> For the complete documentation index, see [llms.txt](https://aerogcs-green-docs.aeromegh.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aerogcs-green-docs.aeromegh.com/10.-map-calibration/10.5-performing-map-calibration.md).

# 10.5 Performing Map Calibration

#### 1. Start Calibration

Once **Start Calibration** is tapped, the map switches to calibration mode:

* A **circular** **calibration marker** appears fixed at the center of the screen.
* The message *“Kindly adjust to expected location”* is displayed.

<figure><img src="/files/DbcxkKpRnz7d1mkftP8R" alt=""><figcaption><p>Fixed calibration marker displayed with “Kindly adjust to expected location” message</p></figcaption></figure>

#### 2. Adjust Map Position

* Move the **map** (not the marker) so that the marker aligns exactly over the drone’s true field position.
* Use **zoom gestures** to increase precision.
* Reference **visible** **landmarks** such as roads, trees, or boundaries visible both on the map and in the field.

<figure><img src="/files/TNrgyo3SYBK2CyYAL1lW" alt=""><figcaption><p>User moving the map to position the fixed marker over the drone’s actual location.</p></figcaption></figure>

#### 3. Save Calibration

* Once aligned, tap **Done** at the bottom of the screen.
* The application calculates and applies an **offset** to synchronize the map coordinates with the real-world position.

<figure><img src="/files/NJWDI1K0CsHzCqDSVNV6" alt=""><figcaption><p>Map view after calibration showing aligned position</p></figcaption></figure>