Electronic Warfare Pocket Guide

633 Pages·2011·5.91 MB·English

by  Adamy

Electronic Warfare
Pocket Guide
DavidL.Adamy
Raleigh,NC
scitechpub.com
PublishedbySciTechPublishing,Inc.
911PaverstoneDrive,SuiteB
Raleigh,NC27615
[phone],fax[phone]
scitechpublishing.com
Copyright©2011bySciTechPublishing,Raleigh,NC.Allrightsreserved.
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Editor:DudleyR.Kay
ProductionManager:RobertLawless
Typesetting:MPSLimited,aMacmillanCompany
CoverDesign:BrentBeckley
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PrintedintheUnitedStatesofAmerica
10987654321
ISBN:9781891121616
Contents
EWDefinitions&Subareas 4
Frequency 5
Antennas 6
RadioPropagation 13
ReceiverSensitivity 20
CommunicationJamming 24
CommunicationsElectronicProtection 26
JammingLPICommunications 27
RadarCharacteristics 28
RadarJamming 29
RadarElectronicProtection 31
ExpendableCountermeasures 32
Decoys 33
Decibels(dB) 34
Graph&NomographInstructions 35
ListofSymbolsinFormulas 37
ListofAbbreviations 38
3
4 ElectronicWarfarePocketGuide
EWDefinitions
EWistheartandscienceofdenyinganenemythe
benefitsoftheelectromagneticspectrumwhilepre-
servingthemforfriendlyforces.
EWSubareas
ES ReceivinghostilesignalstosupportEA
EA Actionstointerferewithenemyradarorcomm
EP Featuresofradarsorcommunicationsystemsthat
reducetheeffectivenessofenemyEW
EW
ES EA EP
RWRs Comm Jamming Radar ECCM
ESM Systems Radar Jamming LPI Comm
Data Intercept IR Jamming
Comm ES EO Jamming
ARMs
HEWs
Chaff
Flares
ElectronicWarfarePocketGuide 5
Frequency
λ=c/F λ
λinmeters
c=3×108m/sec
FinHz C
IEEE Commercial EW
Bands Bands Bands
Frequency (MHz)10631000063kkkkkk ESHHFF MKKMXCKSuaW MGHKEFLJI ....00010133Wavelength (meter)
L D
1k UHF .3
600 UHF C
300 B 1
A
100 VHF VHF 3
60
30 10
10 HF HF 30
6
3 100
MF
1 300
6 ElectronicWarfarePocketGuide
Antennas
Polarizationloss
0 dB
RHC RHC Polarizationlossisin
∼25 dB additiontoantennagain
3 dB LHC Nolossformatched
0 dB polarization
V V
3 dB
Lossof3dBfromany
45 deg
25 dB linearpolarizationtoany
circularpolarization
H
Gainofnon-symetrical55%efficientParabolicDish
29,000
Gain(notindB)=
θ ×θ
1 2
Gainofnon-symetrical60%efficientHornAntenna
31,000
Gain(notindB)=
θ ×θ
1 2
θ1&θ2areorthogonal3dBbeamwidthsindegrees.
ElectronicWarfarePocketGuide 7
Peakgainvs.3dBbeamwidthfor55%eff.dish
70
y) 60
c
n
e
ci 50
Effi
% 40
5
5
B (for 30
n d 20
n i
Gai 10
0
.1 .2 .4 .6.81 2 4 6 810 20 40 60 100
3 dB Beamwidth In Degrees
Antennaefficiency
Thisisapproximatelythe%oftotalinput/output
powerto/fromanantennawhichistransmitted/received
withinthe3dBbeamwidth
10%frequencyrangedishcanhave55%
2−18GHzdishefficiencyis∼30%
8 ElectronicWarfarePocketGuide
AntennaType Pattern TypicalSpecifications
Dipole Polarization:Alignedwith
El elementorientation
Beamwidth:80◦×360◦
Gain:2dB
Az Bandwidth:10%
FrequencyRange:
zerothroughµw
Whip El Polarization:Vertical
Beamwidth:45◦×360◦
Gain:0dB
Az Bandwidth:10%
FrequencyRange:
HFthroughUHF
Loop El PBoelaamriwzaitdiothn::8H0o◦r×izo3n6t0a◦l
Gain:−2dB
Bandwidth:10%
Az
FrequencyRange:
HFthroughUHF
NMoordmeal El PBoelaamriwzaitdiothn::4H5o◦r×izo3n6t0a◦l
Helix Gain:0dB
Az Bandwidth:10%
FrequencyRange:
HFthroughUHF
ElectronicWarfarePocketGuide 9
AntennaType Pattern TypicalSpecifications
Axial Mode Helix Az & El Polarization:Circular
Beamwidth:50◦×50◦
Gain:10dB
Bandwidth:70%
FrequencyRange:
UHFthroughlowµw
Biconical El Polarization:Vertical
Beamwidth:20◦to
100◦×360◦
Az Gain:0to4dB
Bandwidth:4to1
FrequencyRange:
UHFthroughmmw
Lindenblad El Polarization:Circular
Beamwidth:80◦×360◦
Gain:−1dB
Az Bandwidth:2to1
FrequencyRange:
UHFthroughµw
Swastika El Polarization:Horizontal
Beamwidth:80◦×360◦
Gain:−1dB
Az Bandwidth:2to1
FrequencyRange:
UHFthroughµw
10 ElectronicWarfarePocketGuide
AntennaType Pattern TypicalSpecifications
Yagi El Polarization:Horizontal
Beamwidth:90◦×50◦
Gain:5to15dB
Bandwidth:5%
Az FrequencyRange:
VHFthroughUHF
Log Periodic El Polarization:
VerticalorHorizontal
Beamwidth:80◦×60◦
Gain:6to8dB
Az
Bandwidth:10to1
FrequencyRange:
HFthroughµw
Cavity El & Az Polarization:R&L
Backed Circular
Spiral Beamwidth:60◦×60◦
Gain:−15dB(minfreq)
+3dB(maxfreq)
Bandwidth:9to1
FrequencyRange:µw
Conical El & Az Polarization:Circular
Spiral Beamwidth:60◦×60◦
Gain:5to8dB
Bandwidth:4to1
FrequencyRange:
UHFthroughµw