Radar Target
Radar Target.
blockType: RadarTarget
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Path in the library: |
Description
The Radar Target block models a radar target that reflects a signal according to a given Effective Scattering Area (ESA) value. The block supports the non-fluctuating target model and all four Swerling target models. The unit does not support polarised signals.
Ports
Input
#
X
—
incident signal
complex vector-column N by 1 | complex matrix M by N
Details
Incident signal as complex vector-column on 1 or complex matrix on . The value of is the number of signals. Each signal corresponds to a different target. The value is the number of samples in each signal.
The size of the first dimension of the input matrix may be varied to mimic the varying length of the signal. The size variation may occur, for example, in the case of a pulse signal with a variable pulse repetition rate.
| Data types |
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| Complex numbers support |
Yes |
#
Update
—
EPR update indicator
0 | 1
Details
Indicator to update the EPR for oscillating targets as 0 or 1. When the indicator value is 0, the EPR is constant. When the indicator value is 1, the radar EPR is fluctuating.
Dependencies
To use this port, set the parameters Fluctuation model to any value other than the Nonfluctuating.
| Data types |
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| Complex numbers support |
No |
#
RCS
—
effective scattering area (EDA)
non-negative scalar | non-negative vector-line 1 on M
Details
Average EPR (in m2) as a non-negative scalar or non-negative vector-string 1 on , where is the number of targets. This parameter applies to oscillating and non-varying targets. If you specify incident signals, you can specify the effective target pattern as a scalar or as a vector 1 at . For a scalar, the same value will be applied to all signals.
Dependencies
To use this port, set the parameters Source of mean radar cross section to Input port.
| Data types |
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| Complex numbers support |
No |
Output
#
OUT
—
reflected signal
Complex vector-column | Complex matrix
Details
The reflected signal returned as a complex column vector or complex matrix.
| Data types |
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| Complex numbers support |
Yes |
Parameters
Main
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Source of mean radar cross section —
EPR source
Property | Input port
Details
Specify the source of the effective scattering area (EDA) value:
-
Property- The average EAF value is set in the parameters Mean radar cross section (m^2). -
Input port- The average EAF value is supplied to the RCS input port.
| Values |
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| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
No |
#
Mean radar cross section (m^2) —
mean EPR
Scalar / array of real numbers
Details
The average radar EPR value in m2 as a non-negative scalar.
Dependencies
To use this parameter, set the parameter Source of mean radar cross section to Property.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
Fluctuation model —
fluctuation model
Nonfluctuating | Swerling1 | Swerling2 | Swerling3 | Swerling4
Details
Specify the statistical model of the target.
Setting this parameter to a value other than Update allows you to set EPR parameters through the Update input port. `Nonfluctuating`allows you to set EPR parameters through the Update input port.
| Values |
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| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
No |
#
Propagation speed (m/s) —
signal propagation speed
Real number
Details
The propagation velocity of a signal in m/s as a real positive scalar.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
Operating frequency (Hz) —
signal carrier frequency
Real number
Details
The carrier frequency of the signal that is reflected from the target, given as a positive scalar. The unit of measurement is Hz.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |