JPS5546608A - Calibration system for electric field intensity level - Google Patents

Calibration system for electric field intensity level

Info

Publication number
JPS5546608A
JPS5546608A JP11909078A JP11909078A JPS5546608A JP S5546608 A JPS5546608 A JP S5546608A JP 11909078 A JP11909078 A JP 11909078A JP 11909078 A JP11909078 A JP 11909078A JP S5546608 A JPS5546608 A JP S5546608A
Authority
JP
Japan
Prior art keywords
oscillator
output
mobile station
calibration
field intensity
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
JP11909078A
Other languages
Japanese (ja)
Inventor
Hideo Koo
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP11909078A priority Critical patent/JPS5546608A/en
Publication of JPS5546608A publication Critical patent/JPS5546608A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To improve the reliability of data on the measurement of electric field intensity by providing a calibration oscillator and oscillator control board to a base station, by automatically calibrating the level of an electric-field intensity measurer by controlling the calibration oscillator by a test signal from a mobile station and by recording this level calibration value at the mobile station. CONSTITUTION:A test signal sent out by sending-out unit 1 of a mobile station is demodulated by receiver 10 of a base station to operate test signal unit 20, thereby operating coaxial relays 21 and 22. Through relay 21, testing oscillator 24 and electric-field instensity measurer 15 are connected together and an oscillator start signal is sent to oscillator control board 23 through relay 22 to operate control board 23 so that the output of calibration oscillator 24 will vary at even intervals. The output of measurer 15 varies with the variable input of this oscillator and this output is converted by V/F converter 16 into a frequency, which is sent to the mobile station, where while it is demodulated by receiver 25, F/V conversion is performed, so that th output of the conversion will be recorded by the recorder of measuring board 26 through sending-back unit 1.
JP11909078A 1978-09-29 1978-09-29 Calibration system for electric field intensity level Pending JPS5546608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11909078A JPS5546608A (en) 1978-09-29 1978-09-29 Calibration system for electric field intensity level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11909078A JPS5546608A (en) 1978-09-29 1978-09-29 Calibration system for electric field intensity level

Publications (1)

Publication Number Publication Date
JPS5546608A true JPS5546608A (en) 1980-04-01

Family

ID=14752637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11909078A Pending JPS5546608A (en) 1978-09-29 1978-09-29 Calibration system for electric field intensity level

Country Status (1)

Country Link
JP (1) JPS5546608A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830383A (en) * 2011-06-16 2012-12-19 中国科学院空间科学与应用研究中心 Atmospheric electric field calibration system with high precision and wide range

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830383A (en) * 2011-06-16 2012-12-19 中国科学院空间科学与应用研究中心 Atmospheric electric field calibration system with high precision and wide range

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