The sublibrary ILS of the library NAVLIB contains two different masked subsystem blocks
which implement localizer noise signals: LOCnoise1 and
LOCnoise2. See the references below for
more details about the theoretical backgrounds.
Other blocks in the ILS sublibrary of NAVLIB are: Nominal ILS signals, GSerr, GSnoise, and
LOCerr, and the example system ILS example.
This block generates localizer noise according to AGARD R-632 (ref.[2]), assuming a constant approach speed. The user must specify the scale length Lloc (typically 130 m), the standard deviation sigma_loc (usually <= 15 micro-Ampere), and the approach speed V.
LOCnoise1 doesn't have any inputs.
Outputsignal: Localizer-noise [micro-Ampere]
This block uses a localizer noise filter according to NASA CR-2022 (ref.[3]). The user doesn't have to specify any parameters.
LOCnoise2 doesn't have any inputs.
Outputsignal: Localizer-noise [micro-Ampere]
Apart from the FDC user-manual, the following reference contains more information about the ILS signals: