EP0127528A1 - Ground-to-ground fire control system - Google Patents

Ground-to-ground fire control system Download PDF

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Publication number
EP0127528A1
EP0127528A1 EP84401029A EP84401029A EP0127528A1 EP 0127528 A1 EP0127528 A1 EP 0127528A1 EP 84401029 A EP84401029 A EP 84401029A EP 84401029 A EP84401029 A EP 84401029A EP 0127528 A1 EP0127528 A1 EP 0127528A1
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EP
European Patent Office
Prior art keywords
reticle
goal
barrel
lateral
management
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.)
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EP84401029A
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German (de)
French (fr)
Inventor
Thierry Roussel
Jean-Louis Poque
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Thales SA
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Thomson CSF SA
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Publication date
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Publication of EP0127528A1 publication Critical patent/EP0127528A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G3/00—Aiming or laying means
    • F41G3/06—Aiming or laying means with rangefinder

Definitions

  • the invention relates to a system for conducting a ground-to-ground firing of a projectile at a mobile target, and in particular, cannon fire from a tank.
  • the French patent document FR-A-2 440 537 discloses a fire control system which avoids this use of the turret.
  • This system includes a sighting device and a rangefinder to determine the position of the goal and, a computer which receives signals, representing ballistic parameters and the position of the goal, for the calculation of the signals of control of shooting intended for the control mechanisms of barrel orientation.
  • the optical sighting device superimposes the field of observation and a reticle constituted by a grid moved at a uniform speed manually adjustable.
  • the rangefinder makes it possible to determine the distance from the goal which is in the field of observation.
  • the operator pursues by adjusting the speed of movement of the grid equal to that lateral to the goal.
  • the lateral speed of displacement of the goal is then known by the computer as well as the other data necessary for shooting, and this while keeping the turret immobile.
  • An object of the invention is to determine a simple, rapid and precise procedure for orienting the barrel for shooting, taking account of the lateral displacement of the target, this procedure also making it possible to simplify the intervention of the operator.
  • a feature of the invention is to replace the aforementioned manual tracking by operating differently, the reticle being moved at a given time by a known amount relative to the goal and according to the direction of movement thereof, then returning to uniform speed towards its initial position. The operator only has to appreciate the moment when the reticle coincides again with the goal. The measurement of the time elapsed for this operation allows the computer to measure using the ballistic parameters and the distance, the direction of the shot.
  • Another feature of the invention is to advantageously use television equipment present on the tank to constitute the aiming device and simplify the equipment.
  • a ground-to-ground firing control system for a barrel which can be oriented in elevation and in bearing, comprising a sighting device for observing the field of observation and for viewing a reticle whose initial position corresponds in the direction of the aiming of the cannon and which is made to coincide with the aim to be reached, a telemetry device for the measurement of the distance separating the aim of the cannon, additional sensor devices for the measurement of various ballistic parameters, means of manual control to produce a movement of the reticle which takes account of lateral movement of the goal, and management and calculation means receiving the distance data and the ballistic parameters and also taking account of the movement of the reticle to calculate the aiming signals of firing of the cannon in the direction of the future goal.
  • the manual control means are connected to the management and calculation means to produce, by manual action, binary state change information which triggers an instantaneous lateral displacement of the reticle in the same direction as that of the goal, of determined amplitude, immediately followed by the return of the latter to its initial position with a determined constant speed, and to produce then by cessation of the manual action as soon as the reticle coincides again with the goal, the return to the initial state of the binary information and the stopping of the reticle, the calculation means measuring the duration of this manual action and developing, from the duration and distance parameters as well as that of the flight time established as a function of the distance and ballistic parameters, the firing pointing signals in elevation and in bearing.
  • a firing device 1 the barrel 2 of which is oriented by means of orientation in bearing which make the turret 3 rotate about a vertical axis Y, and means of orientation in elevation which tilt the barrel of the barrel by rotation around a horizontal axis X.
  • the orientation of the barrel is represented by the pointing direction DP corresponding to the axis of the barrel.
  • the fire control system comprises an aiming device 4 preferably comprising a video camera 5 delimiting a field of observation and a display monitor 6.
  • the camera is also oriented in the direction of aiming DP.
  • This sighting device also includes a gene symbol erector which can be included in the camera, in order to visualize a reticle of shooting R on the screen of the monitor 6.
  • a telemetry device 8 preferably an optical laser rangefinder, is also oriented according to the pointing direction DP for measure the distance D separating the goal B to be reached from the shooting system.
  • the camera of the aiming device 4 and the rangefinder 8 can be mounted integral with the barrel 2.
  • Various auxiliary sensor devices 9 provide the firing system with signals representing different ballistic parameters (wind direction and speed, air temperature, slope of the tank, barrel arch ).
  • the system is managed by management and calculation means 10, constituting a computer assembly, which groups around a microprocessor 11, random access memories 13, read-only memories 14, and interface circuits 15 and 16. These different elements are all connected to the microprocessor 11 by an address bus 17, a data bus 18, and a control bus not shown.
  • the interface 15 receives the signals from the sensors 9 and is connected to the telemetry device 8.
  • manual control means 20 comprising two switches 20D and 20G are also connected to the computer 10 through the interface 15.
  • the computer is connected via the second interface circuit 16 to the aiming device 4 to transmit reticle positioning signals and, finally, the ES and EG deviation signals for aiming shooting in elevation and in bearing.
  • Fig.3A shows the target B considered located in the field observed by the sighting device 4 and the reticle R which corresponds to the axis of the barrel.
  • the camera 5 delivers to the monitor 6 a composite video signal corresponding to the simultaneous representation of the image of the observed field and of the reticle R.
  • a preliminary phase consists in aligning the barrel on the goal.
  • An operator acts accordingly on commands at his disposal to control the means of orientation in elevation and in bearing and to bring the reticle R which symbolizes the direction of the axis of the barrel to coincide with the goal B and therefore point this direction d DP axis on purpose.
  • FIG. 3B We then obtain the configuration of FIG. 3B.
  • the firing sequence is triggered by the operator, who controls one of the two switches of the device 20.
  • These simple switches are advantageously produced using push buttons whose rest position can correspond to an open circuit and the working position, by operator support, at circuit closure.
  • Binary state change information is thus produced which is transmitted to the computer 10.
  • One of the buttons 20D corresponds to the command to be carried out if the goal moves laterally to the right and the other 20G in the opposite case of a shift to the left. The observation of this displacement is carried out in the considered case of the sighting device on the screen of the monitor 6.
  • We call t o the instant when the operator, having just completed the abovementioned alignment, presses on the appropriate button 20 .
  • the programming of the microprocessor is such that it results from positioning data of the reticle which produces the instantaneous horizontal displacement of the reticle in the same direction as the lateral movement of the goal with a predetermined amplitude E (FIG. 3C).
  • the reticle R is animated with a movement back to its initial position, this movement taking place at constant speed at a predetermined value VR of sign opposite to the lateral speed VB of the goal. This brings about a phase of approximation of the reticle R towards the goal (Fig. 3D).
  • the pressed position of one of the two switches 20D or 20G also triggers via the computer the telemetry device 8 which supplies in return to the microprocessor 11, via the interface 15, the distance D away from the goal.
  • the angle ⁇ 1 of depointing in corresponding deposit can be easily determined by the computer.
  • the difference E of the reticle corresponds to a determined and known angle a E and the speed VR of the reticle being itself known, we obtain ⁇ 1 by the difference between a E and the angular value ⁇ R corresponding to the lateral path VR.Tm of the reticle.
  • ⁇ 1 is linked to the unknown lateral speed of goal B by the relation D being the distance from the goal given by the telemetry.
  • the microprocessor 11 performs the measurement of Tm then the simple calculations giving ⁇ R , then a 1 .
  • the data tg a can be read from a table stored in read-only memories 14 grogrammed.
  • the ROMs 14 contain for each type of ammunition a correspondence table associating with each of the values of a series of distances a flight time corresponding to the ammunition.
  • the flight time is essentially a function of the type of ammunition and the distance D, it is given by the stored tables.
  • the shooting system therefore makes it possible to determine the direction of pointing in a field without having to calculate the lateral speed VB of the goal.
  • the corresponding EG signal results in a LG deviation on the screen (Fig.3F).
  • the system also calculates the rise in the barrel which ensures the flight time TV at the distance D presented, that is to say the signal ES to which the difference LS corresponds on the screen.
  • the position of the canon axis on the screen corresponds to that of the initial reticle R and is then symbolized by a crosshair in broken lines in Figs.3D to 3G.
  • the diagram Fig. 4 recalls as a function of time the various actions of the operator, the events they cause, and the correspondence with the diagrams 3A to 3G.
  • the computer 10 is not described in detail, but a preferred implementation of the fire control system according to the invention provides that the microprocessor 11 is not used to calculate the ballistic parameters of the fire. It searches in tables, frozen in all of the programmed read-only memories 14, for the different values meeting the firing conditions according to the munition chosen.
  • the microprocessor however performs the calculations which have been described previously and various additional calculations such as appr linear ximations.
  • the interface 15 includes analog-digital converters to supply the microprocessor with the various data in digital form.
  • the interface 16 includes digital-analog converters followed by amplifiers 25 and 26 in order to deliver the reticle signals.
  • the program of the calculation means 10 provides for the cancellation of the measurement by closing consecutive to an opening of one of the two push switches 20D, 20G, the measurement of the time Tm being validated only after '' a certain time, for example after approximately 0.5 seconds.
  • the calculator 10 determines the angle of increase in shooting ⁇ , it calculates the correction to be made to the angle a 2 of aiming compensating only the lateral speed VB of the goal.
  • the microprocessor It can be programmed differently. It can command the triggering of the measurement of the distance D by means of the rangefinder 8 as soon as the goal is taken over. In this case, this can allow the computer 10 to adjust the speed of movement VR of the reticle R as a function of the distance D measured by the laser rangefinder 8.
  • the means used to develop the reticle R being preferably incorporated into the camera 5, this makes it possible to use several display monitors 6 on board the same combat tank, one for the shooter and one for the tank commander for example .
  • the firing system according to the invention without departing from the scope thereof. It is for example conceivable to replace the camera 5 used in the sighting device 4 by a optical sighting system, the image of the reticle R being collimated and superimposed on the image of the field of observation.
  • the camera 5 can also be simply replaced by a device with a photodetector array, for example with a charge transfer circuit, in front of which a field scan is produced; such a device can correspond to a FLIR (from the English terminology "Forward Looking Infra Red").

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Paper (AREA)
  • Polarising Elements (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)

Abstract

The system makes it possible, by a simple and rapid procedure, to determine the aiming angles (ES, EG), without moving the barrel or calculating the lateral speed of the target. When the firing cross-hairs (R) representing the axis (DP) of the barrel have been aligned with the target (B), the operator triggers a measuring sequence by pressing a button (20D or 20G) corresponding to the right or left direction of the lateral movement of the target. The cross-hairs observed on the screen of a monitor (6) are then controlled by the programming of a management and computation unit (10) which generates an instantaneous deviation in relation to the observed target and an automatic return at constant speed. The operator releases the button when there is coincidence. The duration of this sequence, that of the flight time of the projectile, and the angular aiming angle covered in terms of relative bearing during this sequence make it possible to calculate the aiming value in terms of relative bearing for firing, the elevation being calculated as a function of the distance, ballistic data and type of ammunition. <IMAGE>

Description

L'invention concerne un système de conduite de tir sol-sol d'un projectile sur un but mobile, et en particulier, le tir au canon à partir d'un char d'assaut.The invention relates to a system for conducting a ground-to-ground firing of a projectile at a mobile target, and in particular, cannon fire from a tank.

On connaît différents systèmes de conduite de tir dans chacun desquels existe un dispositif de visée grâce auquel un opérateur surveille un champ d'observation avec un réticule de tir symbolisant l'axe du canon. Le positionnement du canon pour le tir exige que la direction, la distance et la vitesse latérale de déplacement du but soient connues. L'estimation de cette vitesse latérale est souvent entreprise par l'opérateur qui poursuit le but en mouvement en orientant l'ensemble composé du canon et du dispositif de visée de manière à ce que le but observé à travers le dispositif de visée reste superposé au réticule. Pour effectuer cette poursuite, on change l'orientation du canon en faisant tourner la tourelle en gisement, et en faisant pivoter le canon en site.Different fire control systems are known in each of which there is a sighting device by which an operator monitors a field of observation with a firing reticle symbolizing the axis of the gun. The positioning of the cannon for shooting requires that the direction, distance and lateral speed of movement of the goal be known. The estimation of this lateral speed is often undertaken by the operator who pursues the moving object by orienting the assembly made up of the barrel and the aiming device so that the aim observed through the aiming device remains superimposed on the reticle. To carry out this pursuit, the orientation of the barrel is changed by rotating the turret in a deposit, and by rotating the barrel in elevation.

