# Mission Type

Find your area of interest using the search bar, typing in coordinates, or manually, then click the map to outline it. You can also upload a KMZ file for the area. 

There are two modes of selection depending on the mission type, which are detailed further below.

{% hint style="info" %}
Ensure you are viewing the maps feature from nadir when selecting your area of interest by clicking the "R" Reset View button.
{% endhint %}

{% hint style="warning" %}
Note that Flight Planner will set the mission type to Corridor Mode if uploading a polyline KMZ and will default to Mapping Mode if uploading a polygon KMZ.
{% endhint %}

## Mapping Mode

Mapping Mode allows you to select your area of interest in a polygon shape. Adjust the edges of the polygon by dragging the white vertices to the desired location. To delete vertices, hover over one and right click.

![Mapping Mode Area of Interest](/files/-MDRiqG8jwCTFEnMUBM9)

There are three options within Mapping Mode which are described and pictured below.

| Mapping Mode Options | Description                                                      |
| -------------------- | ---------------------------------------------------------------- |
| Single               | Parallel line pattern                                            |
| Perpendicular Line   | Parallel line pattern with an additional intersecting flightline |
| Double Grid          | Grid pattern in both directions                                  |

{% tabs %}
{% tab title="Single" %}
![Single Pass mode](/files/-MDRj3lsQWB3YVGDPh_i)

{% endtab %}

{% tab title="Perpendicular Line" %}
![Perpendicular Line Mode](/files/-MDRj7FV0cuUvEO6nnDm)
{% endtab %}

{% tab title="Double Grid" %}
![Double Grid Mode](/files/-MDRk45qzQvgZXGvA7r0)
{% endtab %}
{% endtabs %}

## Corridor Mode

Corridor mode allows you to plan a flight for a long and narrow area of interest such as a highway or railroad. It differs from the original Mapping Mode as you do not outline a polygon when using the planner. Instead, you select points along the corridor in a line and then adjust the corridor width accordingly to cover the desired area of interest.

![Corridor Mode Area of Interest](/files/-MDasEJ6bKfZ8sLRXkUe)

There are two options within Corridor Mode which are described and pictured below.

| Corridor Mode Options | Description          |
| --------------------- | -------------------- |
| Single-pass           | Single flightline    |
| Multi-pass            | Multiple flightlines |

{% tabs %}
{% tab title="Single-Pass" %}
![](/files/-MDatYm3nHxnmekSPDod)

{% endtab %}

{% tab title="Multi-pass" %}
![](/files/-MDatbha6yeEdLfNr6bk)
{% endtab %}
{% endtabs %}

## Flight Height Preference

There are two options  for your Flight Height Preference. If you are flying over an area that is flat, you can select **Fixed Altitude**. However, if you are flying over an area where the elevation is changing significantly, then you will want to select **Terrain Following** to ensure that the UAV is maintaining a constant AGL throughout the acquisition. 

**Line Segment Spacing** refers to the distance between each waypoint. For Terrain Following, this is also how often we are adjusting the elevation in the trajectory. If you are using Litchi and the M600, then there is a limit of 100 waypoints in the Flight Controller, so you will want to adjust accordingly for a large project. 


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