The FDC blocklibrary NAVLIB contains radio-navigation blocks for Simulink. Currently, there are two sublibraries, one for ILS signals and one for VOR signals. ILS stands for Instrument Landing System; VOR means 'Very high frequency Omnidirectional Range'. If desired, this library could be enhanced with other radio-navigation blocks, such as Global Positioning System. A detailed theoretical description about these simulation models can be found in the references at the end of this page.
The ILS sublibrary contains the following blocks:
The VOR sublibrary contains the following blocks:
Note: currently there are no accurate noise models available for the VOR blocks. Should such models become available, they can easily be included in the VOR sublibrary of NAVLIB.
Apart from the FDC user-manual, the following reference contains more information about the ILS signals: