ECCM

1
?????? ??? ????? ?????????ECCM
?????????? ?? ?????? ???? ???? ??????
??"? ????? ?????

• ??????
• ????? ??????
• ????????? ?????

2
????? ????? ????????? ????

• ????? ??? ?????? ????? ?????????
• ??? ?????? ???????? ??? ????? ???.
• ??? ???? ?? ????? ?????

• RF
• IR

3
????? ????? ????????? ????

• ????? ????????? ?????? ???? ???????

• ???? ?? ?????? ??????
• ???? ????????

??? ????? ????? ????? ???????? ???? ????? ?????
????.
4
????? ????? ????????? ????

• ????? ????? ???? ?????? ?????
• ??? ??? ?????? ????? ???? ?? ?????? ????????
  ????
• ??? ?????? ?????? ????? ????? ???? ??? ???????
  ??????, ??? ????? ?????? ?? ???"? ?????? ???????
  ???? ???? ???? ?????

5
????? ????? ????????? ????

• ??????? ?????? ?????
• ????? ??????? ???????? ???? ??"? ?????
• ???? ????? ??? ?? ?????? ????? ?????? ???????
• ????? ?????? ?????? ?? ???? ????? ?? ??? ????,
  ????? ????? ? - blip ???"? (???? ?????)
• ????? ?????? ?????? ??????? ?? ???? ??? ??"? ????
  ???? ????? ??????

6
????? ????? ??? ????? ?????????

• Interception ????? ????? ?????? ("?????")
  
• Data Extraction ????? ?????? ????? ???????
  
• Jamming ????? ????? ???????
  
• Deception
  ?????

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???? ???????? ????????

• Wide Band White Noise Jammer
• Partial Band White Noise Jammer

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???? ???????? ????????
c. CW Jammer
d. Multitone Jammer
????? ?? ??' ?????? ?????? ??????? ???? ????
?????? ???? ?????
9
???? ???????? ????????

• Pulse Jammer

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????? ????? ??? ????? ?????????

• ????? ?????? ??? ????? ????????? ???
• ?????? ?? ????? ????? (???? Jammer) ??
• ??? ???? ??????? ????????.

11
????? ????? ??? ????? ?????????

• ???? ???"??? ????? ???? ?????? ??
• ??"? ????? (search radar)
• ??"? ????? (tracking radar)
• ?????? ?????? ???????

12
????? ??"? ??? ????????
??????? ???????? ??? ECM

• ????? ??????? ?? ???"? ??? ???? SNR ?? ?????
  ????? ?? ,??? ???? ?? ??????? ?????

• MTI
• STC
• FTC
• Random PRF
• Pulse compression
• Frequency Agility

• ??????? ???????? ?????? ??????? ??? ???? ?- ECM

13
????? ??"? ??? ????????

• ????? MTI (moving target indicator)
• ???? ?????? ??? ???? ?- clutters ??? ??????
  ??????, ?? ????
• ???' ?? ????? ?"? ???? ?- ECM, ?? ??? ????? ????
  ?????? ??? ECM ???? chaff (???)
• ???? ??????? ?????? ???? ?? ??? ??? ?????? ???
  ????? ????? ????? ?"? MTI

14
????? ??"? ??? ????????

• STC (Sensitivity Time Control)
• ????? ?????? ???? ??????? ????? ???? ???????
  ????.

15
????? ??"? ??? ????????

• STC (Sensitivity Time Control)
• ???? ???? ????? ???? ???? ?-
• ?????? ?????? ?????? ?? clutters ??????? ?????
  ?????? ?????? ?? ???? ???"? ??????
• ????? ?????? ????? ????? ??? ????? STC ????? ????

16
????? ??"? ??? ????????

• ????? FTC (Fast Time Constant)
• ????? ???? ??? ???? ????? ?????? ????? ???? ?????
• ?? ???? ??? ????? ?????? ?? ?????

17
????? ??"? ??? ????????

• Staggered / Random PRF (Pulse Repetition
  Frequency)
• ???"??? ??????? ???? ????? ?????? ??? ????

???"??? ???????? ????, ???? PRF ?????
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????? ??"? ??? ????????

• Staggered / Random PRF (Pulse Repetition
  Frequency)
• ????? ECM ??????? ?????? ????? PRF ????? ???? ? 2
  3 ??????? ??????? ????? ???
• ??? ???? PRF ?????

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????? ??"? ??? ????????

• PRF ?????

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????? ??"? ??? ????????

• ECCM capabilities of Pulse Compression
• ???? ????? ?? ????? ?????? ?"? ???"?
• ????? ?????? ?? ????? ?????? ?????? ????
• ?? ??? ?????? ???? ???? ?? ???"?, ??? ????? ?????
  ???? ???? ???? ????? ?????

