GB1467000A – Electrical methods and apparatus for radar jamming
– Google Patents
GB1467000A – Electrical methods and apparatus for radar jamming
– Google Patents
Electrical methods and apparatus for radar jamming
Info
Publication number
GB1467000A
GB1467000A
GB490673A
GB490673A
GB1467000A
GB 1467000 A
GB1467000 A
GB 1467000A
GB 490673 A
GB490673 A
GB 490673A
GB 490673 A
GB490673 A
GB 490673A
GB 1467000 A
GB1467000 A
GB 1467000A
Authority
GB
United Kingdom
Prior art keywords
random
jan
transponder
delay line
range gate
Prior art date
1974-01-25
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB490673A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1974-01-25
Filing date
1974-01-25
Publication date
1977-03-16
1974-01-25
Application filed by Marconi Co Ltd
filed
Critical
Marconi Co Ltd
1974-01-25
Priority to GB490673A
priority
Critical
patent/GB1467000A/en
1977-03-16
Publication of GB1467000A
publication
Critical
patent/GB1467000A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04K3/00—Jamming of communication; Counter-measures
H04K3/40—Jamming having variable characteristics
H04K3/43—Jamming having variable characteristics characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area
G—PHYSICS
G01—MEASURING; TESTING
G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
G01S13/767—Responders; Transponders
G—PHYSICS
G01—MEASURING; TESTING
G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
G01S7/38—Jamming means, e.g. producing false echoes
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04K3/00—Jamming of communication; Counter-measures
H04K3/60—Jamming involving special techniques
H04K3/68—Jamming involving special techniques using passive jamming, e.g. by shielding or reflection
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04K3/00—Jamming of communication; Counter-measures
H04K3/80—Jamming or countermeasure characterized by its function
H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
H—ELECTRICITY
H04—ELECTRIC COMMUNICATION TECHNIQUE
H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
H04K3/00—Jamming of communication; Counter-measures
H04K3/40—Jamming having variable characteristics
H04K3/45—Jamming having variable characteristics characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called “look-through mode”
Abstract
1467000 A range gate stealing transponder MARCONI CO Ltd 25 Jan 1974 [31 Jan 1973] 4906/73 Heading H4L A range gate stealing transponder incorporates a switch 14 which is closed in response to a received radar pulse to couple a time fraction of that pulse into a recirculating delay line 20 of a delay at least as long as the time fraction, means for transmitting the signals passing along the delay line over a period not less than the duration of a plurality of the time fractions, and a modulator 24 which imposes a random phase modulation on the recirculating signal (e.g. by random noise or random discrete phase shifts).
GB490673A
1974-01-25
1974-01-25
Electrical methods and apparatus for radar jamming
Expired
GB1467000A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB490673A
GB1467000A
(en)
1974-01-25
1974-01-25
Electrical methods and apparatus for radar jamming
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB490673A
GB1467000A
(en)
1974-01-25
1974-01-25
Electrical methods and apparatus for radar jamming
Publications (1)
Publication Number
Publication Date
GB1467000A
true
GB1467000A
(en)
1977-03-16
Family
ID=9786108
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB490673A
Expired
GB1467000A
(en)
1974-01-25
1974-01-25
Electrical methods and apparatus for radar jamming
Country Status (1)
Country
Link
GB
(1)
GB1467000A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2529039A1
(en)
*
1982-06-18
1983-12-23
Thomson Csf
FIXED AND / OR MOBILE PULSE GENERATOR ARBITRAIREMENTALLY LARGE AND CONTROLLED BY INCREMENTS
EP0282195A2
(en)
*
1987-03-06
1988-09-14
Raytheon Company
Radar performance monitor
US5032839A
(en)
*
1990-04-09
1991-07-16
American Electronic Laboratories, Inc.
Self-equalizing coherent optical RF memory
CN114720948A
(en)
*
2022-05-18
2022-07-08
北京宏锐星通科技有限公司
Transmitting-receiving isolation forwarding interference method and forwarding interference device based on analog delay line
1974
1974-01-25
GB
GB490673A
patent/GB1467000A/en
not_active
Expired
Cited By (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2529039A1
(en)
*
1982-06-18
1983-12-23
Thomson Csf
FIXED AND / OR MOBILE PULSE GENERATOR ARBITRAIREMENTALLY LARGE AND CONTROLLED BY INCREMENTS
EP0097565A1
(en)
*
1982-06-18
1984-01-04
Thomson-Csf
Generator of fixed and/or mobile pulses with an incrementally variable arbitrary long delay
EP0282195A2
(en)
*
1987-03-06
1988-09-14
Raytheon Company
Radar performance monitor
EP0282195A3
(en)
*
1987-03-06
1990-05-30
Raytheon Company
Radar performance monitor
US5032839A
(en)
*
1990-04-09
1991-07-16
American Electronic Laboratories, Inc.
Self-equalizing coherent optical RF memory
CN114720948A
(en)
*
2022-05-18
2022-07-08
北京宏锐星通科技有限公司
Transmitting-receiving isolation forwarding interference method and forwarding interference device based on analog delay line
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Legal Events
Date
Code
Title
Description
1977-07-27
PS
Patent sealed
1979-10-10
PCNP
Patent ceased through non-payment of renewal fee
