JPS5565178A - Measuring method of direction of point of falling of thunderbolt - Google Patents

Measuring method of direction of point of falling of thunderbolt

Info

Publication number
JPS5565178A
JPS5565178A JP13886478A JP13886478A JPS5565178A JP S5565178 A JPS5565178 A JP S5565178A JP 13886478 A JP13886478 A JP 13886478A JP 13886478 A JP13886478 A JP 13886478A JP S5565178 A JPS5565178 A JP S5565178A
Authority
JP
Japan
Prior art keywords
falling
thunderbolt
point
measuring method
electromagnetic waves
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
JP13886478A
Other languages
Japanese (ja)
Inventor
Michihiko Kusunoki
Ryosuke Kaizu
Hiroaki Koga
Akihiro Adachi
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP13886478A priority Critical patent/JPS5565178A/en
Publication of JPS5565178A publication Critical patent/JPS5565178A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

PURPOSE: To accurately measure the direction of the point of falling of a thunderbolt, by using the reception antenna for the electromagnetic waves of falling of a thunderbolt, which consists of less number of antenna elements.
CONSTITUTION: The induced voltage produced on the antenna elements 1W4 by the falling thunderbolt electromagnetic waves from the falling point is inputted to the level comparison and selection section 7 via the amplifying and detection section 6. The level comparison and selection section 7 compares the DC voltage inputted, selects the maximum value with the next value to output it to the operation section 8, where the calculation of the (maximum value)/(next value) is made and the direction of the falling point is displayed on the display unit 9.
COPYRIGHT: (C)1980,JPO&Japio
JP13886478A 1978-11-13 1978-11-13 Measuring method of direction of point of falling of thunderbolt Pending JPS5565178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13886478A JPS5565178A (en) 1978-11-13 1978-11-13 Measuring method of direction of point of falling of thunderbolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13886478A JPS5565178A (en) 1978-11-13 1978-11-13 Measuring method of direction of point of falling of thunderbolt

Publications (1)

Publication Number Publication Date
JPS5565178A true JPS5565178A (en) 1980-05-16

Family

ID=15231907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13886478A Pending JPS5565178A (en) 1978-11-13 1978-11-13 Measuring method of direction of point of falling of thunderbolt

Country Status (1)

Country Link
JP (1) JPS5565178A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009229077A (en) * 2008-03-19 2009-10-08 Sumitomo Electric Ind Ltd Road-vehicle communication system, optical beacon for use in it, and vehicle position evaluation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040754U (en) * 1973-08-18 1975-04-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5040754U (en) * 1973-08-18 1975-04-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009229077A (en) * 2008-03-19 2009-10-08 Sumitomo Electric Ind Ltd Road-vehicle communication system, optical beacon for use in it, and vehicle position evaluation method

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