JPS57136174A - Optical finding trace system - Google Patents

Optical finding trace system

Info

Publication number
JPS57136174A
JPS57136174A JP2358681A JP2358681A JPS57136174A JP S57136174 A JPS57136174 A JP S57136174A JP 2358681 A JP2358681 A JP 2358681A JP 2358681 A JP2358681 A JP 2358681A JP S57136174 A JPS57136174 A JP S57136174A
Authority
JP
Japan
Prior art keywords
target
distance
units
signal
light
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
JP2358681A
Other languages
Japanese (ja)
Inventor
Kouji Shinohara
Takeshi Akamatsu
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP2358681A priority Critical patent/JPS57136174A/en
Publication of JPS57136174A publication Critical patent/JPS57136174A/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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

PURPOSE:To enable to find the distance and to enable a target to be traced in a three dimentional manner, by a method wherein the target is simultaneously observed by at least 2 systems hetrodine type photo detectors at a known distance. CONSTITUTION:An exte nal light (a) enters a semiclear mirror 2 after passing through a reception microscope 1. After the external light (a), coming out of the microscope 1, passes through the semiclear mirror 2, the light (a), overlapped with luminescnece b of a partial oscillating laser 3, enters a photo detector 4. This causes outputting of an electric signal, having a frequency equal to a difference in the number of vibrations between the two lights a and b, from the photo detetor 4, or outputting of a microwave signal. Thereby, the signal is inputted to a BPF5 to bring it into a narrow band, and this improves a SN, and after appropriately amplified (6), it is inputted to a detecting circuit 7 to con- vert it into a direct current or a low-frequency signal. At least two units so formed are placed at a certain distance, and the two units simultaneously observe a target to detect the direction. Based on the direction in which the target is detected by the two units and is observed from the side of each unit, a distance to the target is found.
JP2358681A 1981-02-18 1981-02-18 Optical finding trace system Pending JPS57136174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2358681A JPS57136174A (en) 1981-02-18 1981-02-18 Optical finding trace system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2358681A JPS57136174A (en) 1981-02-18 1981-02-18 Optical finding trace system

Publications (1)

Publication Number Publication Date
JPS57136174A true JPS57136174A (en) 1982-08-23

Family

ID=12114681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2358681A Pending JPS57136174A (en) 1981-02-18 1981-02-18 Optical finding trace system

Country Status (1)

Country Link
JP (1) JPS57136174A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109633668A (en) * 2018-12-26 2019-04-16 中国科学院长春光学精密机械与物理研究所 Laser ranging system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109633668A (en) * 2018-12-26 2019-04-16 中国科学院长春光学精密机械与物理研究所 Laser ranging system

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