RU2317504C1 - Method for fire by guided projectiles with laser semi-active homing head at several targets - Google Patents

Abstract

FIELD: armament, in particular, control of artillery guided projectiles with a laser semi-active homing head locking-on the lighted target in the terminal trajectory leg and designed for fire control art a fire by guided ammunition with a homing head.

SUBSTANCE: the method consists in numbering of the guns, determination of the quantity and order of destruction of targets for each target beginning from the first one, measurement of the distance from the target indicator to the target, and of the target azimuth relative to the target indicator. Surveying of each target to the terrain in the reconnaissance console by computation according to the data o target indicator surveying, conversion of the co-ordinates of the targets in the reconnaissance console to a sequence of binary codes and transmission of them through the digital radio communication to the firing position console. Fire-mission setting for each gun is computed in the firing position console according to the co-ordinates of the respective targets and surveying of the respective gun at a computer time common with the reconnaissance console, realization of the fire-mission setting on the gun with the respective number. The shots are accomplished in the order of gun numbering, the command for fire by the next gun is produced by the firing position console according to the following relationship: T_{fire i+1}=T_{shot i}+ΔT_{flight i}+ΔT_H-T_{d.lm. i+1}, i=1, 2, ...n, where: T_{fire i+1}-time of output of fire command at the next target: T_{shot i} - the instant of shot time at the i-th target; ΔT_{flight i}-the projectile light time to the i-th target; ΔT_H-the of target indicator reaming to the next target; ΔT_{d.lm. i+1}-the delay of engagement of target indicator to lighting mode at the i+1-th target; n-the quantity of destructed target. Each shot is fixed in the firing position console, the target indicator after aiming of the projectile on the previous target is transferred to the next rated, and laser emission on each is engaged and disengaged by a signal from the reconnaissance console at attainment of the respective time preset the firing position console.

EFFECT: reduced time of destruction of several targets due to a complex delivery of fire by several guns at a number of targets with employment of one target indicator.

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Description

The invention relates to the field of armament, in particular to the management of artillery guided projectiles with a laser semi-active homing head, capturing the illuminated target at the end of the trajectory.

The invention is intended to control the fire of mortars and barrel artillery calibers of the type 120, 122, 152, 155 mm when firing at targets with guided munitions with a homing head.

A known method of firing at targets from cannons with unguided ammunition [Patent RU No. 2111437 of 05.20.98, IPC 6 F41G 5/14 - Method and device for aiming guns]. The disadvantage of this method is that this method does not take into account the characteristics of firing guided ammunition.

As a prototype, a method of firing a guided projectile with a laser semi-active homing head was selected [Patent RU No. 2247297 of 02.27.2005, IPC 7 F41G 5/00, 7/22 - Method of firing a guided projectile with a laser semi-active homing].

The method of firing a guided projectile with a semi-active laser homing head is as follows: a fixed target is detected by the target, then the distance from the target to the target and the target azimuth relative to the target are measured; using topographic reference of the target, target designator and firing position with a gun to the terrain, the calculation of firing settings for the coordinates of the target and firing position is performed. Next, the projectile is aimed at the target, including pointing the gun at the target according to the calculated shooting settings, a shot and guiding the projectile at the target illuminated after firing with laser radiation of the target indicator. Topographic reference of the target to the terrain and the transformation of its coordinates into a sequence of binary codes is carried out using the reconnaissance console, and the calculation of the firing settings for the gun is carried out using the console firing position. Synchronization of the designator, reconnaissance remote control, firing position remote control and guns is carried out by pressing the appropriate keys and voice messages. At the same time, a single computer time is organized in the reconnaissance panel and in the firing position panel, and after the shot is fired, the digital radio link is established between the firing position panel and the reconnaissance panel to transmit the target switch on time to the backlight mode, and the signal to switch to the target illumination mode is automatically It is sent from the reconnaissance panel to the target indicator when the on-time is reached.

The disadvantage of the prototype is that the method does not take into account the characteristics of firing at several targets. In the method there is no possibility of producing the next shot until the projectile guidance on the target is completed (figure 1). If a shot is fired before the aiming projectile is aimed at the target, then a situation may arise when one operation of aiming the projectile at the target has not yet ended, and it is already necessary to start guiding the next munition, which ultimately leads to an unpredictable flight of the munition and miss.

The objective of the invention is to reduce the time of destruction of several targets and increase the reliability of firing with guided artillery ammunition in case of defeat of several targets.

