Predictions inside and around Vehicles

Computations inside and around complex modelled objects

Motivation


Nowadays, the exchange of data inside vehicles between numerous sensors and several central processing units is done via wired communication channels. The increasing complexity of sensor systems and the large amount of cables needed are reasons to look for other transmission possibilities. One way is to replace wired transmissions by high frequency radio links. Then each sensor chip inside a vehicle transmits its data to an array of antennas located in the interior. An important point is the reliability of the radio links, especially with regard to sensors or systems which belong to security systems. So the main focus is to analyze the radio channel in terms of reliability.



Prediction Model and Results


Focus of the investigations is the radio channel in the interior of a vehicle. The radio link is mainly characterized by the channel impulse response (CIR). For the computation of the CIR and the wave propagation paths in the interior a ray optical propagation model, such as the Intelligent Ray Tracing (IRT), is necessary. A typical spatial CIR of a prediction inside a vehicle is shown in the figure on the right.

Spatial Channel Impulse Response (CIR) computed with a 3D Ray Tracing model


Usage of Vehicle Databases


3D models of vehicles have to be available to accomplish predictions described above. The tool WallMan is able to read and convert many popular 3D CAD file formats to the WinProp file format.

 

 

More information about vehicle databases can be found at the corresponding database page.


3D CAD model used for a prediction


 

Read more about the deterministic 3D Ray Tracing propagation model.

Get more information about the database manager WallMan.

Read more about vehicle databases.

 

 

 

 
Computation of propagation paths from tower to airplane.

 

 

 

 

 
Computation of propagation paths inside an engine compartment.

 

 

 

 

 
Brochure:
Short range radio links

 

Application: Wireless Sensor Networks

 

 

Wireless sensor networks will replace wired transmission links inside vehicles in the near future. Simulations are necessary to obtain information about the radio channel inside vehicles. Read more about the modelling of cars and other vehicles with WinProp.

 

Application: WirelessCabin Project

 

 

The WirelessCabin project is developing wireless access technologies for a aircraft cabins. Several access technologies in the cabin are envisaged for passengers: UMTS for personal telephony and packet data, Bluetooth and W-LAN for IP access. The Bluetooth interface will also be used for transport of UMTS services.
Detailed simulations in aircrafts are necessary to develop the new technology. Here you can find more information about aircraft models in WinProp.