On connaît par le document de brevet français FR-A-2 440 537 un système de conduite de tir évitant cette utilisation de la tourelle. Ce système comprend un dispositif de visée et un télémètre pour déterminer la position du but et, un calculateur qui reçoit des signaux, représentant des paramètres balistiques et la position du but, pour le calcul les signaux de conduite de tir destinés aux mécanismes de commande d'orientation du canon. Le dispositif de visée optique représente en superposition le champ d'observation et un réticule constitué par une grille déplacée à une vitesse uniforme réglable manuellement. Le télémètre permet de déterminer la distance du but qui se trouve dans le champ d'observation. L'opérateur effectue la poursuite en ajustant la vitesse de déplacement de la grille égale à celle latérale du but. La vitesse latérale de déplacement du but est alors connue par le calculateur ainsi que les autres données nécessaires au tir, et ceci tout en gardant la tourelle immobile.The French patent document FR-A-2 440 537 discloses a fire control system which avoids this use of the turret. This system includes a sighting device and a rangefinder to determine the position of the goal and, a computer which receives signals, representing ballistic parameters and the position of the goal, for the calculation of the signals of control of shooting intended for the control mechanisms of barrel orientation. The optical sighting device superimposes the field of observation and a reticle constituted by a grid moved at a uniform speed manually adjustable. The rangefinder makes it possible to determine the distance from the goal which is in the field of observation. The operator pursues by adjusting the speed of movement of the grid equal to that lateral to the goal. The lateral speed of displacement of the goal is then known by the computer as well as the other data necessary for shooting, and this while keeping the turret immobile.

Un but de l'invention est de déterminer une procédure simple, rapide et précise d'orientation du canon pour le tir en tenant compte du déplacement latéral de la cible, cette procédure permettant également de simplifier l'intervention de l'opérateur.An object of the invention is to determine a simple, rapid and precise procedure for orienting the barrel for shooting, taking account of the lateral displacement of the target, this procedure also making it possible to simplify the intervention of the operator.

Une particularité de l'invention consiste à remplacer la poursuite manuelle précitée en opérant différemment, le réticule étant déplacé à un moment donné d'une quantité connue par rapport au but et selon le sens de déplacement de celui-ci, puis revenant à vitesse uniforme vers sa position initiale. L'opérateur n'a qu'à apprécier l'instant où le réticule coïncide à nouveau avec le but. La mesure du temps écoulé pour cette opération permet au calculateur de mesurer à l'aide des paramètres balistiques et de la distance, la direction du tir.A feature of the invention is to replace the aforementioned manual tracking by operating differently, the reticle being moved at a given time by a known amount relative to the goal and according to the direction of movement thereof, then returning to uniform speed towards its initial position. The operator only has to appreciate the moment when the reticle coincides again with the goal. The measurement of the time elapsed for this operation allows the computer to measure using the ballistic parameters and the distance, the direction of the shot.

Une autre particularité de l'invention est d'utiliser avantageusement un équipement de télévision présent sur le char pour constituer le dispositif de visée et simplifier l'équipement.Another feature of the invention is to advantageously use television equipment present on the tank to constitute the aiming device and simplify the equipment.

Selon l'invention on propose de réaliser un système de conduite de tir sol-sol pour un canon orientable en site et en gisement, comportant un dispositif de visée pour observer le champ d'observation et pour y visualiser un réticule dont la position initiale correspond à la direction du pointage du canon et que l'on fait coïncider avec le but à atteindre, un dispositif de télémétrie pour la mesure de la distance séparant le but du canon, des dispositifs capteurs annexes pour la mesure de paramètres balistiques divers, des moyens de commande manuelle pour produire un déplacement du réticule qui tient compte de mouvement latéral du but, et des moyens de gestion et de calcul recevant les données de distance et les paramètres balistiques et tenant compte également du déplacement du réticule pour calculer les signaux de pointage de tir du canon en direction du but futur. Les moyens de commande manuelle sont connectés aux moyens de gestion et de calcul pour produire, par action manuelle, une information binaire de changement d'état qui déclenche un déplacement latéral instantané du réticule de même sens que celui du but, d'amplitude déterminée, aussitôt suivi du retour de celui-ci vers sa position initiale avec une vitesse constante déterminée, et pour produire ensuite par cessation de l'action manuelle dès que le réticule coïncide à nouveau avec le but, le retour à l'état initial de l'information binaire et l'arrêt du réticule, les moyens de calcul mesurant la durée de cette action manuelle et élaborant, à partir des paramètres de durée et de distance ainsi que de celui du temps de vol établi en fonction de la distance et des paramètres balistiques, les signaux de pointage de tir en site et en gisement.According to the invention, it is proposed to produce a ground-to-ground firing control system for a barrel which can be oriented in elevation and in bearing, comprising a sighting device for observing the field of observation and for viewing a reticle whose initial position corresponds in the direction of the aiming of the cannon and which is made to coincide with the aim to be reached, a telemetry device for the measurement of the distance separating the aim of the cannon, additional sensor devices for the measurement of various ballistic parameters, means of manual control to produce a movement of the reticle which takes account of lateral movement of the goal, and management and calculation means receiving the distance data and the ballistic parameters and also taking account of the movement of the reticle to calculate the aiming signals of firing of the cannon in the direction of the future goal. The manual control means are connected to the management and calculation means to produce, by manual action, binary state change information which triggers an instantaneous lateral displacement of the reticle in the same direction as that of the goal, of determined amplitude, immediately followed by the return of the latter to its initial position with a determined constant speed, and to produce then by cessation of the manual action as soon as the reticle coincides again with the goal, the return to the initial state of the binary information and the stopping of the reticle, the calculation means measuring the duration of this manual action and developing, from the duration and distance parameters as well as that of the flight time established as a function of the distance and ballistic parameters, the firing pointing signals in elevation and in bearing.