This problem is achieved due to the fact that in the known method of firing guided projectiles with a laser semi-active homing target for several targets, including target detection by a target, measuring the distance from the target to the target and the target azimuth relative to the target, topographic reference of the target to the terrain in the reconnaissance console by calculation according to the topographic location of the target indicator, the conversion of the coordinates of the target in the reconnaissance panel into a sequence of binary codes and their transmission by digital of direct radio communication to the firing position console, calculating firing positions in the firing position console with a computer time unified with the reconnaissance console, making the installations, firing and aiming the projectile at a target illuminated after firing with laser radiation from the target designator, it’s new that the firing is carried out by several pre-numbered implements, until targets are detected by the target, set the number and order of hitting targets, measure the distance from the target and the azimuth relative to the target, then graphic reference to the terrain in the reconnaissance console, the conversion of coordinates in the reconnaissance console into a sequence of binary codes and their serial transmission via digital radio communication to the firing position console is carried out for each target starting from the first, the firing position in the console of the firing position is calculated for each weapon according to the coordinates of the corresponding goals and topographic reference of the corresponding guns, the implementation of installations is carried out on the guns with the corresponding number, the production of shots is carried out in the order of the numbering of the guns, and the command to fire the next gun produces a remote firing position in the ratio:

_Fire T _{i + 1} = T +? T _{i shots flight i} +? T _n -ΔT _{ZP i + 1} , i = 1, 2, ... n,

where T _{fire i + 1} - the time of issuing the command to fire at the following target;

T _{shot i} - the time of the shot at the i-th target;

ΔТ _{flight i} - flight time of the projectile to the i-th target;

ΔT _n - time retargeting of the target to the next target;

ΔТ _{s.p. i + 1} - delay in the inclusion of the designator in the backlight mode for i + 1-th target,

n is the number of targets hit;

the production of each shot is fixed in the firing position console, while the target pointer, after pointing the projectile to the previous target, is transferred to the next target, and the laser radiation is turned on and off for each target by a signal from the reconnaissance console when the corresponding time specified from the firing position console is reached.

The method is illustrated in graphic materials (figure 1, figure 2), where figure 1 shows the method of defeating several targets of the prototype, and figure 2 - of the proposed method.

The proposed method of firing from artillery guided projectiles with a laser semi-active homing head for several purposes is implemented as follows: in combat order, the artillery battery is located at a great distance from the line of contact with the enemy. A scout is sent to the battle contact line with a laser rangefinder (LCD), satellite navigation equipment, a digital radio station and a reconnaissance console, and the LCD outputs, satellite navigation equipment and a digital radio station through connectors are connected to the reconnaissance console.

Using satellite navigation equipment, the coordinates of the LCD are determined, for example, in a rectangular coordinate system (X _LCD , Y _LCD , Z _LCD ) and entered into the reconnaissance console.

A laser pointer with a rangefinder and a target channel serves to detect and track the target, as well as to determine the coordinates of the target, such as the range and bearing of the target relative to the LCD.

In the firing position console, for example, from the satellite navigation equipment, the coordinates and heights of the guns (X _i , Y _i , Z _i ) batteries (i = 1, 2, ... n) are entered, meteorological and ballistic conditions are entered from the keyboard for ballistic calculations firing.

Battery guns are numbered. Shooting is carried out by several guns for several targets, but aiming the projectile at the target provides one LCD.

Prior to measuring the coordinates of targets, the target indicator sets the number and order of hitting targets. For each target, starting with the first, the scout, using LCD, sequentially measures the range to the target, azimuth and elevation angle of the target relative to the target indicator (D _C , α _C , ε _C ). The measurement results are transmitted to the reconnaissance panel and converted, for example, into a rectangular coordinate system of topographic location (X _C , Y _C , Z _C ), displayed on the screen of the reconnaissance panel. The coordinates of the targets are converted into a sequence of binary codes, for example, according to the EIA standard of the RS232C interface and transmitted to the firing position console via digital radio communication.

In the firing position panel using the coordinates of the targets received by radio, the measured coordinates of the guns, the meteorological and ballistic conditions of fire entered, the firing settings are calculated, for example, according to patent RU No. 2111437 of 05.20.98, IPC 6 F41G 5/14 - Method and device for aiming guns.

After calculating the firing settings, the calculated settings are implemented on the guns with the corresponding number.

The production of shots is carried out in the order of numbering guns.

At the time of the first shot on the firing position console, the commander switches on the “Shot” button, while the shot time is read according to the clock of the single-time system and the delay time for the LCD to turn on in target illumination mode is assigned, taking into account the total flight time of the projectile. The message "Shot" containing the time the LCD was turned on in the target illumination mode is transmitted to the reconnaissance console in the form of a sequence of binary codes and is displayed on the reconnaissance console screen.

