JPS5443497A - Mobile object catching device - Google Patents

Mobile object catching device

Info

Publication number
JPS5443497A
JPS5443497A JP11010277A JP11010277A JPS5443497A JP S5443497 A JPS5443497 A JP S5443497A JP 11010277 A JP11010277 A JP 11010277A JP 11010277 A JP11010277 A JP 11010277A JP S5443497 A JPS5443497 A JP S5443497A
Authority
JP
Japan
Prior art keywords
gate
regions
scan
region
direction gate
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
JP11010277A
Other languages
Japanese (ja)
Inventor
Iichiro Yamamoto
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 JP11010277A priority Critical patent/JPS5443497A/en
Publication of JPS5443497A publication Critical patent/JPS5443497A/en
Pending 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
    • 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
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays
    • G01S7/10—Providing two-dimensional and co-ordinated display of distance and direction
    • G01S7/12—Plan-position indicators, i.e. P.P.I.
    • G01S7/14—Sector, off-centre, or expanded angle display

Landscapes

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

Abstract

PURPOSE:To prevent previously the collision of ships and others and thus to ensure safety of the sailing, by dividing the radar scanning region into pural numbers of regions which are enclosed by the lines showing two distances plus directions angle line and the scanning these regions in sequence. CONSTITUTION:The gate is produced synchronizing with the transmission pulse. And width of the R-directin gate is set to the time when the electric wave propagates R2-R1, and the Az-direction gate is set to the transmission pulse time equivalent to the azimuth of O-Az1 and Az2-2pi for one scan. Thus, the first scan extracts only the target of region 11. The Az-direction gate is similar to the first scan at and after the second scan, but the R-direction gate is shifted from the upper inside of the rader screen to the outside through regions 12-16 and thus delayed by the time when the electric wave propagates the R-direction gate width of inner side by one. In this way, the extraction becomes possible for regions 12-16. Furthermore, the shift is given from inside to outside of the region, and the target is registered from the place closer to the own ship. Thus, the gangerous ships near the own ship can be caught assuredly.
JP11010277A 1977-09-12 1977-09-12 Mobile object catching device Pending JPS5443497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11010277A JPS5443497A (en) 1977-09-12 1977-09-12 Mobile object catching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11010277A JPS5443497A (en) 1977-09-12 1977-09-12 Mobile object catching device

Publications (1)

Publication Number Publication Date
JPS5443497A true JPS5443497A (en) 1979-04-06

Family

ID=14527078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11010277A Pending JPS5443497A (en) 1977-09-12 1977-09-12 Mobile object catching device

Country Status (1)

Country Link
JP (1) JPS5443497A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56500621A (en) * 1979-06-06 1981-05-07
JPS61245075A (en) * 1985-04-22 1986-10-31 Toyo Commun Equip Co Ltd Near-by aircraft detecting system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843894A (en) * 1971-10-07 1973-06-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843894A (en) * 1971-10-07 1973-06-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56500621A (en) * 1979-06-06 1981-05-07
JPS61245075A (en) * 1985-04-22 1986-10-31 Toyo Commun Equip Co Ltd Near-by aircraft detecting system

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