RU2769559C1 - Method for detecting and hitting an underwater target - Google Patents

Abstract

FIELD: radio location.

SUBSTANCE: invention relates to means of detecting and hitting underwater objects. A self-propelled underwater projectile with an acoustic transducer antenna and a trajectory correction system is set together with a radiohydroacoustic buoy, wherein said projectile is submerged after landing on water to a depth equal to the length of the flexible connection connecting the projectile with the float used to hold the self-propelled underwater projectile and the acoustic search system of the buoy in the water. When a target enters the area of reach of the self-propelled underwater projectile, a signal to attack the target is sent from the control point or the electronic unit of the buoy. The flexible connection of the float with the self-propelled underwater projectile is broken, the propeller thereof is launched and directed towards the target, the acoustic transducer antenna and a trajectory correction system are activated, the target is detected, the self-propelled underwater projectile is aimed at the target, the body of the target is hit, and an explosive apparatus is used to strike the target.

EFFECT: using a unified search and strike mechanism, underwater objects are detected at a long distance and attacked in the shortest time.

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Description

The invention relates to means for detecting and destroying underwater objects.

A known method of detecting and hitting an underwater target with an aviation anti-submarine bomb with an adjustable gravity projectile, which is analogous to the invention [1], in which an aviation anti-submarine bomb with an adjustable gravity projectile is delivered by an aircraft (LA) to the calculated point, dropped, driven, the float is activated and immerse the bomb to a depth equal to the length of the flexible connection connecting the bomb to the float that holds the bomb in the water. Then, an acoustic transmitting and emitting antenna of a corrected gravity projectile and an electronic signal processing unit are switched on, with the help of which two channels are formed - an underwater target detection channel and a channel for confirming the fact that the target is in the catch-up zone with the projectile. When an underwater target enters the coverage area of the first channel, it is detected by a receiving-emitting antenna, and when it enters the coverage area of the second channel, the flexible connection is cut off, the corrected gravitational projectile is separated and, using the trajectory correction system, the projectile is aimed at the target, enters its body, and the explosive device is activated and hit the target [1].

A method for detecting and destroying an underwater target using an anti-submarine bomb with a corrected gravity projectile is shown in Fig. 1, which shows how an aircraft anti-submarine bomb with a corrected gravity projectile (1) is dropped from an aircraft (2) at the calculated point (3). In flight, a parachute (4) and a float (5) are separated from it, which is inflated through a non-return valve during the flight with an oncoming air flow, and with the help of a parachute (4) the fall of the bomb is slowed down. After landing the bomb, it is held by a float (5) at a given depth from the water surface (7) using a flexible connection (6).

The underwater target (8) is detected when it enters the coverage area of the first channel (9) of the acoustic transceiver antenna. If the underwater target falls within the coverage area of the second channel of the acoustic transceiver antenna, which determines the zone of its catch-up (10) by the corrected gravitational projectile (1), then the projectile is separated from the flexible connection (6) with the float (5) and directed (11) to the target ( 8) on commands of the trajectory correction system, they enter the target body (8), activate the explosive device and hit the target. The driving force of the corrected gravitational projectile when aiming at the target is the force of its negative buoyancy. Commands for projectile separation and operation of its rudders are generated in the electronic unit, taking into account the data of its hydrodynamic characteristics, which determine the target catch-up zone and the required trajectory correction angles.

The method is used when an underwater target is previously detected by positional, ship or aircraft detection means, since the range of the acoustic receiving and emitting antenna of a corrected gravitational projectile is very small and does not allow it to be used for the primary search for underwater objects. This circumstance is a significant disadvantage of the method.

A known method of detecting underwater objects in the sea using sonar buoys (RSL), which expose ships or aircraft. The method is taken as a prototype of the invention. With the help of the RSL, data on the underwater situation are obtained by the acoustic method, which are transmitted via radio to the control point. The RSL is used to search for submarines, determine their coordinates and movement parameters, and also to obtain data on the spectrum, intensity of underwater noise and acoustic fields of ships, ships and other objects [2].

Modern RSL are classified by carriers (aviation and shipborne), by the method of holding the place (anchor and floating), by the frequencies used (sound range and low-frequency), by the mode of operation (passive, active and passive-active, omnidirectional and directional), by the method transmission of information (continuous and on demand). The most widely used passive, active, non-directional and directional RSL [2].

The RSL device includes a housing with an electronic unit, an information transmitter, a power source, as well as a hydrophone of an acoustic system buried on a cable. For dropping from the aircraft, the RSL is additionally equipped with a braking device detachable after splashdown [2].

With the help of passive non-directional RSL, noise is detected, their spectral composition and intensity are determined, which makes it possible to establish the fact of detection of a submarine. They are used independently or in conjunction with explosive sound sources dropped from aircraft. With the help of passive directional RSLs, the bearing to the noise source is fixed, and the range to the submarine is determined from the echo signal of active non-directional RSLs. As a result of mathematical processing of data received from several RSL, as well as the Doppler frequency shift, the target location and its speed are calculated. Active directional RSL determine the coordinates of the target - bearing and distance to it. Passive-active RSLs operate in two modes: in the active mode, they receive the coordinates of the target, and in the passive mode, they conduct covert surveillance of the target. The detection range of a submarine with the help of the RSL reaches 10-12 km or more, the range of receiving information via a radio channel is 60-80 km [2].