L'invention, ses particularités et avantages seront mieux compris à la lecture de la description qui suit, donnée à titre d'exemple, et illustrée des figures suivantes :

  • - Fig. 1, un schéma général du système de conduite de tir selon l'invention et du dispositif de tir pour lequel il est prévu ;
  • - Fig. 2, une représentation schématique des principales phases de la conduite de tir avec le système selon l'invention ;
  • - Figs. 3A à 3G, plusieurs schémas représentant la visualisation des différentes phases de la conduite de tir selon l'invention ;
  • - Fig.4, un organigramme de la conduite de tir conforme à l'invention.
The invention, its features and advantages will be better understood on reading the description which follows, given by way of example, and illustrated by the following figures:
  • - Fig. 1, a general diagram of the firing control system according to the invention and of the firing device for which it is intended;
  • - Fig. 2, a schematic representation of the main phases of the fire control with the system according to the invention;
  • - Figs. 3A to 3G, several diagrams representing the display of the different phases of the fire control according to the invention;
  • - Fig.4, a flow chart of the fire control according to the invention.

On distingue sur la Fig. 1 un dispositif de tir 1 dont le canon 2 est orienté par des moyens d'orientation en gisement qui font tourner la tourelle 3 autour d'un axe vertical Y, et des moyens d'orientation en site qui inclinent le fût du canon par rotation autour d'un axe horizontal X. L'orientation du canon est représentée par la direction de pointage DP correspondant à l'axe du canon.We can see in Fig. 1 a firing device 1, the barrel 2 of which is oriented by means of orientation in bearing which make the turret 3 rotate about a vertical axis Y, and means of orientation in elevation which tilt the barrel of the barrel by rotation around a horizontal axis X. The orientation of the barrel is represented by the pointing direction DP corresponding to the axis of the barrel.

Le système de conduite de tir comporte un dispositif de visée 4 comprenant de manière préférée une caméra de prise de vues vidéo 5 délimitant un champ d'observation et un moniteur de visualisation 6. La caméra est également orientée selon la direction de pointage DP. Ce dispositif de visée comprend également un générateur de symboles qui peut être inclus dans la caméra, pour visualiser un réticule de tir R sur l'écran du moniteur 6. Un dispositif de télémétrie 8, de préférence un télémètre optique à laser, est orienté également selon la direction de pointage DP pour mesurer la distance D séparant le but B à atteindre du système de tir. La caméra du dispositif de visée 4 et le télémétre 8 peuvent être montés solidaires du canon 2. Divers dispositifs capteurs annexes 9 fournissent au système de tir des signaux représentant différents paramètres balistiques (direction et vitesse du vent, température de l'air, dévers du char, arcure du canon ...). Le système est dirigé par des moyens de gestion et de calcul 10, constituant un ensemble calculateur, qui groupe autour d'un microprocesseur 11, des mémoires vives 13, des mémoires mortes 14, et des circuits d'interfaces 15 et 16. Ces différents éléments sont tous reliés au microprocesseur 11 par un bus d'adresse 17, un bus de données 18, et un bus de commande non figuré. L'interface 15 reçoit les signaux des capteurs 9 et est connectée au dispositif de télémétrie 8.The fire control system comprises an aiming device 4 preferably comprising a video camera 5 delimiting a field of observation and a display monitor 6. The camera is also oriented in the direction of aiming DP. This sighting device also includes a gene symbol erector which can be included in the camera, in order to visualize a reticle of shooting R on the screen of the monitor 6. A telemetry device 8, preferably an optical laser rangefinder, is also oriented according to the pointing direction DP for measure the distance D separating the goal B to be reached from the shooting system. The camera of the aiming device 4 and the rangefinder 8 can be mounted integral with the barrel 2. Various auxiliary sensor devices 9 provide the firing system with signals representing different ballistic parameters (wind direction and speed, air temperature, slope of the tank, barrel arch ...). The system is managed by management and calculation means 10, constituting a computer assembly, which groups around a microprocessor 11, random access memories 13, read-only memories 14, and interface circuits 15 and 16. These different elements are all connected to the microprocessor 11 by an address bus 17, a data bus 18, and a control bus not shown. The interface 15 receives the signals from the sensors 9 and is connected to the telemetry device 8.

Selon l'invention, des moyens de commande manuelle 20 comportant deux interrupteurs 20D et 20G sont également connectés au calculateur 10 à travers l'interface 15. Le calculateur est relié par l'intermédiaire du deuxième circuit d'interface 16 au dispositif de visée 4 pour transmettre des signaux de positionnement du réticule et, finalement, les signaux d'écart ES et EG pour le pointage de tir en site et en gisement.According to the invention, manual control means 20 comprising two switches 20D and 20G are also connected to the computer 10 through the interface 15. The computer is connected via the second interface circuit 16 to the aiming device 4 to transmit reticle positioning signals and, finally, the ES and EG deviation signals for aiming shooting in elevation and in bearing.

Le fonctionnement du système va être décrit à l'aide des Figs.2 et des schéma 3A à 3G, ainsi que les interventions de l'opérateur pour effectuer une séquence de tir.The operation of the system will be described using Figs.2 and diagrams 3A to 3G, as well as the operator's interventions to carry out a firing sequence.

La Fig.3A montre le but B considéré situé dans le champ observé par le dispositif de visée 4 et le réticule R qui correspond à l'axe du canon. Dans la réalisation considérée la caméra 5 délivre au moniteur 6 un signal vidéo composite correspondant à la représentation simultanée de l'image du champ observé et du réticule R.Fig.3A shows the target B considered located in the field observed by the sighting device 4 and the reticle R which corresponds to the axis of the barrel. In the embodiment considered, the camera 5 delivers to the monitor 6 a composite video signal corresponding to the simultaneous representation of the image of the observed field and of the reticle R.

Une phase préliminaire consiste à aligner le canon sur le but. Un opérateur agit en conséquence sur des commandes à sa disposition pour commander les moyens d'orientation en site et en gisement et amener le réticule R qui symbolise la direction de l'axe du canon à coincider avec le but B et donc pointer cette direction d'axe DP sur le but. On obtient alors la configuration de la Fig. 3B.A preliminary phase consists in aligning the barrel on the goal. An operator acts accordingly on commands at his disposal to control the means of orientation in elevation and in bearing and to bring the reticle R which symbolizes the direction of the axis of the barrel to coincide with the goal B and therefore point this direction d DP axis on purpose. We then obtain the configuration of FIG. 3B.

