FR2335098A1 - Digital phase locked loop for navigation systems - is designed specially for microwave systems such as TACAN and includes a/d converter and sequence register - Google Patents

Digital phase locked loop for navigation systems - is designed specially for microwave systems such as TACAN and includes a/d converter and sequence register

Info

Publication number
FR2335098A1
FR2335098A1 FR7537609A FR7537609A FR2335098A1 FR 2335098 A1 FR2335098 A1 FR 2335098A1 FR 7537609 A FR7537609 A FR 7537609A FR 7537609 A FR7537609 A FR 7537609A FR 2335098 A1 FR2335098 A1 FR 2335098A1
Authority
FR
France
Prior art keywords
pulse
sequence register
input signal
locked loop
systems
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.)
Withdrawn
Application number
FR7537609A
Other languages
French (fr)
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.)
General Dynamics Corp
Original Assignee
General Dynamics 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 General Dynamics Corp filed Critical General Dynamics Corp
Priority to FR7537609A priority Critical patent/FR2335098A1/en
Publication of FR2335098A1 publication Critical patent/FR2335098A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S1/00Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08Systems for determining direction or position line
    • G01S1/44Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

The phase-locked loop generates clock pulses synchronised with the passage through zero of an input data signal, e.G. for use in navigation systems. An A/D convertor continuously converts the input signal into a digital signal which is checked and stored by a memory when it receives a clock pulse. When a given digital signal count is reached an instruction sequence register reads out the count in synchronism with the zero passage of the input signal and generates a carry pulse at the end of the count. The carry pulse is fed to a pulse generator to produce a synchronous output clock pulse which leads or lags the zero passage of the input signal by the counting time of the instruction sequence register. A circuit feeds the output clock pulse to the memory which ensures this pulse and a second output clock pulse are synchronized with the zero passage of the input signal.
FR7537609A 1975-12-09 1975-12-09 Digital phase locked loop for navigation systems - is designed specially for microwave systems such as TACAN and includes a/d converter and sequence register Withdrawn FR2335098A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7537609A FR2335098A1 (en) 1975-12-09 1975-12-09 Digital phase locked loop for navigation systems - is designed specially for microwave systems such as TACAN and includes a/d converter and sequence register

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7537609A FR2335098A1 (en) 1975-12-09 1975-12-09 Digital phase locked loop for navigation systems - is designed specially for microwave systems such as TACAN and includes a/d converter and sequence register

Publications (1)

Publication Number Publication Date
FR2335098A1 true FR2335098A1 (en) 1977-07-08

Family

ID=9163488

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537609A Withdrawn FR2335098A1 (en) 1975-12-09 1975-12-09 Digital phase locked loop for navigation systems - is designed specially for microwave systems such as TACAN and includes a/d converter and sequence register

Country Status (1)

Country Link
FR (1) FR2335098A1 (en)

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Legal Events

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