Leica GPS 1200 Data Collection and Mapping 090925

7/29/2019 Leica GPS 1200 Data Collection and Mapping 090925

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Leica GPS 1200 Data Collect ion and Mapping 090925Part I - In the Field

Step 1 Assemble pole, sleeve, modem, and receiver

Slide black sleeve, bubble UP, onto one portion of pole. Place large GEB 221 battery into modem (push and slide to secure). Attach modem bracket to pole:

Screw handle (Top View)

Sleeve on pole

Place small GEB 211 battery in AT-1230 Antenna; secure the cover. Screw antenna onto top part of pole. NOTE: when tight, face the bank of lights toward you

for best Bluetooth wireless connection between antenna and receiver. Assemble top and bottom pieces of pole. Position the modem at waist level for ease of use. Remove 1200 from case; Leica logo up. Note position of unit in case (space for power

button):

Ensure that Compact Flash (CF) card is in 1200 (in battery compartment). Place smaller GEB 211 battery in 1200, secure the cover. With modems RED BUTTON inDOWN Position, press the back end of 1200 into the

modem, then click the front end into place. Pull UP on Red Button to lock 1200 in place.Wiggle the 1200 mildly to confirm that the 1200 is locked onto the modem.

Attach the flexible black 7-8 antenna to the side of the modem. If necessary, in lieu of Bluetooth wireless connection of antenna to 1200, attach the antenna

cable. Match up the red dots and / or carefully line up the guides on the plugs.

Step 2 - Turn antenna on, then turn 1200 on

Turn ANTENNA on first. Press and hold Pwrbutton until 3 lights go on (yellow-green color),then TRK will start to blink, indicating it is starting to track satellites once it has found allsatellites, TRK light will stay on. If antenna is using Bluetooth, it starts out as Green, but willturn Blue once paired with 1200. NOTE: If antenna has not been used recently, let it run forabout 15 minutes before proceeding while the satellite almanac is updated.

Turn 1200 on nextby pressing PROG. The Leica screen appears, showing the main menu.The CDMA will need some time to connect & initialize the screen will flash connected tointernet. The green light on the side of the CDMA modem glows, and the Bluetooth light onthe antenna should turn from green to blue as it pairs with the 1200. If Bluetooth light doesNOT turn blue, do the following:

o

Press F10. The current port should show as Smart Antenna (Bluetooth1).o If the port is not connected, press F3, then press Search. This should re-establishconnection with the antenna through Bluetooth.

The position error circle on the top of the 1200s screen is large, indicating that the level ofaccuracy is low (15-20 ft):

modem

Power button


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Step 3 - Set up a new job Select3 Management >1 Jobs >F2 - New

Name: (type in a name for your job I use the location or date; here, tback) Press Enter to move the cursor down to the next line

Description - leave blankCreator - leave blank

Press F6 - go to codelist page (NOTE:You may be prompted to STORE J ob)Codelist: NJ CU (previously loaded)

Press Enteror go to next pageNOTE: WWM needs to create instructions for making codelistsCoord system: selectNJ NAD83 GRS80 (this is SP but will also show lat-long)

Average (shows defaults for avg position and avg ht accuracy) Press F1 Store: settings are stored Press F1 CONT: to continue

Step 4 - Confirm settings, connect to RTK correction antenna w/ CDMA modem

Press 1 - Survey; settings are displayed as follows:Job: tback (named in Step 3)Coord Sys: NJ NAD83 GRS80 (set in Step 3)Codelist: NJ CUConfig set: CDMA NJ I2 (NOTE: the system automatically searches for closest RTK sta)

Antenna: ATX 1230 pole

Press F1 CONT to continue this takes you to the data collection screenPoint ID (default): 0001 (unless you are continuing an already existing project)

Antenna Ht:6.5617 ft (exactly equal to 2 meters)3DCQ (3D accuracy): large number (15-20 ft) reflects lack of RTK correction at present

Press Shift , then F3 CONEC (OPERATORMUST PRESS SHIFT)to Connect the CDMAmodem to the RTK network. A flashing arrow above an antenna signal and @ iconshows connectivity has been established: (((((

