FR2424544A1 - Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics - Google Patents

Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics

Info

Publication number
FR2424544A1
FR2424544A1 FR7812126A FR7812126A FR2424544A1 FR 2424544 A1 FR2424544 A1 FR 2424544A1 FR 7812126 A FR7812126 A FR 7812126A FR 7812126 A FR7812126 A FR 7812126A FR 2424544 A1 FR2424544 A1 FR 2424544A1
Authority
FR
France
Prior art keywords
phase
radar system
pseudo
wave
employs
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.)
Pending
Application number
FR7812126A
Other languages
French (fr)
Inventor
Sergio Florencio Valdes
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR7812126A priority Critical patent/FR2424544A1/en
Priority to NL7805061A priority patent/NL7805061A/en
Publication of FR2424544A1 publication Critical patent/FR2424544A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/325—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of coded signals, e.g. P.S.K. signals
    • 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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/583—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets
    • G01S13/584—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets adapted for simultaneous range and velocity measurements
    • 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
    • G01S13/66—Radar-tracking systems; Analogous systems
    • G01S13/70—Radar-tracking systems; Analogous systems for range tracking only

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

In a pseudo-noise radar system a maximal length binary pulse code of amplitude zero or A amplitude modulates a carrier wave and reverses its phase 180 degrees in synchronism. Either the amplitude modulated or phase reversed wave is transmitted. The received wave is passed through a multiplicative mixer that receives the other wave as an input. The mixer output is effectively (L + 1)/2 when correlated and effectively zero when phase shifted one bit to one bit less than a word, L being the word length. Signals not correlated are attenuated straight. The radar system may be used with conventional equipment for fire control, missile range and/or velocity tracking.
FR7812126A 1978-04-25 1978-04-25 Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics Pending FR2424544A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7812126A FR2424544A1 (en) 1978-04-25 1978-04-25 Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics
NL7805061A NL7805061A (en) 1978-04-25 1978-05-11 PSEUDO NOISE GEARS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7812126A FR2424544A1 (en) 1978-04-25 1978-04-25 Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics
NL7805061A NL7805061A (en) 1978-04-25 1978-05-11 PSEUDO NOISE GEARS.

Publications (1)

Publication Number Publication Date
FR2424544A1 true FR2424544A1 (en) 1979-11-23

Family

ID=26220563

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812126A Pending FR2424544A1 (en) 1978-04-25 1978-04-25 Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics

Country Status (2)

Country Link
FR (1) FR2424544A1 (en)
NL (1) NL7805061A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222587A (en) * 1939-06-16 1940-11-19 Rca Corp Radio altimeter
US3130404A (en) * 1961-05-29 1964-04-21 Gen Precision Inc F. m. range finder with doppler error compensation
US3290677A (en) * 1962-12-31 1966-12-06 Trw Inc Continuous wave angle and range determining radar
US3341849A (en) * 1966-01-26 1967-09-12 Bendix Corp Self-calibrating, self-testing radio altimeter
US3641573A (en) * 1969-11-26 1972-02-08 Itt Pseudonoise radar system
US3659292A (en) * 1970-08-13 1972-04-25 Nasa Binary coded sequential acquisition ranging system
US3900873A (en) * 1972-08-02 1975-08-19 Dassault Electronique Installation for measurement by radio-electric transmission of a distance between two stations
US4005420A (en) * 1975-03-12 1977-01-25 Esterline Electronics Corporation CW radar system
US4042925A (en) * 1975-11-24 1977-08-16 International Telephone And Telegraph Corporation Pseudo-random code (PRC) surveilance radar
US4051472A (en) * 1974-04-08 1977-09-27 International Telephone And Telegraph Corporation Large area motion sensor using pseudo-random coding technique

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222587A (en) * 1939-06-16 1940-11-19 Rca Corp Radio altimeter
US3130404A (en) * 1961-05-29 1964-04-21 Gen Precision Inc F. m. range finder with doppler error compensation
US3290677A (en) * 1962-12-31 1966-12-06 Trw Inc Continuous wave angle and range determining radar
US3341849A (en) * 1966-01-26 1967-09-12 Bendix Corp Self-calibrating, self-testing radio altimeter
US3641573A (en) * 1969-11-26 1972-02-08 Itt Pseudonoise radar system
US3659292A (en) * 1970-08-13 1972-04-25 Nasa Binary coded sequential acquisition ranging system
US3900873A (en) * 1972-08-02 1975-08-19 Dassault Electronique Installation for measurement by radio-electric transmission of a distance between two stations
US4051472A (en) * 1974-04-08 1977-09-27 International Telephone And Telegraph Corporation Large area motion sensor using pseudo-random coding technique
US4005420A (en) * 1975-03-12 1977-01-25 Esterline Electronics Corporation CW radar system
US4042925A (en) * 1975-11-24 1977-08-16 International Telephone And Telegraph Corporation Pseudo-random code (PRC) surveilance radar

Also Published As

Publication number Publication date
NL7805061A (en) 1979-11-13

Similar Documents

Publication Publication Date Title
US4153900A (en) Phase-coded pulse compression type pulsed energy system
SE8602243L (en)
FI864243A (en) SYNKRONISATIONSREGENERERING I TELEKOMMUNIKATIONSSYSTEM.
US4115772A (en) Pseudo-noise radar system
ES518243A0 (en) ELECTROMAGNETIC WAVE EMITTING DEVICE IN RESPONSE TO RECEIVED WAVES.
ES406984A1 (en) Device for neutralizing a fire-control radar
GB586115A (en) Methods of and systems for the demodulation of a wave which is repetitive at equal known time intervals
Milne Principles and concepts of multistatic surveillance radars
FR2424544A1 (en) Pseudo-noise radar system - employs bi-phase and amplitude modulation with multiplicative mixer to improve attenuation characteristics
JPS5332609A (en) Detecting system for interference signal by means of time sharing
JPS5742871A (en) Radio-wave reflection system
JPS51135392A (en) Echo detectiong system
JPS53131815A (en) Phase linear type emphasizer
JPS57114832A (en) Deector for leakage of liquid transport pipeline
FR2380557A1 (en) Radar pseudo-noise guidance system with spill over rejection - achieves suppression by decoding spill over at receiving antenna range from transmitter
GB1404590A (en) Radio signalling equipment
JPS5692480A (en) Radio wave transmitter
Vetiugov et al. Noise immunity of digital transmission over waveguide communications lines
JPS6449334A (en) Transmitter and receiver for radar
JPS54162920A (en) Data trasmission system
NL7801649A (en) Data transmission system with measured values modulating IR beam - has receiver with two sensitive elements to distinguish between information and interference signals
EP0138584A3 (en) Self referring type of optical communication system
JPS5526711A (en) Transmitter-receiver
Cohen A nonlinear integer programming algorithm for the design of radar waveforms
JPS55107968A (en) Underwater transmitter/receiver using identification symbol