Wrote the Betaflight GPS Tab Wiki

docs/wiki/configurator/gps-tab.md

@@ -4,8 +4,52 @@ sidebar_position: 12
 
 # GPS Tab
 
-:::note
-Sorry; this Wiki page has not yet been written.
-:::
+Set up your GPS settings here. GPS is used in Betaflight for GPS Rescue and showing GPS Coordinates in the OSD.
+
+![GPS tab](/img/betaflight_configurator_gps_tab.png)
+
+## GPS Configuration
+
+Here’s the revised table with the protocol options combined:
+
+| **Option**                   | **Description**                                                                                                                                                                                                                                        |
+| ---------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| **Protocol**                 | The GPS protocol to use.<li>**UBLOX** - The most common GPS protocol; most GPS modules use this protocol.</li><li>**NMEA** - Use this for GPS modules that don't support UBLOX.</li><li>**MSP** - Use this for GPS modules that use MSP protocol.</li> |
+| **Auto Config**              | Automatically configures the GPS settings; it is recommended to keep this enabled. Requires Betaflight 4.5 or newer for M10 GPS modules.                                                                                                               |
+| **Use Galileo**              | Enable this if you want to use Galileo satellites; for most users, this should be enabled.                                                                                                                                                             |
+| **Set Home Point Once**      | When enabled, only the first arm after the battery is connected will be used as the home point; if not enabled, every time the quad is armed, the home point will be updated.                                                                          |
+| **Ground Assistance Type**   | The type of ground assistance to use; this should be set depending on your region.                                                                                                                                                                     |
+| **Magnetometer Declination** | The declination of the magnetometer; only useful if you are using a GPS module with a magnetometer.                                                                                                                                                    |
+
+## GPS Info
+
+| **Option**                       | **Description**                                                                                                                   |
+| -------------------------------- | --------------------------------------------------------------------------------------------------------------------------------- |
+| **3D Fix**                       | Whether the GPS has a 3D fix; required for GPS Rescue and showing GPS coordinates in the OSD.                                     |
+| **Satellites**                   | The number of satellites the GPS is connected to.                                                                                 |
+| **Altitude**                     | The altitude the GPS is reporting.                                                                                                |
+| **Speed**                        | The speed the GPS is reporting.                                                                                                   |
+| **Heading IMU / GPS**            | The heading the GPS is reporting.                                                                                                 |
+| **Current Latitude / Longitude** | The current latitude and longitude the GPS is reporting.                                                                          |
+| **Dist to home**                 | The distance to the home point.                                                                                                   |
+| **Positional PDOP**              | The current [Dilution of Precision](<https://en.wikipedia.org/wiki/Dilution_of_precision_(navigation)>); a lower value is better. |
+
+## GPS Signal Strength
+
+In this section you can see the signal strength of the GPS satellites.
+
+| **Option**          | **Description**                                                  |
+| ------------------- | ---------------------------------------------------------------- |
+| **Gnss ID**         | The GNSS ID of the satellite.                                    |
+| **Sat ID**          | The Satellite ID of the satellite.                               |
+| **Signal Strength** | A visual representation of the signal strength of the satellite. |
+| **Status**          | Whether the satellite is used for the GPS fix.                   |
+| **Quality**         | The quality of the signal.                                       |
+
+## Current GPS location
+
+This section shows a map with the current GPS location of the craft.
+
+## Setting up GPS Rescue for Betaflight 4.5+
 
 For more information about GPS changes in 4.5, see the [Wiki document](/docs/wiki/guides/current/Failsafe).