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step. An individual signal measurement takes 0.012 seconds (where 1 second = 50 samples). If a
noisy signal environment is anticipated, then this parameter should be changed. As this parameter
is Modem Specific, a general value of between 100 to 200 is used for the RSL Signal Source.
6.5.7 Step Pattern - Coarse Peaking
Long name
Level
Type
Value Range
Documentation
Step Pattern Coarse Azimuth Velocity
4
Float
0.02 to 30.0
Azimuth velocity in degrees/sec for
coarse peaking.
Step Pattern Coarse Elevation Velocity
4
Float
0.02 to 30.0
Elevation velocity in degrees/sec for
coarse peaking.
Step Pattern Coarse Peaking Azimuth
Step
4
Float
0.0 to 60.0
Width in degrees to scan during a
fine step pattern peaking function.
Step Pattern Coarse Peaking Elevation
Step
4
Float
0.0 to 60.0
Height in degrees to scan during a
fine step pattern peaking function.
The
Step Pattern Coarse Velocity
parameters specify the speed at which the antenna will move
during each step. Higher speeds tend to make the process run quicker, at the expense of position
accuracy. Setting the value too high may actually slow the process down as the AAQ is forced to
correct for frequent over-shoot of the target position.
6.5.8 Step Pattern - Fine Peaking
Long name
Level
Type
Value Range
Documentation
Step Pattern Fine Peaking Azimuth
Step
4
Float
0.0 to 60.0
Width in degrees to scan during a fine step pattern
peaking function.
Step Pattern Fine Peaking Elevation
Step
4
Float
0.0 to 60.0
Height in degrees to scan during a fine step
pattern peaking function.
Step Pattern Fine Azimuth Velocity
4
Float
0.02 to 30.0
Azimuth velocity in degrees/sec for fine peaking.
Step Pattern Fine Elevation Velocity
4
Float
0.02 to 30.0
Elevation velocity in degrees/sec for fine peaking.
Fine Step Peaking is the standard method used by the AAQ for Fine Peaking on the received
satellite signal.
Step Pattern Fine Peaking Step
parameters dictate the size of the steps made along each axis during
Fine Step Peaking. This parameter should be set consistent with the user’s tolerance for beam
pointing error. Smaller step sizes generally lead to smaller final pointing errors at the expense of a
longer overall peaking time. There is a limit to how small a step size should be used. This is based on
the position control accuracy of the antenna system and is feed / aperture specific.
The
Step Pattern Fine Velocity
parameters specify the speed at which the antenna will move during
each step. Higher speeds tend to make the process run quicker, at the expense of position accuracy
