k&k engineering
telecom planning, engineering and
training,
software development
software development
The element PRO
generates the profile charts for the individual hops. The charts show
the profile contour, the 1st Fresnel zone and the type of surface
crossed - forests, meadows, build-up areas, lakes, etc. The profile can
be drawn for freely selectable k factors.
The profile data can be inserted from a dialog window or loaded from the GTPOP30 topography database. PRO analyses the terrain
profiles: For given antenna heights both the clearance for the most
critical obstacle and the risk for ground reflections are investigated.
Alternatively, it calculates the antenna heights necessary for defined
clearances and k factors with respect to the most critical obstacle. If
both antenna heights are unknown, PRO proposes optimised antenna
heights.
Concerning
ground reflections, the type of surface - reflective or not reflective
- is considered. In case of harmful ground reflections, PRO calculates
the optimum antenna spacing to counteract the ground reflections, and
evaluates the antenna spacing’s efficiency with respect to the
variation of the k factor.
When analysing the profile, regard has been taken that the real slope of the terrain may differ from the slope obtained from maps or data banks.
The element PAC calculates the performance of individual radio hops and of complete links. (A link consists of one or more tandem connected hops over which the connections between the outgoing and the incoming terminal are routed. It is identical with the radio circuit. The link can also include cable lines.) The predicted performance and unavailability of the link are compared with the corresponding planning objectives. The objectives can be according to ITU-R or own ones.
The profile data can be inserted from a dialog window or loaded from the GTPOP30 topography database. PRO analyses the terrain
profiles: For given antenna heights both the clearance for the most
critical obstacle and the risk for ground reflections are investigated.
Alternatively, it calculates the antenna heights necessary for defined
clearances and k factors with respect to the most critical obstacle. If
both antenna heights are unknown, PRO proposes optimised antenna
heights.
Concerning
ground reflections, the type of surface - reflective or not reflective
- is considered. In case of harmful ground reflections, PRO calculates
the optimum antenna spacing to counteract the ground reflections, and
evaluates the antenna spacing’s efficiency with respect to the
variation of the k factor.When analysing the profile, regard has been taken that the real slope of the terrain may differ from the slope obtained from maps or data banks.
The element PAC calculates the performance of individual radio hops and of complete links. (A link consists of one or more tandem connected hops over which the connections between the outgoing and the incoming terminal are routed. It is identical with the radio circuit. The link can also include cable lines.) The predicted performance and unavailability of the link are compared with the corresponding planning objectives. The objectives can be according to ITU-R or own ones.