A ce stade la séquence de tir est déclenchée par l'opérateur qui commande l'un des deux interrupteurs du dispositif 20. Ces interrupteurs simples sont avantageusement réalisés à l'aide de boutons poussoirs dont la position repos peut correspondre à un circuit ouvert et la position travail, par appui de l'opérateur, à une fermeture de circuit. On produit ainsi une information binaire de changement d'état qui est transmise au calculateur 10. L'un des boutons 20D correspond à la commande à effectuer si le but se déplace latéralement vers la droite et l'autre 20G dans le cas contraire d'un déplacement vers la gauche. L'observation de ce déplacement s'effectue dans le cas considéré du dispositif de visée sur l'écran du moniteur 6. On appelle to l'instant où l'opérateur ayant juste achevé l'alignement précité, appuit sur le bouton 20 adéquat. Dès cet instant, la programmation du microprocesseur est telle qu'il en résulte des données de positionnement du réticule qui produisent le déplacement instantané horizontal du réticule dans le même sens que le mouvement latéral du but avec une amplitude E prédéterminée (Fig.3C).At this stage, the firing sequence is triggered by the operator, who controls one of the two switches of the device 20. These simple switches are advantageously produced using push buttons whose rest position can correspond to an open circuit and the working position, by operator support, at circuit closure. Binary state change information is thus produced which is transmitted to the computer 10. One of the buttons 20D corresponds to the command to be carried out if the goal moves laterally to the right and the other 20G in the opposite case of a shift to the left. The observation of this displacement is carried out in the considered case of the sighting device on the screen of the monitor 6. We call t o the instant when the operator, having just completed the abovementioned alignment, presses on the appropriate button 20 . From this instant, the programming of the microprocessor is such that it results from positioning data of the reticle which produces the instantaneous horizontal displacement of the reticle in the same direction as the lateral movement of the goal with a predetermined amplitude E (FIG. 3C).

Aussitôt après, le réticule R est animé d'un mouvement de retour vers sa position initiale, ce mouvement s'effectuant à vitesse constante à une valeur prédéterminée VR de signe opposé à la vitesse latérale VB du but. Il se produit ainsi une phase de rapprochement du réticule R vers le but (Fig. 3D)..Immediately afterwards, the reticle R is animated with a movement back to its initial position, this movement taking place at constant speed at a predetermined value VR of sign opposite to the lateral speed VB of the goal. This brings about a phase of approximation of the reticle R towards the goal (Fig. 3D).

La position appuyée de l'un des deux interrupteur 20D ou 20G déclenche également via le calculateur le dispositif de télémétrie 8 qui fournit en retour au microprocesseur 11, par l'intermédiaire de l'interface 15, la distance D d'éloignement du but.The pressed position of one of the two switches 20D or 20G also triggers via the computer the telemetry device 8 which supplies in return to the microprocessor 11, via the interface 15, the distance D away from the goal.

Lorsque le réticule parvient à nouveau en coïncidence avec le but (Fig.3E), ou sensiblement (étant donné que le déplacement du but fait intervenir, outre la composante latérale VB considérée, une deuxième composante généralement non nulle), l'opérateur relâche aussitôt le bouton 20D (ou 20G) sur lequel il appuyait de manière a rétablir l'état initial sur la liaison correspondante vers le calculateur et indiquer ainsi la fin de cette séquence. Il en résulte un arrêt instantané du réticule R et le calcul pour l'ensemble calculateur des signaux de tir ES et EG. On appelle t1 l'instant de réouverture de l'interrupteur et Tm la durée de la séquence, soit t 1 =t0 + Tm, pendant laquelle le but B est passé de la position B0 à B1 (Fig.2). L'angle α 1 de dépointage en gisement correspondant peut être aisément déterminé par le calculateur. En effet, l'écart E du réticule correspond à un angle déterminé et connu aE et la vitesse VR du réticule étant elle-même connue, on obtient α1 par la différence entre aE et la valeur angulaire αR correspondant au parcours latéral VR.Tm du réticule. Par ailleurs, α1 est lié à la vitesse latérale inconnue du but B par la relation

Figure imgb0001
D étant la distance d'éloignement du but donné par la télémétrie.When the reticle arrives again in coincidence with the goal (Fig.3E), or substantially (since the displacement of the goal involves, in addition to the lateral component VB considered, a second component which is generally not zero), the operator immediately releases the button 20D (or 20G) on which he pressed so as to restore the initial state on the corresponding link to the computer and thus indicate the end of this sequence. This results in an instantaneous stop of the reticle R and the calculation for the computer assembly of the fire signals ES and EG. We call t 1 the instant of reopening of the switch and Tm the duration of the sequence, i.e. t 1 = t 0 + Tm, during which goal B has passed from position B 0 to B 1 (Fig. 2) . The angle α 1 of depointing in corresponding deposit can be easily determined by the computer. Indeed, the difference E of the reticle corresponds to a determined and known angle a E and the speed VR of the reticle being itself known, we obtain α 1 by the difference between a E and the angular value α R corresponding to the lateral path VR.Tm of the reticle. Furthermore, α 1 is linked to the unknown lateral speed of goal B by the relation
Figure imgb0001
 D being the distance from the goal given by the telemetry.

Le microprocesseur 11 effectue la mesure de Tm puis les calculs simples donnant αR, puis a 1. La donnée tg a peut être lue dans une table stockée dans des mémoires mortes 14 grogrammées.The microprocessor 11 performs the measurement of Tm then the simple calculations giving α R , then a 1 . The data tg a can be read from a table stored in read-only memories 14 grogrammed.

Les mémoires mortes 14 contiennent pour chaque type de munition une table de correspondance associant a chacune des valeurs d'une série de distances un temps de vol correspondant à la munition.The ROMs 14 contain for each type of ammunition a correspondence table associating with each of the values of a series of distances a flight time corresponding to the ammunition.

En appelant TV le temps de vol de la munition utilisée pour atteindre le but à la distance D, et si l'on désigne par α. l'angle correspondant au déplacement latéral en gisement du but pendant le temps de vol, ces paramètres sont liés par la relation :

Figure imgb0002
ce qui, en tenant compte de la relation précédente et en sapposant que la vitesse latérale VB du but reste constante, permet J'obtenir directement l'angle a2 en fonction des paramètres al, TV et Tm selon la relation
Figure imgb0003
 By calling TV the flight time of the ammunition used to reach the goal at distance D, and if we designate by α. the angle corresponding to the lateral displacement in bearing of the goal during the flight time, these parameters are linked by the relation:
Figure imgb0002
 which, taking into account the previous relation and assuming that the lateral speed VB of the goal remains constant, allows I to obtain directly the angle a 2 according to the parameters a l , TV and Tm according to the relation
Figure imgb0003

Le temps de vol est essentiellement fonction du type de munition et de la distance D, il est donné par les tables mémorisées.The flight time is essentially a function of the type of ammunition and the distance D, it is given by the stored tables.

