GPSsurveying

iphone surveying app
◎ There is no need for expensive GPS devices.
◎ Supports kml, sima, csv.
◎ Easy to use.
Created by engineers with 20 years of surveyor experience.

Function
・ Management for each surveying location (can be added or deleted by horizontal slide)
・ Switching maps (“i” button to switch between aerial photos and standard maps, and 3D map display with two fingers up and down when viewing aerial photos)
・ Data (kml, sima, csv) can be sent by e-mail with the "Export" button.
-Observe latitude, longitude, and elevation (x, y, z). (Coordinate system WGS84)
・ Area and total diagonal distance are displayed.
・ High accuracy data is extracted to improve accuracy.


Please permit the use of location information service at the first activation.
Please allow "Always access GPS."
You can also set in "Settings> Privacy> Location service" in the settings app.


Observation method
① Create a new site with the "+" button on the "List" screen.
② You can give any name you like to “title” on the “Edit Memo” screen.
③ Please stop your iphone at the observation point.
(4) High-precision data is extracted. The “Record” button cannot be pressed until observation is possible.
(5) When the color of the “Record” button turns dark blue, press the button.
Then return to ③ and repeat the procedure.

The recommended models are as follows.
iPhone XS / XS Max / XR / iPhone X / 8 Plus / 8/7/7 Plus
Corresponding signal: L1C / A
Hygiene positioning: GPS, GLONASS, Galileo
Supplementary system: Assisted-GPS (A-GPS)

About observation accuracy
The iphone has a maximum horizontal accuracy of 5m and a maximum vertical accuracy of 3m.
Compared to a pocket GPS device, it is no different, but please use it at your own risk.