GB1518579A - Method of and apparatus for measuring the frequency of non-coherent wave beam - Google Patents

Method of and apparatus for measuring the frequency of non-coherent wave beam

Info

Publication number
GB1518579A
GB1518579A GB4864376A GB4864376A GB1518579A GB 1518579 A GB1518579 A GB 1518579A GB 4864376 A GB4864376 A GB 4864376A GB 4864376 A GB4864376 A GB 4864376A GB 1518579 A GB1518579 A GB 1518579A
Authority
GB
United Kingdom
Prior art keywords
value
bad
counter
mean value
initialization
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
GB4864376A
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding 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
Priority claimed from CH1518975A external-priority patent/CH601804A5/xx
Application filed by Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Publication of GB1518579A publication Critical patent/GB1518579A/en
Expired 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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/585—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value
    • 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
    • G01S7/28—Details of pulse systems
    • G01S7/2806—Employing storage or delay devices which preserve the pulse form of the echo signal, e.g. for comparing and combining echoes received during different periods

Landscapes

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

Abstract

This method is used for determining a Doppler frequency. In this method, the number of zero crossings of the input signal (ES) is counted by means of a "bad-value counter", the counter (7) is reset to zero with each ("good") value deviating from the last mean value by less than the predetermined percentage whilst the "bad" measurement values cause the bad-value counter (7) to be incremented; at a particular count, the bad-value counter, bypassing the comparison logic (2), causes the memory (3) to be filled up directly so that the same last value is stored at each storage location and, using the normal arithmetic of the averaging circuit (4), the duration of the last period is calculated as "provisional mean value" which replaces the normally formed mean value during the next evaluating operation so that in the case of initialization with a "good" value, the normal evaluating procedure leads to a valid mean value whilst in the case of initialization with a "bad" value the self-monitoring with the bad-value counter leads to a new initialization process. <IMAGE>
GB4864376A 1975-11-24 1976-11-22 Method of and apparatus for measuring the frequency of non-coherent wave beam Expired GB1518579A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1518975A CH601804A5 (en) 1975-11-24 1975-11-24
CH1531275A CH608621A5 (en) 1975-11-24 1975-11-26 Method for measuring the frequency and duration of periods of non-coherent wave packets

Publications (1)

Publication Number Publication Date
GB1518579A true GB1518579A (en) 1978-07-19

Family

ID=25715901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4864376A Expired GB1518579A (en) 1975-11-24 1976-11-22 Method of and apparatus for measuring the frequency of non-coherent wave beam

Country Status (5)

Country Link
CH (1) CH608621A5 (en)
DE (1) DE2600433C2 (en)
FR (1) FR2333246A2 (en)
GB (1) GB1518579A (en)
NL (1) NL7612958A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119526A (en) * 1982-04-19 1983-11-16 Gen Electric Analysing waveforms
GB2191353B (en) * 1986-05-28 1990-06-27 Marconi Instruments Ltd Fm frequency measuring apparatus
CN116203315A (en) * 2023-05-06 2023-06-02 国仪量子(合肥)技术有限公司 Frequency measurement method and device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411418A1 (en) * 1977-12-08 1979-07-06 Labo Cent Telecommunicat METHOD AND DEVICE FOR ELIMINATING MULTIPLE RETURN ECHOES FOR PULSE DOPPLER RADARS
FR2531225A3 (en) * 1982-07-28 1984-02-03 Faiveley Ets Method of measuring kinematic parameters of a land vehicle, device for implementation thereof and application to a railway vehicle.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1283809A (en) * 1970-12-08 1972-08-02 Mullard Ltd Improvements in or relating to the automatic measurement of pulse repetition intervals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2119526A (en) * 1982-04-19 1983-11-16 Gen Electric Analysing waveforms
GB2191353B (en) * 1986-05-28 1990-06-27 Marconi Instruments Ltd Fm frequency measuring apparatus
CN116203315A (en) * 2023-05-06 2023-06-02 国仪量子(合肥)技术有限公司 Frequency measurement method and device

Also Published As

Publication number Publication date
DE2600433A1 (en) 1977-06-08
NL7612958A (en) 1977-05-31
CH608621A5 (en) 1979-01-15
DE2600433C2 (en) 1984-01-19
FR2333246A2 (en) 1977-06-24
FR2333246B2 (en) 1983-06-24

Similar Documents

Publication Publication Date Title
US2789267A (en) System for testing pulse generators
GB1518579A (en) Method of and apparatus for measuring the frequency of non-coherent wave beam
ES451597A1 (en) Event monitoring transceiver
DE3135969C2 (en) Ultrasonic testing method for the detection of imperfections in workpieces and ultrasonic testing device with a diaphragm switch to carry out the method
FR2332539A1 (en) Frequency and duration measurement of non-coherent wave packets - using doppler techniques and electronic processing circuits for test criteria for next duration period
JPS5574463A (en) Rotary variation measuring device
JPS52133284A (en) Probing device equipped with automatic inspection function
JPS5322757A (en) Testing apparatus of electric a ppliances
JPS5473511A (en) Transmission error detector device for facsimile
JPS53128238A (en) Velocity test system
SU957121A1 (en) Pulse train average frequency meter
JPS5673358A (en) Testing device for memory
SU954887A1 (en) Pulse train frequency measuring device
RU1820319C (en) Method of registration of signals in ultrasonic inspection and device for its implementation
SU463923A1 (en) Method of calibrating the sensitivity of digital devices with frequency conversion
SU1013757A1 (en) Ultrasonic echo-pulse thickness meter
JPS55138666A (en) Ic testing apparatus
BROSNAN Extended life testing evaluation of complementary MOS integrated circuits(Extended life testing of complementary MOS integrated circuits)[Final Report, Mar. 1971- May 1972]
SU1640621A1 (en) Picture monitor for non-destructive testing
SU1188640A1 (en) Arrangement for measuring coefficient of acoustic oscillation damping
JPS59203971A (en) Inspecting device of lsi
JPS56111463A (en) Ultrasonic-wave flaw detecting method for weld part
SU658495A2 (en) Arrangement for measuring characteristics of random process overshoots
JPS5552953A (en) Signal observer
JPS567062A (en) Wiring harness automatic checker

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921122