The information about the detected target received from the acoustic system is preliminarily processed in the RSL electronic unit, and the contact is finally classified at the control center, aircraft or ship. When means of destruction are used on a detected target, additional time is required for their delivery, information about the location of the target becomes outdated, and the probability of its destruction decreases. The presence of a time interval between the detection of the target and the use of weapons on it leads to a decrease in the probability of hitting the target and is a disadvantage of this method.

The aim of the invention is to develop a method for detecting and destroying an underwater target using a single search and strike tool that is capable of both detecting underwater objects at a long distance and reporting this to the control point, and attacking them in the shortest possible time.

This goal is achieved due to the fact that a method is proposed for detecting and destroying an underwater target, in which at least one radio-acoustic buoy is set in a given area by a ship or aircraft, its acoustic search system with an electronic signal processing unit is turned on, an underwater target is detected, information is transmitted about the target via a radio channel to the control point, process and classify it in the electronic unit of the radio-acoustic buoy and at the control point, characterized in that, together with the radio-acoustic buoy, a self-propelled underwater projectile with an acoustic transceiver antenna and a trajectory correction system is placed, which, after splashdown, is immersed to a depth, equal to the length of the flexible connection connecting the projectile with the float, with the help of which the self-propelled underwater projectile and the acoustic search system of the buoy are kept in the water, when the target enters the reach zone of the self-propelled underwater projectile from the control point or electronic b buoy locks give a signal about the attack of the target, break the flexible connection of the float with the self-propelled underwater projectile, start its mover and direct it towards the target, turn on the acoustic receiving-radiating antenna and the trajectory correction system, detect the target, point the self-propelled underwater projectile at the target, hit its body, activate explosive device and hit the target.

The implementation of the method for detecting and destroying an underwater target is shown in Fig. 2 and 3.

At the calculated point (3) (Fig. 2), a sonar buoy with an acoustic search system having a cable (12), a hydrophone (receiving device) (13), a float is dropped from the carrier, for example, from an aircraft (2) on a parachute (4). (5) and an antenna (14) and a self-propelled underwater projectile (15) combined into a single structure. After splashdown, the float (5) with the antenna (14) is left on the water surface (7), the acoustic search system with the cable (12) and the hydrophone (receiving device) (13) is immersed to a predetermined depth, and the self-propelled underwater projectile (15) is immersed to depth equal to the length of the flexible connection (16) connecting it to the float (5). On command from the control point or on readiness, an acoustic search system is switched on, the detection zone (17) of which is shown in Fig. 2 and 3. After the underwater target (8) enters the detection zone (17) of the acoustic search system, it is detected (18), classified, transmitted (19) information to the control point and monitored. When the target (8) approaches the self-propelled underwater projectile (15) at the range of its reach by the projectile, on command from the control center or electronic unit, the flexible connection (16) of the projectile (15) with the float (5) is cut off, the propulsor is started and the projectile is directed (20) towards the target (8), turn on its acoustic transceiver antenna having a detection zone (21), detect the target and direct (22) a self-propelled underwater projectile (15) at it using a trajectory correction system until it hits the target body and defeats it.

The technical result of the invention is a method for detecting and hitting an underwater target using a radio-acoustic buoy and a self-propelled underwater projectile, combined into a single design, in which an underwater target is detected at a great distance with the help of a radio-acoustic buoy, and with the help of a self-propelled underwater projectile they attack it when approaching at an accessible range in real time.

Sources of information used in identifying the invention and compiling its description:

1. Patent RU 2289783. A method for increasing the efficiency of targeting an anti-submarine guided gravity projectile at an underwater target and a device for its implementation / Babich G.A. and others. M.: FIPS, 2006. Bull. No. 35.

2. Sonobuoy. Naval Dictionary / Ch. ed. V.N. Chernavin. M.: Voenizdat, 1989. 511 p. S. 352.

Claims (1)

A method for detecting and hitting an underwater target, in which at least one radio-acoustic buoy is set up in a given area by a ship or an aircraft, its/their acoustic search system with an electronic signal processing unit is turned on, an underwater target is detected, information about the target is transmitted via a radio channel to a control point, it is processed and classified in the electronic unit of the radio-acoustic buoy and at the control point, characterized in that together with the radio-hydroacoustic buoy, a self-propelled underwater projectile with an acoustic receiving-emitting antenna and a trajectory correction system is placed, which, after splashing down, is immersed to a depth equal to the length of the flexible connection connecting the projectile with float, with which the self-propelled underwater projectile and the acoustic search system of the buoy are kept in the water, when the target enters the reach zone of the self-propelled underwater projectile from the control center or the electronic unit of the buoy, a signal is given about the attack of the target, the flexible connection is cut off melting with a self-propelled underwater projectile, start its propulsor and direct it towards the target, turn on the acoustic transceiver antenna and the trajectory correction system, detect the target, point the self-propelled underwater projectile at the target, hit its body, activate the explosive device and hit the target.

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