JPS5518958A - Electronic scanning radar - Google Patents

Electronic scanning radar

Info

Publication number
JPS5518958A
JPS5518958A JP9194778A JP9194778A JPS5518958A JP S5518958 A JPS5518958 A JP S5518958A JP 9194778 A JP9194778 A JP 9194778A JP 9194778 A JP9194778 A JP 9194778A JP S5518958 A JPS5518958 A JP S5518958A
Authority
JP
Japan
Prior art keywords
beams
expanded
region
shape
shorten
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.)
Granted
Application number
JP9194778A
Other languages
Japanese (ja)
Other versions
JPS6247002B2 (en
Inventor
Toshiyuki Izumitani
Shinichi Ito
Hiroshi Yokoyama
Naohisa Goto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9194778A priority Critical patent/JPS5518958A/en
Publication of JPS5518958A publication Critical patent/JPS5518958A/en
Publication of JPS6247002B2 publication Critical patent/JPS6247002B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns

Abstract

PURPOSE:To shorten the beam scanning time, while holding the accuracy of an elevation, by setting a proper shift in a phase shifter so that the beam shape is expanded substantially in a Gauss shape. CONSTITUTION:In order to realize the vertical voer area 21 which is required for radar for scanning a pencil beam, in a low elevation region having the maximum covering distance, this region is covered with beams 40-1, 40-2 and so on having such beam width as are determined as small as possible by the aperture of an antenna. A high elevation region having short covering distance is made to have its beam width expanded as much as possible for the antenna gain so that the beam spacings are also expanded proportionally. As a result, a shift is set properly in a phase shifter by the command of a beam controller 11 so that the beam shape is formed into that of a Gauss function. As a result, the angle calculation can be simplified by the interporation of the beams, and the number of the beams in a vertical plane is reduced to shorten the scanning time.
JP9194778A 1978-07-26 1978-07-26 Electronic scanning radar Granted JPS5518958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9194778A JPS5518958A (en) 1978-07-26 1978-07-26 Electronic scanning radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9194778A JPS5518958A (en) 1978-07-26 1978-07-26 Electronic scanning radar

Publications (2)

Publication Number Publication Date
JPS5518958A true JPS5518958A (en) 1980-02-09
JPS6247002B2 JPS6247002B2 (en) 1987-10-06

Family

ID=14040774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9194778A Granted JPS5518958A (en) 1978-07-26 1978-07-26 Electronic scanning radar

Country Status (1)

Country Link
JP (1) JPS5518958A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813708U (en) * 1981-07-17 1983-01-28 株式会社東芝 array antenna device
JP2011095038A (en) * 2009-10-28 2011-05-12 Nec Corp Radar device, method of beam scanning used for the radar device, and beam scanning control program
JP2014021031A (en) * 2012-07-23 2014-02-03 Japan Radio Co Ltd Target observation support device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5813708U (en) * 1981-07-17 1983-01-28 株式会社東芝 array antenna device
JP2011095038A (en) * 2009-10-28 2011-05-12 Nec Corp Radar device, method of beam scanning used for the radar device, and beam scanning control program
JP2014021031A (en) * 2012-07-23 2014-02-03 Japan Radio Co Ltd Target observation support device

Also Published As

Publication number Publication date
JPS6247002B2 (en) 1987-10-06

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