JPS54103368A - Coordinate converter - Google Patents

Coordinate converter

Info

Publication number
JPS54103368A
JPS54103368A JP1022278A JP1022278A JPS54103368A JP S54103368 A JPS54103368 A JP S54103368A JP 1022278 A JP1022278 A JP 1022278A JP 1022278 A JP1022278 A JP 1022278A JP S54103368 A JPS54103368 A JP S54103368A
Authority
JP
Japan
Prior art keywords
signals
converted
θaz
θel
voltages
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
JP1022278A
Other languages
Japanese (ja)
Inventor
Eishiro Kawamura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1022278A priority Critical patent/JPS54103368A/en
Publication of JPS54103368A publication Critical patent/JPS54103368A/en
Pending legal-status Critical Current

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Transform (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE: To make coordinate conversion of tracking error signals, etc. of four- focusing-reflecting mirror system simply and surely by generating sine and cosine AC signals corresponding to the rotating angles of a revolving shaft, converting the same to sine and cosine DC signals and making their multiplication by the converted coordinates.
CONSTITUTION: The azimuth, elevation rotating angles θAZ, θEL of an antenna device 1 are detected with a synchro transmitter 15 and a synchro differential transformer 16, then the AC signals whose amplitudes are proportional to Sin(θAZ+ θEL), Cos(θAZ+θEL) are generated from a synchro control transformer 17. These signals are converted to DC voltages by demodulating circuits 18, 19. The DC voltages are then applied to multipliers 20 thru 23 to which the tracking angle error signals Ex, Ey of the converted signals are applied, after which said voltages are processed in an adder 25 and a subtrater 24, by which the tracking error signals EAZ, EEL which have been converted to the azimuth-elevation coordinates based on the formula (1) are calculated. Thereby the need for servo mechanism, slip rings, etc. is eliminated.
COPYRIGHT: (C)1979,JPO&Japio
JP1022278A 1978-01-31 1978-01-31 Coordinate converter Pending JPS54103368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1022278A JPS54103368A (en) 1978-01-31 1978-01-31 Coordinate converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1022278A JPS54103368A (en) 1978-01-31 1978-01-31 Coordinate converter

Publications (1)

Publication Number Publication Date
JPS54103368A true JPS54103368A (en) 1979-08-14

Family

ID=11744241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1022278A Pending JPS54103368A (en) 1978-01-31 1978-01-31 Coordinate converter

Country Status (1)

Country Link
JP (1) JPS54103368A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108489396A (en) * 2018-05-07 2018-09-04 北京环境特性研究所 A kind of two dimension turn top accuracy checking method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5130757A (en) * 1974-09-09 1976-03-16 Suwa Seikosha Kk
JPS5138894A (en) * 1974-09-28 1976-03-31 Kokusai Denshin Denwa Co Ltd SHIKOHOKOSEIGYOSOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5130757A (en) * 1974-09-09 1976-03-16 Suwa Seikosha Kk
JPS5138894A (en) * 1974-09-28 1976-03-31 Kokusai Denshin Denwa Co Ltd SHIKOHOKOSEIGYOSOCHI

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108489396A (en) * 2018-05-07 2018-09-04 北京环境特性研究所 A kind of two dimension turn top accuracy checking method

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