JPS56717A - Radar unit with shield cover - Google Patents

Radar unit with shield cover

Info

Publication number
JPS56717A
JPS56717A JP7472679A JP7472679A JPS56717A JP S56717 A JPS56717 A JP S56717A JP 7472679 A JP7472679 A JP 7472679A JP 7472679 A JP7472679 A JP 7472679A JP S56717 A JPS56717 A JP S56717A
Authority
JP
Japan
Prior art keywords
side lobe
lobe
cover
shield cover
antenna
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
JP7472679A
Other languages
Japanese (ja)
Inventor
Akira Matsumura
Katsuhiro Kimura
Kenji Sekine
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.)
Hitachi Ltd
Nissan Motor Co Ltd
Original Assignee
Hitachi Ltd
Nissan Motor 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.)
Filing date
Publication date
Application filed by Hitachi Ltd, Nissan Motor Co Ltd filed Critical Hitachi Ltd
Priority to JP7472679A priority Critical patent/JPS56717A/en
Publication of JPS56717A publication Critical patent/JPS56717A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
    • 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
    • G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
    • 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
    • G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
    • 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
    • G01S7/2813—Means providing a modification of the radiation pattern for cancelling noise, clutter or interfering signals, e.g. side lobe suppression, side lobe blanking, null-steering arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/0208—Corrugated horns

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Details Of Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To enable to obtain the speed measurement of high reliability from low to high speed under the mounting on automobiles, by providing the shield cover giving attenuation effect only to the side lobe of antenna. CONSTITUTION:It is important to avoid the side lobe of vertical direction to increase the accuracy of speed detection as a speedometer. Thus, the shield cover 9 is fixed on the existing radar unit 2 with the fixed screw 3. That is, the electromagnetic wave absorbing plate 10 such as rubber-ferrite is placed inside the cover 9 to attenuate the side lobe (especially, vertical side lobe) caused without giving effect on the main lobe radiated from the horn antenna 4, allowing to use the antenna only with the main lobe 3 in fact. Further, the cover 9 is provided with the opening 91 for the main lobe 5, where dielectric substance plate (''Teflon R '') 11 is provided, small in high frequency loss, as dust and water proof provision.
JP7472679A 1979-06-15 1979-06-15 Radar unit with shield cover Pending JPS56717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7472679A JPS56717A (en) 1979-06-15 1979-06-15 Radar unit with shield cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7472679A JPS56717A (en) 1979-06-15 1979-06-15 Radar unit with shield cover

Publications (1)

Publication Number Publication Date
JPS56717A true JPS56717A (en) 1981-01-07

Family

ID=13555511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7472679A Pending JPS56717A (en) 1979-06-15 1979-06-15 Radar unit with shield cover

Country Status (1)

Country Link
JP (1) JPS56717A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835479A (en) * 1981-08-28 1983-03-02 Toshiba Corp Radar device
JPS5837575A (en) * 1981-08-28 1983-03-04 Toshiba Corp Radar device
JPS58154681A (en) * 1982-03-10 1983-09-14 Nissan Motor Co Ltd Device for measuring car speed by doppler radar
JPS59214304A (en) * 1983-05-18 1984-12-04 Nec Corp Radome of antenna for communication
US4586356A (en) * 1984-07-02 1986-05-06 Institut De Recherches De La Siderurgie Francaise (Irsid) Process and apparatus for preventing dissymmetry in rolled beams
JPH01500475A (en) * 1986-07-25 1989-02-16 グラマン　エアロスペース　コーポレーション array antenna device
JP2004289213A (en) * 2003-03-19 2004-10-14 Toshiba Corp Wireless communication apparatus and ticket gate machine provided with the same
EP1636876A2 (en) * 2003-06-23 2006-03-22 Northrop Grumman Corporation Rf shielding elimination for linear array sar radar systems
US7206371B2 (en) * 1999-01-19 2007-04-17 Matsushita Electric Industrial Co., Ltd. Transmitting and receiving apparatus capable of the suppression of the microphonic noise in digital transmission system
JP2007232407A (en) * 2006-02-27 2007-09-13 Toyota Motor Corp Apparatus for controlling directivity of radio beam and radio type vehicle intrusion detection apparatus
US7323996B2 (en) * 2005-08-02 2008-01-29 International Business Machines Corporation RFID reader having antenna with directional attenuation panels for determining RFID tag location
JP2014029265A (en) * 2012-07-31 2014-02-13 Hitachi Automotive Systems Ltd Speed measurement device
JP2014045366A (en) * 2012-08-27 2014-03-13 Japan Radio Co Ltd Radar antenna
JP2015507738A (en) * 2011-12-23 2015-03-12 ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー Radar device for automobile, fixing device for radar apparatus, and method of manufacturing absorption element for radar apparatus
WO2022259928A1 (en) * 2021-06-10 2022-12-15 スタンレー電気株式会社 Lamp device

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5835479A (en) * 1981-08-28 1983-03-02 Toshiba Corp Radar device
JPS5837575A (en) * 1981-08-28 1983-03-04 Toshiba Corp Radar device
JPS58154681A (en) * 1982-03-10 1983-09-14 Nissan Motor Co Ltd Device for measuring car speed by doppler radar
JPS59214304A (en) * 1983-05-18 1984-12-04 Nec Corp Radome of antenna for communication
US4586356A (en) * 1984-07-02 1986-05-06 Institut De Recherches De La Siderurgie Francaise (Irsid) Process and apparatus for preventing dissymmetry in rolled beams
JPH01500475A (en) * 1986-07-25 1989-02-16 グラマン　エアロスペース　コーポレーション array antenna device
US7206371B2 (en) * 1999-01-19 2007-04-17 Matsushita Electric Industrial Co., Ltd. Transmitting and receiving apparatus capable of the suppression of the microphonic noise in digital transmission system
JP2004289213A (en) * 2003-03-19 2004-10-14 Toshiba Corp Wireless communication apparatus and ticket gate machine provided with the same
EP1636876A4 (en) * 2003-06-23 2007-01-03 Northrop Grumman Corp Rf shielding elimination for linear array sar radar systems
EP1636876A2 (en) * 2003-06-23 2006-03-22 Northrop Grumman Corporation Rf shielding elimination for linear array sar radar systems
US7323996B2 (en) * 2005-08-02 2008-01-29 International Business Machines Corporation RFID reader having antenna with directional attenuation panels for determining RFID tag location
US7518520B2 (en) 2005-08-02 2009-04-14 International Business Machines Corporation RFID reader having antenna with directional attenuation panels for determining RFID tag location
JP2007232407A (en) * 2006-02-27 2007-09-13 Toyota Motor Corp Apparatus for controlling directivity of radio beam and radio type vehicle intrusion detection apparatus
JP2015507738A (en) * 2011-12-23 2015-03-12 ヴァレオ・シャルター・ウント・ゼンゾーレン・ゲーエムベーハー Radar device for automobile, fixing device for radar apparatus, and method of manufacturing absorption element for radar apparatus
JP2014029265A (en) * 2012-07-31 2014-02-13 Hitachi Automotive Systems Ltd Speed measurement device
JP2014045366A (en) * 2012-08-27 2014-03-13 Japan Radio Co Ltd Radar antenna
WO2022259928A1 (en) * 2021-06-10 2022-12-15 スタンレー電気株式会社 Lamp device

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