The scout, through the LCD, is aimed at the target that strikes the first, and holds it at the crosshairs of the sighting channel.

Together with the message about the shot, the value of the required time for the LCD to turn on in the target illumination mode comes to the reconnaissance panel via digital radio communication together with the message about the shot. The LCD laser turn-on time is automatically set based on the indications of the unified time of the firing position panel and the reconnaissance panel.

At the appropriate time, the signal to turn on the laser radiation from the reconnaissance panel is automatically issued via a digital interface, for example RS232, in the LCD and the laser beam illuminates the target.

When the projectile approaches the target and the LCD radiation reflected from the target enters the field of view of the homing head (GOS), the GOS target is captured, and rudder commands are generated in the guided projectile to guide the projectile to the center of the laser spot. Turning off the laser radiation is carried out automatically from the reconnaissance panel.

The command to fire the following weapon for the next target is developed by the firing position console in the ratio:

_Fire T _{i + 1} = T _i + ΔT _{shots flight i} + ΔT _n -ΔT _{ZP i + 1} , i = 1, 2, ... n,

where T _{fire i + 1} - the time of issuing the command to fire at the following target;

T _{shot i} - the time of the shot at the i-th target;

ΔТ _{flight i} - flight time of the projectile to the i-th target;

ΔT _n - time retargeting of the target to the next target;

ΔТ _{s.p. i + 1} - delay in the inclusion of the designator in the backlight mode for i + 1-th target,

n is the number of targets hit.

The scout, upon completion of the operation of guiding the projectile at the target and its defeat, directs the LCD to the next target being hit.

Coordinate transformations in the proposed method can be performed using the following coordinate systems.

Binding of the LCD and the firing position at which the gun is located, to the terrain, it is desirable to produce in a full rectangular coordinate system (SK).

LCD captures the target in polar SC (range, azimuth, elevation). In the reconnaissance console, the target coordinates entered from the LCD are converted to a rectangular SK. Through radio communication, the coordinates of the topographic location of the target in a rectangular SK are sent to the firing position console.

In the firing position console, the target and gun coordinates are used to determine the range to the target, elevation difference, and also calculate the shooting settings in the polar coordinate system associated with the gun; moreover, the X axis of the coordinate system is oriented to the target. A gun is being guided by these installations.

The projectile in the first section during uncontrolled flight moves along a ballistic trajectory determined by the aiming of the gun. In the second section, after turning on the homing head, the projectile is controlled in the polar SC associated with the longitudinal axis of the projectile.

To implement the method, the devices described in the prototype can be used.

This method of firing guided projectiles with a laser semi-active homing head in comparison with the prototype allows firing multiple guns of the battery and thereby ensure a gain in a duel situation by minimizing the time it takes to hit multiple targets.

Claims (1)

A method of firing guided projectiles with a laser semi-active homing head at several targets, including detecting each target with a target indicator and determining the coordinates of targets, implementing installations, firing shots, while firing is carried out with several pre-numbered guns, before measuring the coordinates of the targets with the target pointer, the number and order of hitting targets are set, for each target, starting with the first, they measure the distance from the target designator and azimuth relative to the target designator, topog aficheskoe reference to the terrain in the reconnaissance console, the conversion of coordinates in the reconnaissance console into a sequence of binary codes and their serial transmission via digital radio communication to the firing position console, the calculation of the firing position in the firing position console is performed with the computer time unified with the reconnaissance console for each weapon according to the coordinates goals and topographic reference of the corresponding guns, the implementation of installations is carried out on the guns with the corresponding number, the production of shots and guidance the projectile is fired at the target illuminated after firing with laser radiation of the target designator, they are executed in the order of the numbering of the guns, and the firing position remote control produces a command for firing each subsequent gun according to the ratio _Fire T _{i + 1} = T _i +? T _{shots flight i} + ΔT _n -ΔT _{ZP i + 1} , i = 1, 2, ..., n, where T _{fire i + 1} - the time of issuing the command to fire at the following target; T _{shot i} - the time of the shot at the i-th target; ΔТ _{flight i} - flight time of the projectile to the i-th target; ΔT _n - time retargeting the target to the next target; ΔТ _{s.p. i + 1} - delay in turning on the target indicator in the backlight mode for the i + 1-st target; n is the number of targets hit, the production of each shot is fixed in the firing position console, while the target pointer, after pointing the projectile to the previous target, is transferred to the next target, and the laser radiation is turned on and off for each target by a signal from the reconnaissance console when the corresponding time specified from the firing position console is reached.

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