Le système de tir permet donc de déterminer la direction de pointage en gisement sans avoir à calculer la vitesse latérale VB du but. Le signal EG correspondant se traduit par un écart LG sur l'écran (Fig.3F). Le système calcule également la hausse du canon qui assure le temps de vol TV à la distance D présentée, c'est-à-dire le signal ES auquel correspond l'écart LS sur l'écran.The shooting system therefore makes it possible to determine the direction of pointing in a field without having to calculate the lateral speed VB of the goal. The corresponding EG signal results in a LG deviation on the screen (Fig.3F). The system also calculates the rise in the barrel which ensures the flight time TV at the distance D presented, that is to say the signal ES to which the difference LS corresponds on the screen.

L'opérateur n'a plus qu'à réaligner le réticule en coïncidence avec le but, cette disposition est indiquée sur la Fig.3G et correspond à l'instant t2 sur la Fig.2. Le canon se trouve alors orienté selon la direction de pointage DPF pour le tir vers le but futur B3, cette direction de tir DPF étant décalée des valeurs a 2 en gisement et B en site par rapport à la direction du but en B2' Les valeurs a 2 et β correspondent respectivement aux signaux EG et ES transmis à la caméra. Le tir effectué aussitôt parvient en B3 à t3 = t2 + TV.The operator only has to realign the reticle in coincidence with the goal, this arrangement is indicated in Fig.3G and corresponds to time t 2 in Fig.2. The barrel is then oriented in the direction of aiming DPF for shooting towards the future goal B 3 , this direction of shooting DPF being offset by the values a 2 in bearing and B in elevation relative to the direction of the goal in B 2 ' The values a 2 and β correspond respectively to the signals EG and ES transmitted to the camera. The shot taken immediately arrives at B 3 at t 3 = t 2 + TV.

La position de l'axe canon sur l'écran correspond à celle initiale du réticule R et est symbolisée ensuite par un réticule en trait interrompus sur les Figs.3D à 3G.The position of the canon axis on the screen corresponds to that of the initial reticle R and is then symbolized by a crosshair in broken lines in Figs.3D to 3G.

Le diagramme Fig. 4 rappelle en fonction du temps les différentes actions de l'opérateur, les événements qu'ils entraînent, et la correspondance avec les schémas 3A à 3G.The diagram Fig. 4 recalls as a function of time the various actions of the operator, the events they cause, and the correspondence with the diagrams 3A to 3G.

Le calculateur 10 n'est pas décrit en détail, mais une mise en oeuvre préférée du système de conduite de tir selon l'invention prévoit que le microprocesseur 11, n'est pas utilisé pour calculer les paramètres balistiques du tir. Il cherche dans des tables, figées dans l'ensemble des mémoires mortes programmées 14, les différentes valeurs répondant aux conditions de tir selon la munition choisie. Le microprocesseur effectue toutefois les calculs qui ont été décrits précédemment et différents calculs annexes tels que des approximations linéaires. L'interface 15 comporte des convertisseurs analogiques-numériques pour fournir au microprocesseur les différentes données sous forme numérique. L'interface 16 comporte des convertisseurs numériques-analogiques suivis d'amplificateurs 25 et 26 afin de délivrer les signaux de réticule.The computer 10 is not described in detail, but a preferred implementation of the fire control system according to the invention provides that the microprocessor 11 is not used to calculate the ballistic parameters of the fire. It searches in tables, frozen in all of the programmed read-only memories 14, for the different values meeting the firing conditions according to the munition chosen. The microprocessor however performs the calculations which have been described previously and various additional calculations such as appr linear ximations. The interface 15 includes analog-digital converters to supply the microprocessor with the various data in digital form. The interface 16 includes digital-analog converters followed by amplifiers 25 and 26 in order to deliver the reticle signals.

Quelques particularités du programme des moyens de calcul 10 peuvent être envisagées pour les cas où le but modifie sa vitesse latérale ou s'arrête. Dans l'un de ces cas, le programme prévoit l'annulation de la mesure par une fermeture consécutive a une ouverture de l'un des deux interrupteurs poussoirs 20D, 20G, la mesure du temps Tm n'étant validée qu'au bout d'un certain temps, par exemple après environ 0,5 seconde.Some peculiarities of the program of the calculation means 10 can be envisaged for the cases where the goal modifies its lateral speed or stops. In one of these cases, the program provides for the cancellation of the measurement by closing consecutive to an opening of one of the two push switches 20D, 20G, the measurement of the time Tm being validated only after '' a certain time, for example after approximately 0.5 seconds.

D'autres paramètres tels que la vitesse latérale du vent peuvent influencer sur les valeurs de pointage de tir ES en site et EG en gisement. De même que le calculateur 10 détermine l'angle de hausse de tir β, il calcule la correction a apporter à l'angle a 2 de pointage compensant uniquement la vitesse latérale VB du but.Other parameters such as the lateral wind speed can influence the ES pointing score in elevation and EG in bearing. Just as the calculator 10 determines the angle of increase in shooting β, it calculates the correction to be made to the angle a 2 of aiming compensating only the lateral speed VB of the goal.

On peut prévoir pour faire apparaître le réticule R, un interrupteur de prise en charge dont la fermeture provoque également l'armement du laser de télémétrie.Provision may be made for the reticle R to appear, a support switch the closing of which also causes the telemetry laser to be armed.

Le microprocesseur Il peut être programmé différemment. Il peut commander le déclenchement de la mesure de la distance D au moyen du télémètre 8 dès la prise en charge du but. Dans ce cas, ceci peut permettre au calculateur 10 de régler la vitesse de déplacement VR du réticule R en fonction de la distance D mesurée par le télémètre laser 8.The microprocessor It can be programmed differently. It can command the triggering of the measurement of the distance D by means of the rangefinder 8 as soon as the goal is taken over. In this case, this can allow the computer 10 to adjust the speed of movement VR of the reticle R as a function of the distance D measured by the laser rangefinder 8.

Les moyens utilisés pour élaborer le réticule R étant de préférence incorporés dans la caméra 5, ceci permet d'utiliser plusieurs moniteurs de visualisation 6 à bord d'un même char de combat, un pour le tireur et un pour le chef de char par exemple.The means used to develop the reticle R being preferably incorporated into the camera 5, this makes it possible to use several display monitors 6 on board the same combat tank, one for the shooter and one for the tank commander for example .

Bien qu'une seule réalisation est été décrite, diverses modifications peuvent être apportées au système de tir selon l'invention sans sortir du cadre de celle-ci. Il est par exemple envisageable de remplacer la caméra 5 utilisée dans le dispositif de visée 4 par un système de visée optique, l'image du réticule R étant collimatée et superposée à l'image du champ d'observation. La caméra 5 peut également être simplement remplacée par un dispositif à barrette photo-détectrice, par exemple à circuit à transfert de charge, devant laquelle on produit un balayage de champ ; un tel dispositif peut correspondre à un FLIR (de la terminologie anglo-saxonne "Forward Looking Infra Red").Although only one embodiment has been described, various modifications can be made to the firing system according to the invention without departing from the scope thereof. It is for example conceivable to replace the camera 5 used in the sighting device 4 by a optical sighting system, the image of the reticle R being collimated and superimposed on the image of the field of observation. The camera 5 can also be simply replaced by a device with a photodetector array, for example with a charge transfer circuit, in front of which a field scan is produced; such a device can correspond to a FLIR (from the English terminology "Forward Looking Infra Red").

Claims (7)

1. Système de conduite de tir sol-sol pour un canon orientable en site et en gisement, comportant : - un dispositif de visée (4) pour observer un champ d'observation et pour y visualiser un réticule (R) dont la position initiale correspond à la direction de pointage DP du canon (2) et que l'on fait coïncider avec le but (B) à atteindre ; - un dispositif de télémétrie (8) pour la mesure de la distance (D) séparant le but (B) du canon ; - des dispositifs capteurs annexes (9) pour la mesure de paramètres balistiques divers ; - des moyens de commande manuelle (20) pour produire un déplacement du réticule qui tient compte du mouvement latéral du but ; - des moyens de gestion et de calcul (10) recevant les données de distance et des paramètres balistiques et tenant compte également dudit déplacement dudit réticule pour calculer des signaux de pointage de tir du canon (2) en direction du but futur,
caractérisé en ce que les moyens de commande manuelle sont connectés aux moyens de gestion et de calcul pour produire par action manuelle une information binaire de changement d'état qui déclenche un déplacement latéral instantané du réticule de même sens que celui du but, d'amplitude déterminée (E), aussitôt suivi du retour de celui-ci vers sa position initiale avec une vitesse constante déterminée VR , et pour produire ensuite par cessation de l'action manuelle, dès que le réticule coïncide à nouveau avec le but, le retour à l'état initial de l'information binaire et l'arrêt du réticule, les moyens de calcul et de gestion mesurant la durée de cette action manuelle et élaborant à partir des paramètres de durée et de distance ainsi que de celui du temps de vol TV du projectile établi en fonction de la distance et des paramètres balistiques, les signaux de pointage de tir en site (ES) et en gisement (EG).1. Ground-to-ground firing control system for an adjustable barrel in elevation and in deposit, comprising: - a sighting device (4) to observe a field of observation and to visualize a reticle (R) whose initial position corresponds to the pointing direction DP of the barrel (2) and which is made to coincide with the goal (B) to be achieved; - a telemetry device (8) for measuring the distance (D) separating the goal (B) from the barrel; - additional sensor devices (9) for measuring various ballistic parameters; - manual control means (20) for producing a displacement of the reticle which takes account of the lateral movement of the goal; management and calculation means (10) receiving the distance data and ballistic parameters and also taking into account said movement of said reticle to calculate aiming signals from the gun (2) towards the future goal,
characterized in that the manual control means are connected to the management and calculation means to produce by manual action binary information of change of state which triggers an instantaneous lateral displacement of the reticle in the same direction as that of the goal, of amplitude determined (E), immediately followed by the return thereof to its initial position with a determined constant speed VR, and to then produce by cessation of the manual action, as soon as the reticle coincides again with the goal, the return to the initial state of the binary information and the stop of the reticle, the calculation and management means measuring the duration of this manual action and developing from the parameters of duration and distance as well as that of the flight time TV of the established projectile depending on the distance and ballistic parameters, the firing pointing signals in elevation (ES) and in bearing (EG). 2. Système selon la revendication 1, caractérisé en ce que les moyens de commande manuelle comportent deux interrupteurs simples (20D,20G) correspondant à une commande de déplacement instantané du réticule (R) vers la gauche pour l'un et vers la droite pour l'autre, le choix de l'interrupteur s'effectuant en correspondance avec le sens du mouvement latéral VB présenté par le but (B).2. System according to claim 1, characterized in that the manual control means comprise two simple switches (20D, 20G) corresponding to a command for instantaneous movement of the reticle (R) to the left for one and to the right for the other, the choice of the switch being made in correspondence with the direction of lateral movement VB presented by the goal (B). 3. Système selon la revendication 1 ou 2, dans lequel les signaux de pointage de tir comportent une hausse en site (ES) déterminée principalement par le temps de vol TV , c'est-à-dire en fonction de la distance, du type de munition et des paramètres balistiques, et un écart latéral en gisement (EG) déterminé essentiellement en fonction du mouvement latéral du but (B), caractérisé en ce que ledit écart latéral a2 est donné par la relation : tgα2 = (tga 1).TV/Tm ou TV est le temps de vol, Tm la durée d'action manuelle, et a le dépointage angulaire latéral parcouru par le but durant l'action manuelle, ladite relation ne faisant pas intervenir le calcul de la vitesse latérale VB du but.3. The system as claimed in claim 1 or 2, in which the shot pointing signals comprise an elevation in elevation (ES) determined mainly by the flight time TV, that is to say as a function of the distance, of the type of ammunition and ballistic parameters, and a lateral deviation in deposit (EG) determined essentially as a function of the lateral movement of the goal (B), characterized in that said lateral deviation a2 is given by the relation: tgα 2 = (tga 1 ) .TV / Tm or TV is the time of flight, Tm the duration of manual action, and has the lateral angular deflection traveled by the goal during manual action, said relation not involving the calculation of the lateral speed VB of the goal. 4. Système selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de visée (4) est constitué à l'aide d'une caméra de prise de vues vidéo (5) et d'un moniteur de visualisation (6), la caméra ayant dans son axe optique constamment orienté selon la même direction que celle de pointage (DP) du canon et recevant des moyens de gestion et de calcul (10) des signaux de positionnement du réticule (R) constitués, finalement, par lesdits signaux de pointage de tir en site (ES) et en gisement (EG), ladite caméra délivrant au moniteur un signal vidéo composite correspondant à la représentation simultanée du champ observé et du réticule.4. System according to any one of the preceding claims, characterized in that the aiming device (4) is formed by means of a video camera (5) and a display monitor (6 ), the camera having in its optical axis constantly oriented in the same direction as that of pointing (DP) of the gun and receiving means of management and calculation (10) of the positioning signals of the reticle (R) constituted, finally, by said firing pointing signals in elevation (ES) and in bearing (EG), said camera delivering to the monitor a composite video signal corresponding to the simultaneous representation of the observed field and of the reticle. 5. Système selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de gestion et de calcul (10) sont réalisés à l'aide d'un microprocesseur (11), associé à des mémoires vives (13) et à des mémoires mortes programmées (14), ces dernières comportant d'une part, des tables de correspondance pour faire correspondre à la valeur mesurée de durée d'action manuelle Tm la valeur trigonométrique tg α 1 de déplacement angulaire latéral a correspondante et d'autre part, des tables de tir pour le calcul du temps de vol TV en fonction du type de munitions des données balistiques et de la distance D.5. System according to any one of the preceding claims, characterized in that the management and calculation means (10) are produced using a microprocessor (11), associated with random access memories (13) and with programmed read-only memories (14), these niers comprising on the one hand, correspondence tables to correspond to the measured value of manual action duration Tm the trigonometric value tg α 1 of corresponding lateral angular displacement a and on the other hand, firing tables for the calculation TV flight time depending on the type of ammunition, ballistic data and distance D. 6. Système selon l'un des ensembles de revendications 2 et 4, 2 et 4 et 5, caractérisé en ce que le dispositif de télémétrie (8) est un télémètre optique à laser dont l'axe de rayonnement a la même direction (DP) que celle de pointage du canon, ce dispositif de télémétrie ainsi que la caméra (5) du dispositif de visée (4) étant rendus solidaires du canon, et que les moyens de commande manuelle (20) sont réalisés sous forme de deux boutons poussoirs (20D, 20G) pour produire chacun un changement d'état binaire sur une liaison correspondante vers les moyens de gestion et de calcul (10).6. System according to one of the sets of claims 2 and 4, 2 and 4 and 5, characterized in that the telemetry device (8) is an optical laser rangefinder whose radiation axis has the same direction (DP ) that of the barrel pointing, this telemetry device as well as the camera (5) of the sighting device (4) being made integral with the barrel, and that the manual control means (20) are produced in the form of two push buttons (20D, 20G) to each produce a change in binary state on a corresponding link to the management and calculation means (10). 7. Système selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de gestion et de calcul (10) sont programmés pour répondre à une procédure de conduite de tir comportant les étapes essentielles suivantes : - alignement préalable du réticule (R) avec le but (B) observé, le réticule correspondant à la direction (DP) de l'axe du canon ; - commande manuelle de l'interrupteur (20) correspondant au sens de déplacement latéral du but ; - maintien de la commande manuelle durant le retour à vitesse constante du réticule ; - arrêt de la commande manuelle lorsque le réticule coïncide a nouveau avec le but ; - alignement du réticule avec le but, le réticule étant décalé des valeurs de pointage de tir, hausse (ES) en site et écart latéral (EG) en gisement, par rapport à l'axe canon ; ces valeurs étant calculées par les moyens de gestion et de calcul (10) a partir de la durée Tm mesurée de l'action manuelle, de la distance (D) d'éloignement du but, du type de munition et des données balistiques ; - déclenchement du tir. 7. System according to any one of the preceding claims, characterized in that the management and calculation means (10) are programmed to respond to a fire control procedure comprising the following essential steps: - Prior alignment of the reticle (R) with the object (B) observed, the reticle corresponding to the direction (DP) of the axis of the barrel; - manual control of the switch (20) corresponding to the direction of lateral movement of the goal; - maintaining manual control during the return to constant speed of the reticle; - stopping the manual control when the reticle coincides again with the goal; - alignment of the reticle with the goal, the reticle being offset by the shooting score, rise (ES) in elevation and lateral deviation (EG) in bearing, with respect to the barrel axis; these values being calculated by the management and calculation means (10) from the measured duration Tm of the manual action, the distance (D) away from the goal, the type of ammunition and ballistic data; - firing.
EP84401029A 1983-05-31 1984-05-18 Ground-to-ground fire control system Withdrawn EP0127528A1 (en)

