Radar Target
The target of the radar.
blockType: RadarTarget
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Path in the library: |
Description
Block Radar Target simulates a radar target that reflects a signal according to a set value of the effective scattering area (ESR). The block supports the non-fluctuating target model and all four Swerling target models. The unit does not support polarized signals.
Ports
Input
#
X
—
incident signal
complex column vector N by 1 | complex matrix M by N
Details
Incident signal in the form of a complex vector column on a 1 or complex matrix on . Meaning is the number of signals. Each signal corresponds to a different target. Meaning is the number of samples in each signal.
The size of the first dimension of the input matrix can be varied to simulate a changing signal length. A change in size 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
An indicator for updating the EPR for fluctuating targets in the form of 0 or 1'. When the indicator value is `0, the EPR is constant. If the indicator value is `1', then the radar’s eEPR is fluctuating.
Dependencies
To use this port, set the parameter Fluctuation model any value other than Nonfluctuating.
| Data types |
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| Complex numbers support |
No |
#
RCS
—
effective scattering area (ESR)
non-negative scalar | non-negative vector-row 1 on M
Details
The average EPR value (in m2) in the form of a non-negative scalar or a non-negative vector is row 1 on , where — the number of goals. This parameter applies to fluctuating and non-changing targets. If you ask If there are no incoming signals, then you can set the effective radiation pattern as a scalar or as a vector of 1 on . For a scalar, the same value will be applied to all signals.
Dependencies
To use this port, set the parameter Source of mean radar cross section meaning Input port.
| Data types |
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| Complex numbers support |
No |
Output
#
OUT
—
reflected signal
complex column vector | 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 —
source EPR
Property | Input port
Details
Specify the source of the effective scattering area (ESR) value:
-
Property— the average ESR value is set in the parameter Mean radar cross section (m^2). -
Input port— The average EPR value is sent to the input port RCS.
| 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) —
average EPR value
Scalar / array of real numbers
Details
The average value of the radar EPR in m^2 ^ in the form of a non-negative scalar.
Dependencies
To use this parameter, set for the parameter Source of mean radar cross section value Property.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
Fluctuation model —
the fluctuation model
Nonfluctuating | Swerling1 | Swerling2 | Swerling3 | Swerling4
Details
Specify the statistical model of the goal.
Setting this parameter to a value other than Nonfluctuating, allows you to set EPR parameters via 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 the signal in m/s in the form of a real positive scalar.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
Operating frequency (Hz) —
carrier frequency of the signal
Real number
Details
The carrier frequency of the signal that is reflected from the target, specified as a positive scalar. Units of measurement — Hz.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |