GB1315873A - Telecommunications systems - Google Patents

Telecommunications systems

Info

Publication number
GB1315873A
GB1315873A GB2166571A GB2166571A GB1315873A GB 1315873 A GB1315873 A GB 1315873A GB 2166571 A GB2166571 A GB 2166571A GB 2166571 A GB2166571 A GB 2166571A GB 1315873 A GB1315873 A GB 1315873A
Authority
GB
United Kingdom
Prior art keywords
function
modulation
frequency
delay
pfi
Prior art date
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
GB2166571A
Other languages
English (en)
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.)
Siemens AG
Original Assignee
Siemens AG
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.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1315873A publication Critical patent/GB1315873A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/25—Countermeasures against jamming based on characteristics of target signal or of transmission, e.g. using direct sequence spread spectrum or fast frequency hopping
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
    • G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses
    • G01S13/284—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses
    • G01S13/288—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses using coded pulses phase modulated
    • 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
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • 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
    • H04K3/827—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection using characteristics of target signal or of transmission, e.g. using direct sequence spread spectrum or fast frequency hopping

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB2166571A 1970-02-24 1971-04-19 Telecommunications systems Expired GB1315873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702008560 DE2008560C3 (de) 1970-02-24 1970-02-24 Nachrichtenübertragungssystem unter Verwendung von Puls-Code-Modulation und empfangsseitiger Pulskompression

Publications (1)

Publication Number Publication Date
GB1315873A true GB1315873A (en) 1973-05-02

Family

ID=5763234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2166571A Expired GB1315873A (en) 1970-02-24 1971-04-19 Telecommunications systems

Country Status (3)

Country Link
DE (1) DE2008560C3 (de)
GB (1) GB1315873A (de)
NL (1) NL7102464A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO129973B (de) * 1972-10-16 1974-06-17 Kongsberg Vapenfab As
FR2248517B1 (de) * 1973-10-23 1978-08-04 Sercel Rech Const Elect
DE2365675C1 (de) * 1973-11-09 1988-11-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
CH613527A5 (en) * 1976-02-27 1979-09-28 Patelhold Patentverwertung Circuit arrangement for separating responses arriving simultaneously in a secondary radar system
DE2808545C2 (de) * 1978-02-28 1984-10-25 Siemens AG, 1000 Berlin und 8000 München Kombinierte Radar- und Nachrichtenübertragungseinrichtung

Also Published As

Publication number Publication date
DE2008560A1 (de) 1971-09-09
DE2008560B2 (de) 1973-07-12
DE2008560C3 (de) 1974-03-07
NL7102464A (de) 1971-08-26

Similar Documents

Publication Publication Date Title
US2415359A (en) Wave-signal translating system
GB1250352A (de)
GB1210445A (en) Device for the transmission of synchronous pulse signals
GB1079928A (en) A data transmission system
GB1017322A (en) Improvements in and relating to pulse signal transmission and receiving systems
US2851617A (en) Bipolarity gate
GB1087860A (en) Improvements in or relating to pulse transmission apparatus
GB634372A (en) Improvements in or relating to pulse modulation signalling systems
GB1315873A (en) Telecommunications systems
GB1179378A (en) Improvements in or relating to Data Transmission Systems
GB910453A (en) Improvements in or relating to data transmission systems
GB929890A (en) Improvements in or relating to apparatus for receiving permutation code groups of pulses
GB1289378A (de)
GB604817A (en) Improvements relating to multi-channel pulse communication systems
GB1064250A (en) Code checking circuit and multifrequency data receiver
GB935694A (en) Radar system
SU430426A1 (ru) Приемник требований на обслуживание устройства для группового телеуправления
JPS5739610A (en) Broadband ccd delay line
FR2528640B1 (de)
SU720745A1 (ru) Двухканальное устройство ретрансл ции дискретных сигналов
GB1020361A (en) A circuit arrangement for the conversion of a serial sequence of binary data
JPS56119557A (en) Communication mode switching system
GB986012A (en) Method of receiving voice-frequency code signals
JPS5642452A (en) Modulation-demodulation system
GB996835A (en) Multi-frequency code signalling method

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees