Broadcasting with Satellites

Reaching everybody....

Application


Satellite systems provide efficient solutions in the domain of broadcasting, as basic coverage for large areas can be achieved with a limited number of transmitters. The planning of satellite broadcasting to mobile receivers requires tools to analyze the coverage in various environments, especially in built-up areas where the direct satellite signal is blocked (NLOS). The shadowing due to hills and buildings is a critical issue which can only be solved with accurate wave propagation models.

According to the environment different propagation scenarios and models of WinProp can be used for this application:

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Various orbital configurations are possible for the satellite system. The satellites can either be GEOs (geo-stationary), LEOs (low earth orbit constellations), or HEOs (highly elliptical orbit). According to the given interface ProMan's highly accurate satellite propagation models can handle all different types of satellites by the import of Almanac data or Two Line Element data (TLE sets).

Predicted Output

Wide areas are investigated based on clutter and topographical databases by using empirical models
of the LMS channe. Such models have been derived based on measurement campaigns. Flexible
interfaces allow the further calibration based on own measurement data.

Satellite coverage in urban areas can be simulated based on 3D vector data in order to assess
shadowing and attenuation effects (in street canyons, buildings). AWE's unique deterministic
wave propagation models based on ray-optical techniques allow very fast and accurate computations
of path loss as well as the wideband properties of the satellite radio link.


Very important for the planning of broadcasting networks are the following outputs:

  • Maximum Received Power (for coverage analysis)
  • LOS / NLOS analysis
  • Coverage analysis including fast fading margins
  • Channel impulse response incl. near and far echos
  • Inter-beam interference (if satellite has multiple beams)
Maps for all these values are generated in the broadcasting simulation mode.

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LOS prediction for
an urban city center

Required Input

Databases

The propagation models in WinProp can work with many different types of databases depending on the scenario which is analyzed:

Further information concerning the database can be found on the database page.

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Antennas

The antenna gain of the satellite can be specified to characterize the radiated signal (e.g. in terms of a satellite footprint).

 

Download a brochure of the Satellite Radio Network Planning tool
Read more about the Satellite Propagation Models 
Read more about terrestrial  broadcasting
Read more about the Network Planning Modules 






 
Digital Video Broadcasting
Satellite to Handheld



 

 




 
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