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????? ??"? ??? ????????

• ECCM capabilities of Pulse Compression
• ?????? ?????? ????? ???? ????? ???? ???? ??????
  ??????
• ??? ?? ?????? ????? ??????? ?????? ???? ?????
  ????

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????? ??"? ??? ????????

• ECCM capabilities of Pulse Compression
• ?? ??? ????? ?????, ???? ????? ECM ???? ??????,
  ?? ?????? ???? ?? ???? ??????
• ?????? ?? ????? ?????? ????, ???? ??
  ??? ????? ?? ???? ???? ?? ???"? (??? ????? B) ???
  ????? ???
• ????? ??? ?????? ???? ???? ????? ????? ???? ????
  ??? ???? jammer, ???? ?? ???? ???? ????? ?? ????
  ???? ???????

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????? ??"? ??? ????????

• ????? ????? Frequency Agility
• ????? ?????? ??????, ???? ?? ?????? ????? ???????
  ??"? ??? ??? ? ECM
• ????? ?? ????? ????? ?? ??? ?? ????
• ????? ?????? ??????? ????? ???? ?? clutters
  ??????? ???? ??? MTI

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????? ??"? ??? ????????

• ????? ????? Frequency Agility
• ?????? ?????? ?? ????? ???? ???? ?? ??? ?? ????,
  ?- jammer ?? ???? ?????? ????? ??? ??? ??
• ????? ?????? ????? ?????? ?? ???? ??? ???, ???
  ?????? ?? ?????? ?? ????? ?? ?????? ?? ?????

25
????? ??"? ??? ????????

• ????? ????? Frequency Agility
• ????? ?????? ?????? ???? ?????? ?? ??? ????? ??
  ???? ???? ?????

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Dedicated ECCM-????? ??"? ????????

• ?????? ??? ????? ????? ??????? ??? ?????
  ????????? ??? ?????? ?????? ??"?
• ??????? ?????? ????? ??"? ???????? ????
• ????? ?? ???? ?????? ?? ?????? ???

• SLB Side lobe blanking
• SLC Side lobe canceling
• AFS Automatic frequency selection
• MA Multibeam Antenna

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SLB-side lobe blanking

• ????? ?? ?????? ?????? ?? ????? ?? ??? ?????? ??
  ?????? ??? ??? ????? ???
• ?????? ?????? ??? ????? ?? ????? Multi-beam
  ??????? ?????? ??? ??? ???????.

A
B
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SLB-side lobe blanking

• ????? ????? ????? ?????? ???? ????? ???? ????
  ????? ??? ????? ???? ???? ((deception
  jamming,????? ??? (noise jamming) ????.
• ???? ????? ????? ?????? ?????? ???? ????? ??????
  ?? ???? ??????? ?????? ????? ????? ?????? ??????
  ???? ???? ????? ?????

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SLC-side lobe canceling

• ???? ?? ????? ?????? ?????? ?????? ?????
  ????????? ????? ????? ?? ?? ????? ?"? ????? ??
  ?????? ??????? ????? ??? ????
• ??? ??????.
• ????? ????? ??? ????? ???? ????
• ((cw jamming
• ????? ?? SLC ?????? ?? ???????? ?? ????? ?????
  ???? ????? ???? ?????? ??????

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AFS-automatic frequency selection

• ???"??? ????????? ??????? ???? ????? ?? ???
  ?????? ????? ???? ?????
• ????? AFS ?????? ????? ???????? ?? ??? ??????
  ?????? ?? ????? ?????? ???? ?? ?? ?? ????? ???
  ???? ???????? ???? ??????
• ????? ????? ?????? ?????? ????? ?? ???????? ???
  ???? ????? (????? ??????? ??? ???) ??? ???? ????
  PRI ????"? ?? ????.? PRI ????? ?? ????? ??????
  ??? ?????? ?? ???? ?? ?????? ????? ???
• ??????? ?????? ??? ????? ??? ??? ??????S/J
  ????? ????? ????? ????????? ????"? ???? ??? ???
  ??? ???? S/N ????? ????? ????????

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Multibeam antenna

• ???? ???"? ??? ??? ?????? ????? ?????? ?????
  ????? ????? ?? ??? ????? ?? ????? ?? ???? ???????
  ?"? ???? ????? ???"?
• ????? ????"? ??? ????? ????? ?? ???? ?? ?? ?????
  ??? ???? ??"? Phase array ????? ?????? ??? ????
  ????,?????? ?? ???"? ????? ?? ????? ???? ???????
  ???? ???? ?????? ??? ?????.

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Tracking Radar ??"? ?????

