Wednesday, March 24, 2010

Pathloss 5.0 : Base Station Definition

Base station definition

Local and area studies and the point to mulitpoint link creation and design all require a base station definition. In the case of local studies and point to mulitpoint design, this base station definition is part of the design dialog. In the case of area studies, the base stations must be explicitly defined. Right click on the site legend and select -base station - create /edit.

Transmission direction

The define base station dialog shows the system gain in the direction receive at base station (inbound) and receive at mobile (outbound). The system gain is defined as the difference between transmit power and the receive sensitivity plus the sum of the antenna gains and minus the transmission line and antenna coupling unit losses. The worst transmission direction (lowest system gain) is usually selected for the analysis.

Antenna heights - transmission lines.

This dialog specifies the antenna heights and the transmission line lengths. Antenna heights are a mandatory entry.

The base station antennas height is always measured from ground level. The mobile antenna height can relative to ground level or to sea level. The sea level reference is intended for aircraft to ground station analysis.

(Not implemented yet)

Most likely server color

The most likely server color is used in area studies. The default color is the site legend color. Changing the most likely server color also changes the site legend color

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