JPS5497397A - Formation method of radar beam - Google Patents

Formation method of radar beam

Info

Publication number
JPS5497397A
JPS5497397A JP490378A JP490378A JPS5497397A JP S5497397 A JPS5497397 A JP S5497397A JP 490378 A JP490378 A JP 490378A JP 490378 A JP490378 A JP 490378A JP S5497397 A JPS5497397 A JP S5497397A
Authority
JP
Japan
Prior art keywords
theta20
beams
group
boundary part
interpolating process
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
JP490378A
Other languages
Japanese (ja)
Inventor
Yoshikazu Sato
Yasuhiro Toshiami
Toshiyuki Izumitani
Shinichi Ito
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 JP490378A priority Critical patent/JPS5497397A/en
Publication of JPS5497397A publication Critical patent/JPS5497397A/en
Pending 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

Landscapes

  • Radar Systems Or Details Thereof (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To reduce interference with a disturbing wave, and to improve angle- measuring accuracy by eliminating the need for an inter-beam interpolating process at boundary part among beam groups, by forming beams at the beam-group boundary part in the same direction as beams at the ajacent beam-group boundary part. CONSTITUTION:In required vertical-surface covering area 2 to antenna 1, 20-1 20-2 and 20-3 are lowermost beam groups using frequencies (f1), (f2) and (f3), and theta20-1, theta20-2 and theta20-3 are respective beam directions. Next, 21-1 is the lowermost beam in the 2nd beam group from the bottom and its beam direction theta21-1 agrees with theta20-3. Therefore, an interpolating process to obtain altitude information on a target is performed with frequency difference f2-f1=DELTAf between beams 20-1 and 20-2, but since the beam directions between beams 20-3 21-1 are equal, there is no need for interpolation. After this, an interpolating process as to the 2nd beam group can be done with frequency difference DELTAf. Therefore, correlation among inter- beam received signals is uniform in any direction and uniform angle-measuring accuracy can be obtained over the entire covering area.
JP490378A 1978-01-19 1978-01-19 Formation method of radar beam Pending JPS5497397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP490378A JPS5497397A (en) 1978-01-19 1978-01-19 Formation method of radar beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP490378A JPS5497397A (en) 1978-01-19 1978-01-19 Formation method of radar beam

Publications (1)

Publication Number Publication Date
JPS5497397A true JPS5497397A (en) 1979-08-01

Family

ID=11596609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP490378A Pending JPS5497397A (en) 1978-01-19 1978-01-19 Formation method of radar beam

Country Status (1)

Country Link
JP (1) JPS5497397A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62259077A (en) * 1986-05-02 1987-11-11 Honda Motor Co Ltd Monopulse radar device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4849392A (en) * 1971-05-01 1973-07-12
JPS4865891A (en) * 1971-12-01 1973-09-10
JPS518719A (en) * 1974-07-12 1976-01-23 Kumagai Gumi Co Ltd Pc bannosetsugokosei
JPS546493A (en) * 1977-06-16 1979-01-18 Mitsubishi Electric Corp Mono pulse electron scanning antenna of stacked beam

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4849392A (en) * 1971-05-01 1973-07-12
JPS4865891A (en) * 1971-12-01 1973-09-10
JPS518719A (en) * 1974-07-12 1976-01-23 Kumagai Gumi Co Ltd Pc bannosetsugokosei
JPS546493A (en) * 1977-06-16 1979-01-18 Mitsubishi Electric Corp Mono pulse electron scanning antenna of stacked beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62259077A (en) * 1986-05-02 1987-11-11 Honda Motor Co Ltd Monopulse radar device

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