• ???? ?????? ????? ?????? ???? ????? ????? ??????
  ?? ?????,???? ????? ????????? ??????? ?? ??????
  ???"? ???? ????? ??????? ?? ???? ????? ???
  FTC,STC,RANDOM PRF
• ????? ??? ????? ??"? ?????? ??? ????? ??????
  ECCM,??? ??????? ?????? ?? ??????? ???? ?? ?????
  ???
• Low sidelobes
• Intermediate-frequency filters

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Low Sidelobes - ????? ?? ???????

• ???? ????? ?????? ????? ?????? ?? ??"? ?????? ???
  ?????? ?????? ?? ????? ????? ?????? ???.?????
  ?????? ??? ?????? ????? ??? ?? ????? ????? ????
  ?? ?????? ??????.
• ????? ???? ?????? ?? ????? ???? ?????? ??? ???
  Cassegrain Antenna
• ?? ????? ?? .30db

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Intermediate-frequency filters

• ??????? ?? ?????? ????? ?? ????? IF ??? ????,???
  ???? ?????? ???"? ????-????.
• ?????? ?????? ?? ??? ????? ?? 60db ??? ??? ???
  ????? ???? Skirt Jamming ??? ??? ?? ????? ?????
  ???? ????? ???? ???? ???? ???? ????? ?? ???? ??
  ?? ???? IF ???? ?? ???"? ???? ?????? ?????? ??
  ????? ???????? ???? ??? ???"? ????? ????
  ???? ??????????? ?? ?????.

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Dedicated ECCM in tracking mode

• ???? ??"? ??????? ????? ??
• The jamming detector
• Monopulse
• Anti Range gate pull off
• Anti Velocity gate pull off

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The jamming detector

• ?????? ?????? ?????? ??"? ??????? ???????
  ???????? ????? ?? ??? ?????? ??? ????? ???? ???
  ??????? ????? ?????? "????? ???? ?????" track on
  jam
• ?????? ?????? ????? ????? ?????? ?"? ?????? ???
  ?? ???"? ??? ????? ???? ????? ???? ????? ?"?
  ????? ????? ??????? ??????.

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Monopulse

• ????? Monopulse ??????? ?????? ?????? ?? ???
  ???????,??????? ?????? ?????? ?"? ?? ????? ?????
  ??? ?????? ?? ????? ????? ???? ?? ?????.
• ?????? ?? ???? ?????? ????? ???????? ?????
• ?????? ???? ????? ????? ???? ?? ????? ????? ??
  ?????.

• ???? ?-Monopulse ??? ???? ??????
  ?????? ???? ?????? ??????

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Anti Range Gate pull-off

• ??? ??"? ??? ????? ???? RGPO ??? ?"? ?????? ????
  ??? ????? ????? ?? ???"?, ?-RGPO ???? ????? ??
  ?-PRF ?? ???"? ??? ????? ?? ????? (?"? ?????
  ????) ??? ?????? ?? ???? ???? ????? ?????.
• ????? ?? ???"? ????? ?????? PRF ?????,?? ?????
  ??? ?? ???? ????? ?????? ??? ?????? ???"?
  ?????.????? ??? ?????
• ARGPO .

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Anti Range Gate pull-off
Leading-edge tracking of the true echo
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Anti Range Gate pull-off
Loss of balance of the range tracking loop
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Anti Velocity gate pull off

• -VGPO ?? ?"? ?????? ????? ?? ??? ????? ?? ??????
  ?? ???"? ????? ??????? ????? ?? ?????? ???? ????
  ?????? ????? ? RGPO
• ?-VGPO ???? ??? ?? ????? ??? ?? ?????? ????
  ??????? ?????.
• ????????? ??? VGPO ??? ????? ???? ????? Guard
  gates ?? ?????? ?????? ?????? ???? ???????
  ??????? ?????? ?????? ???? ??? ???.????? ???? ???
  ??? ???? ?????? ????? ????? ????? ?? ????? ????
  ????? track on jam .

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Anti Velocity gate pull off
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Infrared ECCM

• ??"? ?????? ????? ?? ?? ????? ??? ????????
  ??????? ??? ????? ?? ??? ?????? ?? ????? ?????.
• ??? ??? ?? ?? ??"? ???? ?????? ????? ?? ???????
  ???????? ?????? ?"? ????? ????? ??? ???? ??????
  ???.

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Anti radiation missile ARM

• ???? ???? ??? ??????? ?? ?????? ?? ???"? ??????
  ??
• ??????? ?????? ?? ????? ???? ??? ??????? ??
  ?????? ????? ?????? ??? ?? ????? ?? ????? ??????
• ???"? ?? ????? ?? ??????? ??? ????? ?????? ???
  ???? ????????? ,??? ??"? ???? ?? ???? ???? ?????
  ?????? ?? ??????.

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Any Questions?