WSF_SLC_EFFECT

effect WSF_SLC_EFFECT

effect <effect-name> WSF_SLC_EFFECT
   electronic_warfare_effect Commands
   WSF_POWER_EFFECT Commands

   auxiliary_antenna_pattern <pattern-name>
   auxiliary_beam_tilt <angle-value>
   number_of_canceler_channels <integer-value>
   cancellation_lock_ratio <dbratio-value>
   main_jnr_thresholds <min-db-ratio-value> <max-db-ratio-value>
   auxiliary_jnr_thresholds <min-db-ratio-value> <max-db-ratio-value>
   cancellation_ratio <dbratio-value>
   saturation_ratio <dbratio-value>
   cancellation_ratios ... end_cancellation_ratios

   # Optional Inputs - uses main channel antenna and/or receiver parameters if not specified.
   Antenna Commands ...
   receiver
        ... receiver commands ...
   end_receiver
end_effect

This base effect type can be included in the electronic_protect or electronic_attack technique block as one of the many available effects for a given technique. The commands listed below are the base-type commands that can be specified in the effect block for this effect type.

Note

If receiver and/or Antenna Commands are entered this will override the default use of a matched main and auxiliary channel receiver and/or antenna, respectively. In cases where these commands are used parameters are not copied from the main channel receiver and/or antenna and all parameters of interest should be set by the user.

Commands

auxiliary_antenna_pattern <pattern-name>

Specifies the antenna pattern name to be used.

Note

This antenna pattern will become the only and default antenna pattern.

Note

This input will override (i.e., takes precedence over) the receiver antenna_pattern.

auxiliary_beam_tilt <angle-value>

Specifies the beam tilt of the auxiliary receiver. The default tilt angle is derived from the receiver this effect is attached to if this is not defined.

Default: beam_tilt of the receiver for which the effect is attached

number_of_canceler_channels <integer>

Specifies the number of canceler channels (i.e., canceling loops or cancelers).

cancellation_lock_ratio <dbratio-value>

Specifies the canceling threshold level at which the signal will be canceled. Signal canceling will occur if the (auxiliary receiver channel)/(main channel power) >= cancellation_lock_ratio.

Default: 0.0 dB

minimum_pulsewidth <time-value>

minimum_cancelled_pulsewidth <time-value>

Specifies the minimum pulsewidth from pulse type jamming the canceler is able to operate on.

Default: 0.0 seconds

canceller_settling_time <time-value>

loop_settling_time <time-value>

Specifies the canceler loop settling time. This time is currently only used to interact with the WSF_POL_MOD_EFFECT polarization_switching_rate to negate any degradation and or multiple channels canceled by this EA effect.

Note

If (1 / pol_mod_switch) < canceller_settling_time) then the number_slc_channels_saturated is set to 1 and the slc_degradation_factor is set to 1.0, since the canceler loop can lock on the polarization modulations effect.

Default: 0.0 seconds

main_jnr_thresholds <min-db-ratio-value> <max-db-ratio-value>

Specifies the main channel JNR threshold levels to use as the lower and upper levels, respectively, at which the SLC will operate with the input jamming signal.

Default: 0.0 dB

auxiliary_jnr_thresholds <min-db-ratio-value> <max-db-ratio-value>

Specifies the auxiliary channel JNR threshold levels to use as the lower and upper levels, respectively, at which the SLC will operate with the input jamming signal.

Default: 0.0 dB

cancellation_ratio <dbratio-value>

Specifies the steady state cancellation ratio applied to jamming signals when the number of jammers is less than or equal to the number_of_canceler_channels.

saturation_ratio <dbratio-value>

Specifies the steady state cancellation ratio applied to jamming signals when the number of jammers is greater than the number_of_canceler_channels.

Default: cancellation_ratio if entered by itself or 0.0 dB if a table is entered

cancellation_ratios … end_cancellation_ratios

This command allows the definition of cancellation ratios that are:

• nondependent

• jammer-to-noise-dependent

• number-canceled-jammers-dependent

• number-canceled-jammers- and jammer-to-noise-dependent

• jammer-canceled-dependent

• jammer-canceled- and jammer-to-noise-dependent as described below.

To define a table that is nondependent

cancellation_ratios
   cancellation_ratio
   saturation_ratio | saturation
end_cancellation_ratios

To define a table that is only jammer-to-noise-dependent

cancellation_ratios
   jammer_to_noise <db-ratio-value-1> <db-cancellation-ratio-1>
   jammer_to_noise <db-ratio-value-2> <db-cancellation-ratio-2>
   ...
   jammer_to_noise <db-ratio-n> <db-cancellation-ratio-3>
   saturation_ratio | saturation
end_cancellation_ratios

To define a table that is only number-jammers-canceled-dependent

cancellation_ratios
   number_canceled_jammers <integer-1>
     cancellation_ratio <db-ratio-value>
   number_canceled_jammers <integer-2>
      cancellation_ratio <db-ratio-value>
  ...
  number_canceled_jammers <integer-n>
     cancellation_ratio <db-ratio-value>
  saturation_ratio | saturation
end_cancellation_ratios

To define a table that is number-canceled-jammers- and jammer-to-noise-dependent

cancellation_ratios
   number_canceled_jammers <integer-1>
      jammer_to_noise <db-ratio-value-1> <db-cancellation-ratio-1>
      jammer_to_noise <db-ratio-value-2> <db-cancellation-ratio-2>
      ...
      jammer_to_noise <db-ratio-n> <db-cancellation-ratio-3>
   number_canceled_jammers <integer-2>
      jammer_to_noise <db-ratio-value-1> <db-cancellation-ratio-1>
      jammer_to_noise <db-ratio-value-2> <db-cancellation-ratio-2>
      ...
      jammer_to_noise <db-ratio-value-n> <db-cancellation-ratio-3>
  ...
  number_canceled_jammers <integer-n>
     ...
  saturation_ratio | saturation
end_cancellation_ratios

To define a table that is jammer-canceled-dependent

cancellation_ratios
   jammer_canceled <integer-1>
      cancellation_ratio <db-ratio-value>
   jammer_canceled <integer-1>
      cancellation_ratio <db-ratio-value>
   jammer_canceled <integer-value-n>
      ...
  saturation_ratio | saturation
end_cancellation_ratios

To define a table that is jammer-canceled- and jammer-to-noise-dependent

cancellation_ratios
   jammer_canceled <integer-1>
      jammer_to_noise <db-ratio-value-1> <db-cancellation-ratio-1>
      jammer_to_noise <db-ratio-value-2> <db-cancellation-ratio-2>
      ...
      jammer_to_noise <db-ratio-value-n> <db-cancellation-ratio-3>
   jammer_canceled <integer-1>
      jammer_to_noise <db-ratio-value-1> <db-cancellation-ratio-1>
      jammer_to_noise <db-ratio-value-2> <db-cancellation-ratio-2>
      ...
      jammer_to_noise <db-ratio-value-n> <db-cancellation-ratio-3>
   jammer_canceled <integer-n>
      ...
  saturation_ratio | saturation
end_cancellation_ratios

saturation <db-ratio>

This command allows the definition of saturation cancellation ratios that are nondependent or jammer-to-noise-dependent

To define a table that is only nondependent:

saturation
   saturation_ratio | cancellation_ratio <db-ratio>

To define a table that is only jammer-to-noise-dependent:

saturation
   jammer_to_noise <db-ratio-value-1> <db-cancellation-ratio-1>
   jammer_to_noise <db-ratio-value-2> <db-cancellation-ratio-2>
   ...
   jammer_to_noise <db-ratio-value-n> <db-cancellation-ratio-3>