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Radio propagation: Difference between revisions
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The radio stations parameters are also completely configurable by the user, by setting internal properties, via Nasal scripting or otherwise. | The radio stations parameters are also completely configurable by the user, by setting internal properties, via Nasal scripting or otherwise. | ||
For ATC comms, at the current state, some basic assumptions are made about transmitter power, receiver sensitivity and antenna heights: these are based on standard ATC interactions, but this will be changed in the future to support a wider variety of signals. It might even be possible to simulate realistic ACARS transmissions, as well as transponder responses with realistic range and signal quality (introduce errors based on signal quality etc.) | For ATC comms, at the current state, some basic assumptions are made about transmitter power, receiver sensitivity and antenna heights: these are based on standard ATC interactions, but this will be changed in the future to support a wider variety of signals. It might even be possible to simulate realistic ACARS transmissions, as well as transponder responses with realistic range and signal quality (introduce errors based on signal quality etc.) | ||
====Usage==== | |||
To enable the radio code, use the following command line flags: | |||
; <pre>--prop:/sim/radio/use-radio=true </pre> | |||
: enables the main radio code | |||
; <pre>--prop:/sim/radio/use-sqlite=true </pre> | |||
: enable the experimental [[Terrain_sampling | terrain sampler]] based on a terrain database. Not recommended unless you really know what you are doing. | |||
; <pre>--prop:/sim/radio/use-clutter-attenuation=true </pre> | |||
: enables the ground clutter attenuation calculations | |||
; <pre>--prop:/sim/radio/use-antenna-pattern=true </pre> | |||
: enables the antenna radiation patterns | |||
; <pre>--prop:/sim/radio/itm-radio-performance=false </pre> | |||
:disables performance mode (useful for propagation study) | |||
; <pre>--prop:/sim/radio/material-radio-database=true </pre> | |||
: use the Sqlite database for landcover types and radio properties. It is named material_radio_properties.sqlite and placed in $FGROOT | |||
; <pre>--prop:/sim/radio/sampling-distance=90 </pre> | |||
: distance between terrain profile points | |||
:Defaults to 90 meters which is the accuracy of SRTM elevation grids. A | |||
:smaller value coupled with disabling performance mode will have an impact | |||
:on the performance | |||