Redline Communications Inc. AN50S 用户手册

 

 

AN-50 System User Manual 

Redline Communications 

 

…..solving the first mile challenge. 

This section provides additional background material to section 7 of this manual, 
including a description of the Link Budget tool, Fresnel zone considerations, height 
calculations and radar horizon issues, interference issues with other systems, etc.  
 

 
Redline has developed a Link Budget Tool to help characterize the range performance 
of the AN-50 system for LOS, OLOS (optical line of sight) and NLOS conditions and 
various system parameters. The Link Budget Tool can be obtained by contacting your 
Redline certified partner or system integrator.  Note the tool provides a first-order 
approximation, and does not consider the details of any specific terrain profile which may 
impact performance; rather, a generalized terrain is used in the calculations, based on 
empirical formulas approved by governing bodies such as the IEEE and ITU.  Also, the 
tool does not consider system parameter variations arising from temperature 
fluctuations, cable loss tolerance, antenna alignment errors, etc.   
 
The Link Budget Tool estimates the distance over which the system can operate at a 
desired error rate while achieving robust communication. A link is considered robust if 
the average error rate is less than 1 bit out of every 1000 million, expressed as 10

-9

, for 

an availability of 99.99%. Availability is described in more detail below.   
 
The table below describes the net data rate (after coding overhead) that can be obtained 
for each modulation type in an ideal propagation situation. 
 

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