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Jam Power at the RADAR Receiver
Input |
Equation:
JPr = ((PJ x GJ
x GR x
λ2 x BWR)
/ ((4 x pi)2 x R2J
x BWJ x L))
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JPr
= Jam Power at Receiver (Watt) |
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PJ
= Jammer Transmitted Power (Watt) |
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GJ
= Antenna Gain Jammer (Figure) |
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GR
= Antenna Gain Radar (Figure) |
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λ
= Wavelength (m) |
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BWR
= IF Bandwidth Radar (Hz) (IF = Intermediate Frequency) |
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RJ
= Range to Jammer (m) |
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BWJ
= Jamming Bandwidth |
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L
= Losses |
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Note:
BWR and BWJ
are matched no Losses! |
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Example: |
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PJ GJ
GR
λ2 BWR pi 230 km BWJ L |
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JPr
= (200 x 4 x 3162 x 0.0083266 x 1) / (158
x 5.2910 x 1 x 1) =
2.5-9
Watt or - 86 dBW
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