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FR8309010A FR2547045B1 (en) 1983-05-31 1983-05-31 GROUND-TO-GROUND SHOOTING SYSTEM
FR8309010 1983-05-31

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EP0785406A2 (en) * 1996-01-22 1997-07-23 HE HOLDINGS, INC. dba HUGHES ELECTRONICS Method and device for fire control of a high apogee trajectory weapon
WO1998051987A1 (en) * 1997-05-13 1998-11-19 Industrieanlagen-Betriebsgesellschaft Mbh Video sighting unit with integrated firing line for rifles
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FR2344807A1 (en) * 1976-03-17 1977-10-14 Realisa Electroniques Et Antitank rocket firing tube sight - employs laser and calculator on same axes of rotation as tube
FR2371735A1 (en) * 1976-11-18 1978-06-16 Galileo Spa Off Electronic sight for light weapon - uses multiplier, decoder and timing system to process signals from line of light diodes
FR2384227A1 (en) * 1977-03-18 1978-10-13 Sopelem Firearm aiming system for moving target - has cross-wires driven proportionately to telescope angular velocity with timer stopped after period proportional to range
DE2841622A1 (en) * 1978-09-25 1980-04-03 Siemens Ag Optical target detection system - has laser rangefinder with own observation and picture transmission unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2068092A2 (en) * 1992-06-23 1995-04-01 Instalaza Sa Firing director system for direct fire weapon
EP0785406A2 (en) * 1996-01-22 1997-07-23 HE HOLDINGS, INC. dba HUGHES ELECTRONICS Method and device for fire control of a high apogee trajectory weapon
EP0785406A3 (en) * 1996-01-22 1999-12-01 Raytheon Company Method and device for fire control of a high apogee trajectory weapon
WO1998051987A1 (en) * 1997-05-13 1998-11-19 Industrieanlagen-Betriebsgesellschaft Mbh Video sighting unit with integrated firing line for rifles
RU2474782C1 (en) * 2011-07-22 2013-02-10 Александр Викторович Крестьянинов Method of sniper fire remote control

Also Published As

Publication number Publication date
FR2547045B1 (en) 1985-07-05
FR2547045A1 (en) 1984-12-07
NO842182L (en) 1984-12-03

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