GB1370873A - Polyphase encoding-decoding system - Google Patents

Polyphase encoding-decoding system

Info

Publication number
GB1370873A
GB1370873A GB1299173A GB1299173A GB1370873A GB 1370873 A GB1370873 A GB 1370873A GB 1299173 A GB1299173 A GB 1299173A GB 1299173 A GB1299173 A GB 1299173A GB 1370873 A GB1370873 A GB 1370873A
Authority
GB
United Kingdom
Prior art keywords
signals
phase
signal
accumulator
processing
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
GB1299173A
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.)
Raytheon Co
Original Assignee
Hughes Aircraft Co
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
Priority to US00073470A priority Critical patent/US3731311A/en
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Priority to GB1299173A priority patent/GB1370873A/en
Priority to DE19732315346 priority patent/DE2315346B2/de
Priority claimed from DE19732315346 external-priority patent/DE2315346B2/de
Priority to FR7311646A priority patent/FR2223905B1/fr
Publication of GB1370873A publication Critical patent/GB1370873A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
    • H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB1299173A 1970-09-18 1973-03-19 Polyphase encoding-decoding system Expired GB1370873A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US00073470A US3731311A (en) 1970-09-18 1970-09-18 Polyphase encoding-decoding system
GB1299173A GB1370873A (en) 1970-09-18 1973-03-19 Polyphase encoding-decoding system
DE19732315346 DE2315346B2 (de) 1973-03-28 Vorrichtung zur Korrelations-Decodierung unter Einbeziehung von Amplitudengewichtung phasenmodulierter Signale
FR7311646A FR2223905B1 (enExample) 1970-09-18 1973-03-30

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US7347070A 1970-09-18 1970-09-18
GB1299173A GB1370873A (en) 1970-09-18 1973-03-19 Polyphase encoding-decoding system
DE19732315346 DE2315346B2 (de) 1973-03-28 Vorrichtung zur Korrelations-Decodierung unter Einbeziehung von Amplitudengewichtung phasenmodulierter Signale
FR7311646A FR2223905B1 (enExample) 1970-09-18 1973-03-30

Publications (1)

Publication Number Publication Date
GB1370873A true GB1370873A (en) 1974-10-16

Family

ID=27431661

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1299173A Expired GB1370873A (en) 1970-09-18 1973-03-19 Polyphase encoding-decoding system

Country Status (3)

Country Link
US (1) US3731311A (enExample)
FR (1) FR2223905B1 (enExample)
GB (1) GB1370873A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115247A (en) * 1988-02-16 1992-05-19 Honeywell Inc. Frequency modulated, phase coded radar

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1474026A (en) * 1973-08-10 1977-05-18 Marconi Co Ltd Pulse compression
FR2489000A1 (fr) * 1980-08-20 1982-02-26 Labo Cent Telecommunicat Dispositif permettant de diminuer les lobes secondaires d'autocorrelation dans un radar a compression d'impulsion
US4353067A (en) * 1980-08-29 1982-10-05 Westinghouse Electric Corp. Method of reducing side lobes of complementary coded pulses in a coherent pulse compression doppler radar receiving system
US4698827A (en) * 1981-11-27 1987-10-06 The United States Of America As Represented By The Secretary Of The Navy Generalized polyphase code pulse compressor
US4734699A (en) * 1986-04-07 1988-03-29 The United States Of America As Represented By The Secretary Of The Navy Doppler-improved polyphase pulse expander-compressor
US4860014A (en) * 1987-11-25 1989-08-22 The United State Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Doppler radar with multiphase modulation of transmitted and reflected signal
GB2248355B (en) * 1990-09-26 1994-07-13 British Aerospace Digital chirp generator
US5735285A (en) * 1996-06-04 1998-04-07 Data Critical Corp. Method and hand-held apparatus for demodulating and viewing frequency modulated biomedical signals
US6264614B1 (en) 1999-08-31 2001-07-24 Data Critical Corporation System and method for generating and transferring medical data
US9351654B2 (en) 2010-06-08 2016-05-31 Alivecor, Inc. Two electrode apparatus and methods for twelve lead ECG
US8700137B2 (en) 2012-08-30 2014-04-15 Alivecor, Inc. Cardiac performance monitoring system for use with mobile communications devices
US8509882B2 (en) 2010-06-08 2013-08-13 Alivecor, Inc. Heart monitoring system usable with a smartphone or computer
US8301232B2 (en) 2010-06-08 2012-10-30 Alivecor, Inc. Wireless, ultrasonic personal health monitoring system
WO2014074913A1 (en) 2012-11-08 2014-05-15 Alivecor, Inc. Electrocardiogram signal detection
WO2014107700A1 (en) 2013-01-07 2014-07-10 Alivecor, Inc. Methods and systems for electrode placement
US9254092B2 (en) 2013-03-15 2016-02-09 Alivecor, Inc. Systems and methods for processing and analyzing medical data
US9247911B2 (en) 2013-07-10 2016-02-02 Alivecor, Inc. Devices and methods for real-time denoising of electrocardiograms
EP4537748A1 (en) 2013-12-12 2025-04-16 Alivecor, Inc. Methods and systems for arrhythmia tracking and scoring
CN107847154B (zh) 2015-05-13 2021-07-16 阿利弗克公司 不一致监测
US10390758B2 (en) 2016-03-24 2019-08-27 Samsung Electronics Co., Ltd. Method and apparatus for triage and subsequent escalation based on biosignals or biometrics
DE102016218643A1 (de) * 2016-09-28 2018-03-29 Robert Bosch Gmbh Verfahren zum Auswerten von Radarstrahlung und Radarvorrichtung
US10945706B2 (en) 2017-05-05 2021-03-16 Biim Ultrasound As Hand held ultrasound probe
CN113542927B (zh) * 2021-07-14 2023-09-22 国网江苏省电力有限公司营销服务中心 一种基于线性反馈移位的远传表计唤醒方法及装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096482A (en) * 1957-04-11 1963-07-02 Sperry Rand Corp Phase coded signal receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115247A (en) * 1988-02-16 1992-05-19 Honeywell Inc. Frequency modulated, phase coded radar

Also Published As

Publication number Publication date
DE2315346C3 (enExample) 1978-04-06
FR2223905A1 (enExample) 1974-10-25
US3731311A (en) 1973-05-01
FR2223905B1 (enExample) 1976-11-05
DE2315346A1 (de) 1974-10-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee