pathfinder Office Getting Started Guide Tutorial 4 10. A series of progress bars indicates the status of the operation. GPS Pathfinder Office Getting Started Guide 73 4 Tutorial When the process is complete, the following message appears: 13. Click Close to remove the message without displaying the correction log. In real use, if not all of the positions were corrected, you can click More Details to display a log file to help you track down the source of the error. 74 GPS Pathfinder Office Getting Started Guide Tutorial 4 4. 6 Lesson 4: Viewing and Editing the Data You now need to visually check the data before you export it to a GIS or spatial database. This is to confirm that all the expected data is there, and to look for any unwanted positions. This lesson shows you how to: · · · · · · · · open the data files select a coordinate system display the Map window display the Time Line window load the background files configure the Map window view the attributes of a feature view the offset of a feature It takes approximately fifteen minutes to complete. GPS Pathfinder Office Getting Started Guide 75 4 4. 6. 1 Tutorial Opening the Data Files You must open the data files in the GPS Pathfinder Office software to view them. You can open as many files as you like together, but you can only edit files if they are opened individually. The following dialog appears: The three files that were just created by the Differential Correction utility are selected by default. Click Open to confirm the selection. 76 GPS Pathfinder Office Getting Started Guide Tutorial 4. 6. 2 4 Displaying the Map and Time Line Windows There are two methods available to display the data. The first is the Map window, where the file appears along with any background files. [. . . ] Use the Internet and other resources to find the actual coordinate system for each server/service/layer (for more information, see below) and ensure that the Web Map Server and GPS Pathfinder Office coordinate systems correspond. Use the Web Map wizard to change the coordinate systems until the Layers dialog displays sensible coordinates. The coordinates displayed for your selected layers in the Web Map wizard are either not shown or they are not sensible values. GPS Pathfinder Office Getting Started Guide 147 A Troubleshooting Web Map Server problems (Continued) Cause The coordinate system received from the Web Map Server is not the same as the coordinate system in GPS Pathfinder Office. If in doubt, try this as the corresponding GPS Pathfinder Office coordinate system. For OpenGIS, the Web Map Server coordinate system is described using the European Petroleum Survey Group (EPSG) standard EPSG codes. [. . . ]