# Hovermap ST-X and ST Lidar

|                             |                                             |
| --------------------------- | ------------------------------------------- |
| **Description**             | LiDAR with SLAM for GPS-denied environments |
| **Weight**                  | 1.6-1.7kg                                   |
| **NDAA Compliant**          | No                                          |
| **Offered By**              | Emesent                                     |
| **Latest Emesent Software** | Cortex v4.1.3 and Commander v2.2.1          |

The Emesent Hovermap ST-X and ST lidars are excellent payloads for creating detailed, accurate lidar point clouds, while enabling operations in challenging, GPS-denied environments.

<figure><img src="/files/x7aUJTbAarUgQ5GfgXzo" alt=""><figcaption><p>Astro + Hovermap ST-X flying inside Alcatraz Cell House</p></figcaption></figure>

### Compatibility

<table><thead><tr><th>Drone Compatibility</th><th>Emesent ST<select><option value="SHv8oMwmiIbF" label="Yes" color="blue"></option><option value="eGG9b32rkoLv" label="No" color="blue"></option><option value="uC8MMpP6mCOA" label="Coming Soon" color="blue"></option></select></th><th>Emesent ST-X<select><option value="ig7orSicsUPZ" label="Yes" color="blue"></option><option value="ZSmD19mOwe80" label="No" color="blue"></option><option value="RgPFbTdmduQn" label="Coming Soon" color="blue"></option></select></th></tr></thead><tbody><tr><td>Astro (F45)</td><td><span data-option="eGG9b32rkoLv">No</span></td><td><span data-option="ig7orSicsUPZ">Yes</span></td></tr><tr><td>Astro Max</td><td><span data-option="SHv8oMwmiIbF">Yes</span></td><td><span data-option="ig7orSicsUPZ">Yes</span></td></tr><tr><td>Alta X</td><td><span data-option="eGG9b32rkoLv">No</span></td><td><span data-option="ZSmD19mOwe80">No</span></td></tr><tr><td>Alta X Gen2</td><td><span data-option="uC8MMpP6mCOA">Coming Soon</span></td><td><span data-option="RgPFbTdmduQn">Coming Soon</span></td></tr></tbody></table>

### Setting up Hovermap

{% content-ref url="/pages/tPXdecEjwhsGOeHZ6oJf" %}
[Hovermap Setup on Astro](/ecosystem/payloads/third-party-payloads/hovermap-st-x-and-st-lidar/hovermap-setup-on-astro.md)
{% endcontent-ref %}

### Operation modes

Hovermap can interact with Astro as a passive payload, for mapping applications that can be flown with good GPS signal in open spaces with few obstacles.

{% content-ref url="/pages/KK5Y7d80GZYErxZ405yP" %}
[Mapping with Hovermap](/ecosystem/payloads/third-party-payloads/hovermap-st-x-and-st-lidar/mapping-with-hovermap.md)
{% endcontent-ref %}

Hovermap can also use the lidar data of the environment around Astro, and build a 3D model in real time. It can use that data for obstacle avoidance, and even allow Astro to autonomously explore GPS-denied areas like under bridges and inside tunnels and mines.

{% embed url="<https://drive.google.com/file/d/1E1IJqVptU_CEoJ5mKBL6M3PxekiDd3TQ/view?usp=drive_link>" %}
Bridge scan with Hovermap ST-X
{% endembed %}

{% embed url="<https://youtu.be/045shpvB-m4>" %}
Astro navigating using Hovermap Assisted Mode
{% endembed %}

{% content-ref url="/pages/UDEtgqlGW566wudPkzi6" %}
[Assisted/Autonomous Flight](/ecosystem/payloads/third-party-payloads/hovermap-st-x-and-st-lidar/assisted-autonomous-flight.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.freeflysystems.com/ecosystem/payloads/third-party-payloads/hovermap-st-x-and-st-lidar.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.