@

Once connected to the RTK network 3DCQ error should decrease to +/- 0.10 ft (see below):

Large error circle without RTK: Small error circle with RTK:

NOTE Inadequate accuracy: If you see no change in either 3DCQ value or error circle sizewithin several minutes of RTK connection, the modem may have locked up. Do the following:

o Press Shift-F3.o Power down the 1200o Remove CDMA from modem bracketo Re-connect CDMA (CAREFULLY line plug up properly when re-inserting into barrel)


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Step 5 - Data Collection and Storage

From the Survey page, press the Code tab with the stylus - this takes you to the Codepageits a good idea to stay on the code page while you are collecting data. The codescreen looks like:

Point ID: 0001Code as default; if there is an existing codelist, select the appropriate label)

3DCQ: 0.15 ft (accuracy)(NOTE: WWM needs to make directions for creating Comments)

When you are ready to take the point, center the bubble on the black sleeve on the pole, Press F1 - OCCUPY (F12 also can be used) be still until point has been storeddisplays. Move to your next point, center the bubble on the black sleeve, press F1, be still until point

has been stored. Repeat these steps until all of your data points have been collected.

If you encounter Data Collection Accuracy problems, see the following notes. If datacollection is accurate, proceed to Step 6.NOTE 1: If you are CLOSE to the desired accuracy but not quite there, a warning will appearstating that the accuracy is ___ above the setting, do you wish to store the point anyway? Ifyou are satisfied with the current accuracy, press Yes; if not, you can wait for improvement.

NOTE 2: If you are NOT CLOSE to the desired accuracy (say, 3 feet), the 1200 will not collectthe point, nor will it give you a warning. If you are in this situation, and find that your accuracydoes not improve after 3-4 minutes, you can re-initialize the CDMA modem connection with theRTK antenna by pressingShift - Initialize. (You may need to SHIFT F3 DISCO first). If thatdoes not improve accuracy, use the stylus to press @ and determine the last time that themodem talked to the RTK antenna. If the signal has been lost (e.g., the last time a signal wasreceived was 300 seconds ago), you need to disconnect and re-connect the modem to theInternet as follows: Press Shift - F3 for disconnect; the unit will say disconnected from the Internet. To reconnect, press Shift - F3. If successful, the unit will say connected to the Internet.NOTE 3: If all else fails, you may have to power down the unit, then physically unplug and re-plug the CDMA modem into the bracket (per directions at the end of Step 4). HOWEVER, if you

choose to perform this step, it is CRITICAL that you DISCONNECT (Press Shift-F3) from theInternetPRIOR to powering the 1200 down.

Step 6a Check / Export dataYou can quickly export your data to the CF card as a .txt file and check it if desired. To do this: Press 4 Convert >Export data from a job >Export ASCII

o Export to: CF Cardo Directory: Datao J ob: Select the job you just performedo Coord System: NJ NAD83 GRS80o Format File: GPS_PNEZC.FRT (Point, North,East,Z,Code)o File Name: yourjobname.txto Press F1 CONT to export job as a text file to the Data directory on the CF cardo

Press 6 Tools >5 - File Viewer>F1 - CONTo SelectData >F1 CONTo Select your file >F1 CONTo Points are displayed in PNEZC order as comma-delimited txt, which can be

transformed into a DBF and loaded into ArcMap directly, eliminating Part II!


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Step 7 Power Down Properly, In SequenceShut the 1200 off first, as follows: From the Survey screen, press Shift-F3 to disconnect modem - (disconnected - RTK data

link down appears) Press Shift-F6 - Quit. The 1200 screen returns to the Main Menu. Press and hold ESC to shut down the 1200Shut the ATX 1230 antenna second, as follows: Press and ho ld the Power button until it turns red, then release.

Step 8 Disassembly and Storage Disassemble the system in reverse order from assembly that was described in Step 1. Make sure batteries are removed from the following devices before storing them in the case:

o ATX 1230 Antenna: GEB 211 (small)o CDMA modem: GEB 221(large)o 1200: GEB 211(small)

Place these discharged batteries with CONTACTS UP in the case to indicate to yourself andothers that these batteries need to be recharged.

