At the beginning of each day of field work, the base and rover should be prepared for surveying point coordinates. [NB: both receivers and mobile phones should be charged overnight before daily use.]
- Under normal KAP excavation and survey conditions, we use the threaded rod on the concrete survey marker at the SE edge of the upper terrace of the inner citadel at Kaymakçı as our primary datum. It was originally surveyed in 2007 from the 2007_base01 survey marker (60 points averaged, then called 2007_base02). Its elevation was then set to 214.00 based on the local 1:25,000 topographic map, renamed to 2014_base_01, and has been used as the primary datum for KAP excavations since 2014. Its coordinates are the following:
|UTM zone 35N
|Easting / Longitude
|Northing / Latitude
- Unpack the base and rover receivers carefully, press the power button on each until all lights glow white, and release the power button to let the receivers initiate.
- While the receivers initiate, gently but firmly attach the 15-cm extension rod to the threaded rod on the survey marker. It rotates along the threads only very little—DO NOT FORCE IT or you will strip the threads of the extension rod. Gently but firmly rotate it until it stops and check to make sure it is firmly in place.
- Remove the receiver antennas from the lids of their cases and—one by one—attach them to the receivers by carefully opening and holding back the blue rubber gasket labeled LoRa, or “Long-Range”, and screwing the antenna on to its threaded mount. MAKE SURE THE ANTENNA IS PROPERLY ALIGNED with the mount or you will strip the threads.
- Mount the base receiver on the 15-cm extension rod on the survey marker until it is firmly in place; mount the rover receiver on the telescoping survey pole until it is firmly in place, extend the survey pole fully, and mount the mobile phone in its cradle.
- Open the mobile phone and follow these steps…
a. Connect the phone Wi-Fi to the base hotspot network (reach-base:22:12; pswd: emlidreach).
b. Open the Emlid Flow app and select reach-base on the Receivers page.
c. Check the base information on the Receivers page, ensuring it matches the information shown in the image.
d. To tell the base receiver where it is, select Base settings from the Receivers page and check the information to ensure it matches the information in the image.
e. If the base information is missing or you need to change its location, select Configure in the Base settings page. In the Configure base page that opens, enter coordinates by the Manual method—entering the coordinates of the 2014_base_01 base (provided above)—OR by selecting Choose from project to find and select the 2014_base_01 point in an existing project.
f. Set the Antenna height to match the extension rod height (0.15 m). Note that the height of the internal sensor from the bottom of the threaded mount (0.134 m) is automatically added to the height of the extension rod, for a total antenna height of 0.284 m.
g. Select Status in the main Receivers page (above) to make sure the unit is receiving signals, to see how many satellites are in view, what they signal-to-noise ratio is, etc. This is an information page and requires no action.
h. If this is a first-time set-up, select Settings from the Receivers page (above) to check the GNSS and position streaming settings, among other things. In normal conditions, no action is required here.
i. If the unit is having trouble receiving GNSS signals, check the GNSS settings in the Settings page to ensure the information matches the information in the image.
j. If the unit is receiving GNSS signals and shows the red SINGLE solution in the upper right-hand corner, it is ready to act as a base station, providing signals to the rover receiver.
k. Return to the Wi-Fi settings on the phone, and connect the phone Wi-Fi to the rover hotspot network (reach-rover:5A:37; pswd: emlidreach).
l. Select reach-rover on the Receivers page (if it does not self-select), and check the information to make sure it matches the information in the image.
m. Select Status in the main Receivers page (above) to make sure the unit is receiving signals, to see how many satellites are in view, what they signal-to-noise ratio is, etc. This is an information page and requires no action.
n. Make sure you see the green arrow symbol and Receiving corrections in the Corrections panel at the bottom of the Status page. If the rover is receiving corrections, you are ready to survey!