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Radio Mobile software is a copyright of Roger Coudé VE2DBE. Radio Mobile is dedicated to amateur radio and humanitarian use. Although commercial use is not prohibited, the author cannot be held responsible for its usage. The outputs resulting from the program are under the entire responsibility of the user, and the user should conform to restrictions from external data sources.
Radio Mobile Online is a radio wave propagation prediction tool dedicated
to amateur radio.
It uses digital terrain information and a mathematical model to simulate
radio transmissions between two fixed sites (radio link) or between a
fixed site and a mobile (Radio coverage).
The digital terrain information comprises three databases: ground
elevation, land cover, and population density. Those databases are
located on the server and represent a total of 200 GigaBytes.
The mathematical model predicts the radio transmission performance based
on the following entries:
- Transmitter
power
- Transmitter
line loss
- Transmitter
antenna gain
- Transmitter
antenna type (for coverage only)
- Transmitter
antenna azimuth (for coverage only)
- Transmitter
antenna tilt (for coverage only)
- Transmitter
antenna height
- Transmitter
latitude
- Transmitter
longitude
- Transmitter
ground elevation
- Elevation
data records between the transmitter and the receiver sites (up to
2000 records)
- Land
cover data records between the transmitter and the receiver sites
(up to 2000 records)
- Receiver
latitude (for link only)
- Receiver
longitude (for link only)
- Receiver
ground elevation (for link only)
- Receiver
antenna gain
- Receiver
antenna height
- Receiver
line loss
- Receiver
sensitivity (corresponds to the receiver threshold)
- Required
reliability (The percentage of time where the signal must be above
the threshold to consider a link to be liable).
- Color
for a successful reception (for coverage only)
- Strong
signal margin (for coverage only)
- Color
for a successful reception with a strong signal (for coverage only)
- Transparency
of the ground overlay (for coverage only)
The mathematical model is a mix of the ITM model, the two rays
method, and the land cover path loss estimation.
The ITM model is a US government publication, public domain. The two
rays method and landcover path loss estimation are based on my 40
years experience in radio propagation.
For a Radio Link study, the output of the mathematical model
predicts success if the fade margin of the received signal is
greater than zero.
For a Radio Coverage study, a colored plot over a topographical map
is produced.
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- Radio
Mobile software
For
On Line version and other information goto Author
(Roger Coude) page:
http://www.cplus.org/rmw/english1.html |