Once back in the lab, remove the batteries stored with the contacts up and recharge them.When the middle green light on the charger flashes, a battery is fully charged. Replace thebatteries in the case with CONTACTS DOWN, indicating that they are fully charged.

Part II - In the OfficeStep A Transfer GPS data from CF Card to Computer1. Create a LeicaGPS folder on your computer or in your folder for the semester on the geosrvserver; then create another folder titled gps1200_download.

2. CAREFULLY remove the CF card from the GPS 1200 and insert it into the CF card readerprovided with the Leica. Plug the CF card reader into a USB port on your computer. Thecomputer will recognize the CF card (and/or reader) as New Hardware.

3. Open My Computer, scroll to the new Removable Device (here, the E; drive), open it:

All of the Leica GPS1200 file folders on the CF card should be visible (above, right)


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4. Copy > Paste ALL of the file folders from the CF card into theLeicaGPS\gps1200_download folder you just created. Select the Safely remove hardwareicon at the lowerRH part of your computer screen; select the appropriate device. When yousee a safe to remove hardware sign, remove the CF card.

5. Replace the CF card in the GPS 1200 Before Proceeding!

Step B Create a New Project folder using Leica Geo Office (LGO)1. Open LGO. A main window appears. SelectFile >New Project to create a project folder inwhich you will store the data from this particular field area:

2. A New Project window appears (below, left), on the General tab. If necessary, use theBrowse button on the RH side of the Location window to scroll to your LeicaGPSfolder (below).

Type your project folder name (here, tback_1200) into the Project window. Note that the typingis carried into the Location window as well, automatically setting the directory path


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3. Select the Coordinates tab and confirm that the coordinate system is WGS 1984 (NOTE: thisstep will be unnecessary if you collected your data with the NJ NAD83 GRS80 setting on GPS1200 receiver). Press OK.

A new project window appears in LGO (below), with the title project tback_1200:

4. Confirm that your project folder has been created in the proper location by scrolling(OUTSIDE of LGO) to your LeicaGPS folder. The new tback_1200 folder should be visible inLeicaGPS:


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Step C Import raw GPS data into New Project folder1. From the LGO main window, select Import >Raw Data:

2. From the Import Raw Data window, browse to LeicaGPS > GPS1200_download:

3. Open the DBX folder by dbl-clicking on it (above); an empty window may appear initially(below). Set Files of Type to System 1200 raw data. SelectTBACK in the main window; it willthen appear in the File name window. Press Import


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4. In the Assign Data to project tback_1200 window, highlight tback_1200, pressAssign:

Press Close after the data has been assigned to the project.6. To confirm that data has been imported to the project folder, select File >Open Project,

highlight tback_1200, press Open:

6. Select the Points tab on the window that opens; your data points should be listed in order:


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Step D Check Project Properties1. From the main LGO window, select File >Project Properties

In the Project Properties window, select Coordinates tab; press OK if system is WGS 1984

Step E Export GPS data as an ESRI shapefile1. Outside of LGO, scroll to your tback_1200 folder and create a new folder named shapefile:


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2. From the LGO project window, selectExport >Shapefile:

A Save Shapefile window opens:

3. From the Save In window (above), browse to and select the tback_1200 \shapefile folder(below); press Settings:


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4. From the Shapefile export settings window, select Points:

5. In thePoints tab, make the following selections. Press OK.


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6. You are returned to theSave Shapefile window; press Save:

7. Confirm that a shapefile has been exported to your folder by scrolling totback_1200 \shapefile and checking the contents. 3 shapefile components are there:

Step F Import the shapefile into ArcMap to verify i ts quality1. Open ArcMap (new map). Rt-click Layers >Properties > Coord System, set the coordsystem to Geographic > North American Datum 1983. Select File >Add Data and add thenocodepoint shapefile from tback_1200 \ shapefile:


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The shapefile represents a geophysical baseline along which radar, resistivity, and seismic datawere collected in Fall, 2008. The positioning appears to be very accurate. Points were flaggedevery 3 m (10 feet). Expansion of the map scale shows the points to beexactly 3 m apart:

Congratulations! You have completed a full cycle of GPS1200 data collection and mapping.

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Leica GPS 1200 Data Collection and Mapping 090925