Click the RTK button, and you'll see the coordinate system module in the middle of the page. Tap "Config" to go to the coordinate system settings screen.
Tap "PICK" to enter the preset coordinate system screen. This screen is divided into two sections: preset coordinate system and custom coordinate system.
Preset coordinate systems are preloaded in the software. You can directly select the one that fits your project.
You can also filter by entering the coordinate system name or by selecting a country. The app will automatically categorize and adapt to the appropriate coordinate system based on your choice.
The custom coordinate system allows users to edit, save, and select their own coordinate system parameters.