User manual TRIMBLE GPSCORRECT EXTENSION 3.14 GETTING STARTED REV A

[. . . ] GETTING STARTED GUIDE Trimble® GPScorrectTM extension GETTING STARTED GUIDE Trimble® GPScorrectTM extension Version 3. 14 Revision A October 2010 F Trimble Navigation Limited 10355 Westmoor Drive Suite #100 Westminster, CO 80021 USA www. trimble. com Legal Notices Copyright and Trademarks © 2002­2010, Trimble Navigation Limited. Portions of the software are copyright © 1995-2008 LizardTech, Inc. For STL support, the software uses the Moscow Center for SPARC Technology adaptation of the SGI Standard Template Library. Copyright © 1994 Hewlett-Packard Company, Copyright © 1996-97 Silicon Graphics Computer Systems, Inc. , Copyright © 1997 Moscow Center for SPARC Technology. [. . . ] Select the Corrected and Uncorrected option to output all positions, including positions that the Differential Correction wizard could not correct. ­ 5. Click OK. The GPS position data from the matching SSF file is used to improve the positions in the AXF file or Shapefiles that you selected. Note ­ The ShapeCorrect utility moves the positions in the AXF file or Shapefiles. If you have used ArcGIS or ArcView 3. x to create spatial index (. sbx and . sbn) files for a Shapefile, these files are no longer valid after merging the SSF data. Delete the spatial index files, or update them to reference the new positions. 70 Trimble GPScorrect Extension Getting Started Guide CHAPTER 4 Forms and Controls In this chapter: Common elements Skyplot section Satellite Information section Receiver section Real-time section Plan section UTC Time section Setup section About section 4 This chapter describes the user interface of the GPScorrect extension software, and provides reference information about its forms and controls. Trimble GPScorrect Extension Getting Started Guide 71 4 Forms and Controls Common elements This section describes the buttons and status bar that are common to all screens in the GPScorrect extension. Section List button To access the sections of GPScorrect extension, tap the Section list button and then select the required section from the drop-down list. Status bar The status bar appears at the top of all the GPScorrect screens. Use the ArcPad button in the Status bar to hide the GPScorrect user interface and return to ArcPad. The status bar is always visible, and the icons that are displayed reflect the current status of the system and provide basic information about the status of the GPS receiver. Table 4. 1 Icon Status bar: Icons Name Battery icon Description The left half of this icon indicates the charge level of the GPS receiver battery, if one is connected. If the connected receiver does not provide battery status information to the GPScorrect extension, the left half of the battery icon is empty. The right half indicates the charge level of the field computer battery. · When the battery of the GPS receiver or field computer is fully charged, the corresponding half of the battery icon appears green. The level of green drops as the corresponding battery charge level drops. · When the power level is low, the corresponding half of the battery is yellow. · When the power level is critical, the corresponding half of the icon is red and the icon flashes. If the GPS receiver is powered by the field computer (for example a GPS Pathfinder XC receiver) or is integrated with the field computer (for example a GeoExplorer series handheld), both halves of the battery icon show the same level and indicate the battery status of the field computer. Indicates that an optional external antenna is connected. External antenna icon 72 Trimble GPScorrect Extension Getting Started Guide Forms and Controls 4 Table 4. 1 Icon Status bar: Icons (continued) Name Satellite icon Description Shows whether the geometry of the satellites is good or poor, as configured in the GPS settings area (see GPS settings area, page 78). The satellite icon flashes when the geometry of the satellites (their PDOP or HDOP) is poor. The number beside the icon indicates how many satellites are being used to compute GPS positions. The type of estimated accuracy value shown depends on the parameters set in the Accuracy Settings form (see page 104). The estimated accuracy value may be the estimated accuracy in the field, or it may be the predicted accuracy after postprocessing. To show the predicted postprocessed accuracy, there must be a data file open and the software must be logging GPS positions. When logging H-Star or carrier data, the predicted postprocessed accuracy value applies to all the positions collected since you achieved lock on the required minimum number of satellites. For all other receivers, this value applies only to the current position. The predicted postprocessed accuracy has a 68% confidence level, which means that 68% of the time the postprocessed position will be within the predicted postprocessed accuracy value shown when the position was collected. [. . . ] If you let the receiver use satellites with a low SNR or elevation, this may decrease the accuracy of positions calculated by the receiver. You are operating in an area of high Move to an area with better GPS coverage and use multipath interference. In the GPS Settings form, set the Velocity Filter field to Auto to apply velocity filtering to positions as they are recorded. If at least one valid real-time correction source is selected in the Real-time Settings form, and the last Choice field is set to Wait for Real-time, then only real-time positions are filtered. No configured real-time source is available, so the Trimble GPScorrect extension is using uncorrected positions. [. . . ]