# Scan Terrain with a radar sensor

**URL:** <https://community.cesium.com/t/scan-terrain-with-a-radar-sensor/12578>\
**Category:** CesiumJS\
**Created:** [March 10, 2021, 9:00am UTC](https://community.cesium.com/t/scan-terrain-with-a-radar-sensor/12578 "2021-03-10T09:00:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Uygar\_Yengin](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/uygar_yengin/32/4286_2.png) [@Uygar\_Yengin](https://community.cesium.com/u/Uygar_Yengin)\
**Post date:** [March 10, 2021, 9:00am UTC](https://community.cesium.com/t/scan-terrain-with-a-radar-sensor/12578/1 "2021-03-10T09:00:51Z")

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Hi everyone, i am new at using Cesium. I am interested in measuring the distance from the terrain to aerial vehicle flying on it. For this purpose, i want to use a radar sensor attached to the vehicle. Is there any sensor i can use in Cesium simulation ?

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<div class="post-metadata">

**Author:** ![dzung](https://sea2.discourse-cdn.com/cesium/user_avatar/community.cesium.com/dzung/32/2996_2.png) [@dzung](https://community.cesium.com/u/dzung)\
**Post date:** [April 2, 2021, 7:39pm UTC](https://community.cesium.com/t/scan-terrain-with-a-radar-sensor/12578/2 "2021-04-02T19:39:10Z")

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Welcome to the Cesium Community!

If you’re simply trying to create geometry in the shape of a cone, you could use the built in geometry types. Here’s a code example with a cone:

[https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=CZML%20Cones%20and%20Cylinders.html](https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=CZML%20Cones%20and%20Cylinders.html)

And you can use the geometry to calculate its intersections with objects in the scene to resemble a sensor behavior.

You could also create fully custom geometry in Cesium using the primitive layer, but this is a little more involved. If you’re trying to do some visibility/coverage analysis, the commercial ion SDK analytics package has a lot of tools for this:

> **[Cesium ion SDK](https://cesium.com/platform/cesiumjs/ion-sdk/)**
>
> The Cesium ion SDK extends the open source CesiumJS visualization engine with tools like sensor geometries and visibility analytics. Measure distance and areas, perform line of sight, viewshed, and visibility analysis, and include ready-to-use UI...