Line of Sight Map

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Note: Due to export restrictions, this feature is only available in the USA version

 

Background:

The Line of Sight Analysis function provides a wide array of functionality.  Once markers are placed in a terrain, the user can perform line of sight (LOS) analysis to determine what the user can see from that location.  Conversely, LOS will show what can see the observer.  It is a very useful and powerful tool for tactical situational awareness, microwave tower placement analysis, analyzing placement of street signs, and many other functions.  (For Graphics, see the Getting Started Line of Sight Example.)  Quick Terrain Modeler's LOS analysis can be broken down into four basic groups:

 

1.Omnidirectional Line of Sight Analysis:  This type of analysis establishes what parts of the terrain can be seen from a specific location and vice versa.  Quick Terrain Modeler will evaluate whether there is visibility to the terrain in all directions.

       

2.Directional Line of Sight Analysis (Sensor at or near ground level):  Directional viewshed analysis will simulate the visibility of s specific sensor or camera which exists at or near ground level.  This type of sensor's position and orientation can be defined by placing a marker in the terrain and establishing an orientation and field of view.  Some examples of this application may be surveillance camera simulation or the coverage of a directional antenna such as a microwave antenna.

 

3.Sensor Line of Sight Analysis (Sensor far above ground): This type of analysis defines the observer relative to a marker in the terrain, but the observer is generally far from the terrain.  Examples of this type of sensor may be an airborne camera, LiDAR sensor, or satellite.

 

4.Vector Line of Sight Analysis:  Vector LOS analysis establishes a vector to/from all markers (i.e., specific positions) in the terrain from any position on the surface of the model.  This type of analysis can also simulate a "motorcade" route along which LOS vectors and ground distances are calculated in real time as the observer progresses along the route.

 

Omnidirectional Line of Sight from the "Serpent Head" Marker:

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Directional Line of Sight from the "Serpent Head" Marker, Orientation Due South (180 Degrees), Horizontal and Vertical field of view = 45 degrees.

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Sensor Line of Sight Analysis.  Sensor is "placed" 10km from "Serpent Head" marker, facing south, 15 degree grazing angle, 2 degree horizontal and vertical field of view:

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(Left) Vector Line of Sight Analysis - Travel Route.  This analysis shows LOS exists (green vector) to three markers and does not exist (red vector) to one marker.  (Right) Vector Line of Sight Analysis - Random Point.  This analysis shows that, from a random point on the surface of the model, LOS exists (green vector) to three markers and does not exist (red vector) to one marker. 

 

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