JPS5749877A - Distance measuring device - Google Patents

Distance measuring device

Info

Publication number
JPS5749877A
JPS5749877A JP12487480A JP12487480A JPS5749877A JP S5749877 A JPS5749877 A JP S5749877A JP 12487480 A JP12487480 A JP 12487480A JP 12487480 A JP12487480 A JP 12487480A JP S5749877 A JPS5749877 A JP S5749877A
Authority
JP
Japan
Prior art keywords
pulse
transponder
interrogator
antenna
time
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
JP12487480A
Other languages
Japanese (ja)
Inventor
Osamu Okamoto
Tatsuyoshi Koshio
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 JP12487480A priority Critical patent/JPS5749877A/en
Priority to US06/262,860 priority patent/US4455556A/en
Priority to EP81302212A priority patent/EP0040541B1/en
Priority to DE8181302212T priority patent/DE3163473D1/en
Publication of JPS5749877A publication Critical patent/JPS5749877A/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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • G01S13/785—Distance Measuring Equipment [DME] systems

Landscapes

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

Abstract

PURPOSE:To measure a distance between an interrogator and a transponder, by a method wherein a pair of question pulses having a particular shape are set from the interrogator, the transponder detects said particular pulses which are returned by a given delay. CONSTITUTION:An interrogator (aircraft) outputs a Gaussian waveform pulse, having a particular shape, whose forward edge is shown in formula (where E: an integer, T: a time, and F= 0.5), from a pulse generating part 1 after controlling it by means of a time controlling part 2, a carrier is modulated in a rectineal amplitude manner by means of a transmitting pulse modulating part 3, and is radiated from an antenna 6 via a power amplifying part 4, and a diplexer 15. At the transponder side, an electric wave is detected by a detector 19 via an antenna 16, a diplexer 15, a preselector 15, and an intermediate frequency amplifier 18 to fetch an envelope, A delay comparator 20 decides a timing of a first pulse of a reception wave, the controlling part 2 generates re-transmitting pulse by a given time delay, and is radiated from the antenna 16 after processing it by means of a transmitting part 21 like the processing which is conducted at the aircraft side. At the aircraft side also, a processing like that done at the transponder side is performed by a reception part 7. This measures a distance between the two from a difference in time between the pulses.
JP12487480A 1980-05-19 1980-09-09 Distance measuring device Pending JPS5749877A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12487480A JPS5749877A (en) 1980-09-09 1980-09-09 Distance measuring device
US06/262,860 US4455556A (en) 1980-05-19 1981-05-12 Distance measuring equipment
EP81302212A EP0040541B1 (en) 1980-05-19 1981-05-19 Distance measuring equipment
DE8181302212T DE3163473D1 (en) 1980-05-19 1981-05-19 Distance measuring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12487480A JPS5749877A (en) 1980-09-09 1980-09-09 Distance measuring device

Publications (1)

Publication Number Publication Date
JPS5749877A true JPS5749877A (en) 1982-03-24

Family

ID=14896227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12487480A Pending JPS5749877A (en) 1980-05-19 1980-09-09 Distance measuring device

Country Status (1)

Country Link
JP (1) JPS5749877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1956387A1 (en) * 2007-02-02 2008-08-13 Kabushiki Kaisha Toshiba Pulse signal transmitting apparatus, method of adjusting waveform of the same, and DME ground station apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018018A (en) * 1983-07-12 1985-01-30 Seiko Epson Corp Cmos gate circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6018018A (en) * 1983-07-12 1985-01-30 Seiko Epson Corp Cmos gate circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1956387A1 (en) * 2007-02-02 2008-08-13 Kabushiki Kaisha Toshiba Pulse signal transmitting apparatus, method of adjusting waveform of the same, and DME ground station apparatus
US7636058B2 (en) 2007-02-02 2009-12-22 Kabushiki Kaisha Toshiba Pulse signal transmitting apparatus, method of adjusting waveform of the same, and DME ground station apparatus

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