GB1321876A - Optical tracking system - Google Patents

Optical tracking system

Info

Publication number
GB1321876A
GB1321876A GB5328470A GB5328470A GB1321876A GB 1321876 A GB1321876 A GB 1321876A GB 5328470 A GB5328470 A GB 5328470A GB 5328470 A GB5328470 A GB 5328470A GB 1321876 A GB1321876 A GB 1321876A
Authority
GB
United Kingdom
Prior art keywords
correlation
correlators
signal
receiving
directly
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.)
Expired
Application number
GB5328470A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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
Priority claimed from FR80381A external-priority patent/FR1504656A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB1321876A publication Critical patent/GB1321876A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1928—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals
    • G06G7/1935—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals by converting at least one the input signals into a two level signal, e.g. polarity correlators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G1/00—Sighting devices
    • F41G1/54—Devices for testing or checking ; Tools for adjustment of sights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G7/00—Direction control systems for self-propelled missiles
    • F41G7/20—Direction control systems for self-propelled missiles based on continuous observation of target position
    • F41G7/22—Homing guidance systems
    • F41G7/2226—Homing guidance systems comparing the observed data with stored target data, e.g. target configuration data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G7/00—Direction control systems for self-propelled missiles
    • F41G7/20—Direction control systems for self-propelled missiles based on continuous observation of target position
    • F41G7/22—Homing guidance systems
    • F41G7/2253—Passive homing systems, i.e. comprising a receiver and do not requiring an active illumination of the target
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G7/00—Direction control systems for self-propelled missiles
    • F41G7/20—Direction control systems for self-propelled missiles based on continuous observation of target position
    • F41G7/22—Homing guidance systems
    • F41G7/2273—Homing guidance systems characterised by the type of waves
    • F41G7/2293—Homing guidance systems characterised by the type of waves using electromagnetic waves other than radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
    • G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
    • G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782—Systems for determining direction or deviation from predetermined direction
    • G01S3/785—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G01S3/786—Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
    • G01S3/7864—T.V. type tracking systems
    • G01S3/7865—T.V. type tracking systems using correlation of the live video image with a stored image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1928—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Electromagnetism (AREA)
  • Software Systems (AREA)
  • Multimedia (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optics & Photonics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Optical Communication System (AREA)

Abstract

1321876 Optical tracking COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT 9 Nov 1970 [12 Nov 1969] 53284/70 Addition to 1169640 Heading H4D In the optical tracking system of Specification 1,169,640 the use of a single correlation means renders the system susceptible to errors due to variations in the width and amplitude of the correlation peak and to deformations in the flank of the correlation curve. To overcome this a bank C of (2n + 1) correlators, Fig. 1, is used, correlator Co receiving the most recently stored or reference quantized video signal So(t) and the instantaneous signal S(t) directly, correlators C 1 ... C n receiving the instantaneous signal S(t) directly but the reference signal So(t) via a respective number 1 ... n of delays R 1 ... R n of period T H , where T H is the time quantam of the sampling means 23 such that the reference signal has a delay jT H for the correlator Cj, and correlators C -1 ... C -n receiving the reference signal directly and the instantaneous signal delayed as above. The composite correlation curve is thus as shown in Fig. 2 and a comparator CP determines the degree of correlation between So(t) and S(t) from the correlation which gives the greatest output.
GB5328470A 1966-10-18 1970-11-09 Optical tracking system Expired GB1321876A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR80381A FR1504656A (en) 1966-10-18 1966-10-18 Direct vision optical tracking system using electronic correlation and automatic servoing
FR6938682A FR2073232A6 (en) 1966-10-18 1969-11-12

Publications (1)

Publication Number Publication Date
GB1321876A true GB1321876A (en) 1973-07-04

Family

ID=26173717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5328470A Expired GB1321876A (en) 1966-10-18 1970-11-09 Optical tracking system

Country Status (3)

Country Link
FR (1) FR2073232A6 (en)
GB (1) GB1321876A (en)
NL (1) NL168621C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2813913A1 (en) * 1978-03-31 1979-10-18 Siemens Ag ARRANGEMENT FOR MEASURING THE DISTANCE OR SPEED OF AN OBJECT
GB2293713B (en) * 1994-09-30 1998-12-23 British Aerospace Digital image processing apparatus

Also Published As

Publication number Publication date
DE2053462A1 (en) 1971-05-19
NL168621C (en) 1982-04-16
DE2053462B2 (en) 1976-05-06
NL168621B (en) 1981-11-16
FR2073232A6 (en) 1971-10-01
NL7015857A (en) 1971-05-14

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee