JPS60113168A - Deceptive acoustic target - Google Patents

Abstract

PURPOSE:To eliminate a danger in re-search of a homing sailing body and obtain an inexpensive deceptive acoustic target which is easy to operate, by providing a structure which is operated as the acoustic pseudo target for the homming sailing body after being projected from a projecting mechanism of a vessel on the water and landing on the water. CONSTITUTION:A transmitter and receiver 1 incorporates a responder transmitter and receiver 2 where signals received from a deceptive signal transmitting material, which transmits signals through a suspension cable 4, and a responder receiver 2B are inputted through the suspension calbe 4 and are amplifier and a frequency shift corresponding to the quantity of Doppler shift is given to them and they are transmitted to a responder transmitter 2A through the suspension calbe 4 again. An active homing sailing body is provided by these transmitter and receiver 1 and responder transmitter and receiver 2, and a deceptive sound source function for a passive homing sailing body is provided by a deceptive signal transmitting part and a deceptive acoustic wave transmitter 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a deceptive acoustic target, which is projected by a projector from a surface ship, flies to a predetermined spatial distance, lands on water, and then targets acoustic targets such as transmitters and receivers. This invention relates to a stationary deceptive acoustic target after flight that deploys a group to a predetermined R degree in the sea and deploys it in an operational state to deceive homing vehicles that attack own ships.

In order to avoid attacks by acoustic homing vehicles launched from enemy submarines in the ocean, surface ships tow or self-propel acoustic pseudo-targets equipped with pseudo-sound sources with characteristics similar to the acoustic noise WNote emitted by their own ships. Deceptive summoning targets, which aim to deceptively guide homing vehicles out of the homing range of one's own ship, are well known.

Traditionally, this type of deceptive sound, lightning, and target is a so-called towing jammer (formerly known as a towing jammer)
), and self-propelled underwater tV targets have been used.

However, both ministries state that ``Although it is possible to avoid the first attack of a homing vehicle, there is a drawback in that there is a risk that the M4 may end up in the direction of one's own ship in response to a re-search attack of a homing vehicle.'' .

In addition, in the latter case, apart from low-performance, disposable devices used for training purposes, practical devices are generally complex and large in size, making them inconvenient to handle and expensive.

FIG. 1 is an explanatory diagram of the deceptive guidance operation of a conventional towed type deceptive acoustic target.

It is assumed that a surface ship A is towing a deceptive acoustic target T via a towing cable W of a predetermined length while proceeding in the same direction. When the homing vessel B searches for the surface ship A using an active or passive method according to the travel program set at the time of launch, it detects the false sound emitted by the deceptive acoustic target T as a target. , the deceptive sound target 1' is approached as shown by the dashed-dotted line arrow while receiving the pseudo sound from the pseudo sound T from the deceptive sound target 1'. However, in this case, the following problem occurs.

In other words, the homing vehicle B hits the deceptive acoustic target T and the objective is completed at fC4, but the homing vehicle B hits the deceptive acoustic target, which is usually very small in size compared to the own ship.
It is extremely easy for a four-engineer to miss the vicinity of a deceptive acoustic target. In such a case, the homing range body B, which has lost the reception input during active or passive homing, continues to move straight for a predetermined period of time as shown in Figure 1:C, and then makes a clockwise turning motion.
- Rire searches again for the deceptive sound %'J4'3 target and continues the homing attack, and the bag may also hit, so it will continue like this until the cruising life of the Q e-homing vehicle runs out. Repeat the search motion.

During such a re-search homing operation after the first attack, there is always an opportunity for the homing vehicle B to track the surface ship A from almost behind it, and the transmission and reception directional characteristics of the homing vehicle B and Depending on the combination of conditions such as the surface ship's path, the homing vehicle B may be in a position to directly hit the surface ship A without being affected by the deceptive acoustic target T, or the homing vehicle B may be ready to directly hit the surface ship A without being affected by the deceptive acoustic target T. If you search again and hit this, you will only need to hit it, but as mentioned above, if you pass nearby, there is a much higher probability that you will be in a position to hit the surface ship directly from the stern direction. turn into. This is why Eikoya's deceptive acoustic target T
Although it is possible to avoid the towing ship in response to the first attack of the homing vehicle, there is a possibility that the homing vehicle will be guided towards the towing ship in response to evasion during re-search. The problem arises that the number of 1s is extremely high. In order to eliminate the problem of id during re-search, one method is to make the round fGJC cable W sufficiently long compared to the homing range, but it is not recommended to make it too long. It is clear that the homing vehicle will judge the surface shipman and the deceptive acoustic bridge T as different targets, and therefore the deceptive acoustic target T is a deceptive object for the surface shipman. You will lose your purpose.

In addition, if a self-propelled underwater acoustic target is used instead of such a deceptive acoustic target T of a towing company, it is large and multiple, making it inconvenient to handle, and moreover, it becomes an expensive disposable item. This may cause problems such as

Therefore, in order to create a deceptive acoustic target for homing vehicles that avoids the above-mentioned problems, it is possible to develop an operational system that can eliminate the drawbacks of conventional deceptive acoustic targets, either towing type or self-propelled type. It is necessary to have a structure.

The object of the present invention is to eliminate the above-mentioned drawbacks, and provide a structure that is projected by a projection mechanism of a surface ship, flies a predetermined spatial distance, and operates as an acoustic pseudo target for a homing vehicle after landing on water. The object of this invention is to fundamentally eliminate the danger of guiding one's own ship when re-searching for a vehicle, and to provide a stationary deceptive acoustic target that is easy to operate and inexpensive.

The device of the present invention provides a deceptive acoustic target for deceptively guiding a homing vehicle having an acoustic homing function.
The deceptive acoustic target is projected by a projection mechanism from a surface ship equipped with the deceptive acoustic target, and after landing on the water, it floats on the sea surface and emits deceptive acoustic responses and deceptive acoustic emissions corresponding to the active and passive search operations of the homing vehicle. The system is constructed with an operation/deployment structure that allows the transducer/receiver and transmitter to be operated and deployed so as to be suspended in the sea at a predetermined depth.

Next, the present invention will be described in detail with reference to the drawings.

FIG. 2 is a side view showing the structure of a deceptive acoustic target according to the present invention.

The side view shown in FIG. 2 shows the state of the deceptive acoustic target according to the present invention during operational deployment, and shows the transceiver 1,
A cylindrical storage container 11 is configured with a responder transducer 2, a deceptive acoustic transmitter 3, and an ink cable 4.
In addition to the transceiver 1 , it typically accommodates a responder transducer 2 , a deceptive acoustic transmitter 3 and a suspension cable 4 .

In addition, the responder transducer 2 consists of two responder transmitters and a responder receiver 2B, and in addition to this deceptive acoustic target, FIG. 2 also shows a surface ship A equipped with a target projection mechanism G, and a seawater Surface S etc. are also shown.

In the target projection function G, a combination of a deceptive acoustic target, which is entirely stored in the storage container 11, and a propulsion rocket motor is loaded into a cylindrical launch tube, and the propulsion rocket motor is ignited to set the temperature. It flies an acoustic target by deceiving direction and distance and makes it land on water, and is basically a well-known 7ζ ASROC (ASROC + Anti Subma).
rine RUCket) It has a structure almost similar to an anti-submarine rocket launch mechanism. The propulsion rocket motor is designed to separate from the deceptive acoustic target and fall after combustion is complete.

The deceptive acoustic target is moved from the temperature container 11 to the responder transducer 2,
The underwater suspension parts of the deceptive acoustic transmitter 3, ink hanging cable 4, etc. are suspended in the sea.

Such a lower part of the underwater rH is usually stored in the storage chamber 102.
and is kept closed by a lid 10jK. The lid 102 has a removable structure in which the restraining mechanism comes off and falls off when subjected to impact force, and the deceptive acoustic transmitter stored in the storage chamber 102 is removed from the storage container 11 due to the impact when the seawater surface S enters. 3 falls first, followed by the responder transducer 2.

The container 11 after the underwater heavy lower part is lowered in this way has an airtight structure, and its buoyancy is larger than the underwater weight of the entire deceptive acoustic target including the underwater heavy lower part. It is.

Therefore, in such an operational deployment state, the deceptive acoustic target stands still on the sea in a substantially straight line, as shown in FIG.

In such a stationary state, the set depths of the responder transducer 2 and the deceptive acoustic transmitter 3 are both deeper than the shallowest operating depth of the homing vehicle, and the deceptive acoustic transmitter 3 has a substantially cylindrical shape. 3 and responder transducer 2
The distance between the two acoustic Vs is such that the necessary length is ensured so that the two acoustic Vs do not interfere with each other.

The hanging cable 4 connects one end to the transmitter/receiver 1 via a holding fitting.
The other end is connected in a watertight manner to the deceptive acoustic transmitter 3, and is also connected in a watertight manner to the responder transducer 2, forming a transmission line for transmitting and receiving signals. It has a reinforcing wire core to maintain strength during hanging.

The transmitter/receiver l has a built-in battery for power supply, and is a deceptive signal transmitter that transmits a deceptive signal to be supplied to the deceptive acoustic transmitter 3 via the h3 lower cable 4, as well as a responder receiver 2B.
(i) is input via the hanging cable/I/4, and after amplifying it to a predetermined level, it is given a frequency shift corresponding to the amount of Doppler shift and is sent to the responder again via the hanging cable 4. It has a built-in responder transceiver that sends out signals to two people, and the combination of this responder transceiver and the responder transceiver 2 can perform the responder function for the active homing vehicle or the homing vehicle in the active homing operation mode. By combining the signal transmitter with the deceptive acoustic transmitter, it has a deceptive sound source function for the passive homing vehicle or the homing vehicle in the passive homing operation mode.

The deceptive signal transmitted by the deceptive signal transmitter described above has almost faithfully the acoustic characteristics of the noise emitted by the deceptive surface ship, and is sufficiently higher than the noise level of the surface ship.

If a deceptive acoustic target with such a structure and configuration is deployed operationally as shown in Figure 2, it will be able to guide a vehicle in either active homing or passive homing mode, It can serve as a pseudo sound source to trick people into believing it is a ship.

By using the flying type deceptive acoustic target shown in Figure 2, which can be used for both active and passive purposes and can be installed remotely, it is possible to conduct deceptive guidance operations that can almost completely eliminate the risk of self-guidance. However, the basic operation is as follows.

FIG. 3 is a diagram illustrating the basic operation of the deceptive acoustic target of the present invention.

In FIG. 3, a white surface ship A is approaching itself via a detection device such as a sonar. Assuming that the effective homing range of homing vehicle B is approximately 1.5-, homing vehicle B normally searches for the target while traveling in a preset program at a distance of about 2 to 4 boats. is in a state of being.

Now, the first deceptive acoustic target C where the homing vehicle B reaches a distance R1 of approximately 1.5 axes, which is the effective homing range.
1 to a point R7 on the sea surface near the rear of the own ship, the homing vehicle B is guided in the direction of the deceptive acoustic target C1 as shown by the dotted arrow, and the homing vehicle B moves in that direction. In this case, the deceptive acoustic target C transmits a deceptive signal that is higher than the radiation level of the surface ship A, and also serves as a responder for the homing vehicle B that is actively homing.

When it is detected by a sonar device etc. that the homing vehicle B is traveling toward the deceptive acoustic target C1, the second and third deceptive acoustic targets C2 and C11 are projected and remotely installed. . The points P1% and P, at which the second and third deceptive acoustic targets C7 and C8 are remotely installed, are respectively in the traveling direction of the homing vehicle B predicted by the ner device, and P, P, = P, P, =
Let it be R. Here, R1 is shorter than the homing range RIs of the homing vehicle B, that is, about 1.5/an, and is about 1 kR.

Deceptive sounds remotely installed in this way #Target C,,C
, and C8, if the homing vehicle B loses sight of it at the time it passes near the deceptive target C1, then it will be guided in the direction of the deceptive acoustic target C2, and then it will be guided to the deceptive acoustic target C2. After passing through the vicinity without hitting the target, it heads towards the deceptive acoustic target C9. Furthermore, after passing near the deceptive acoustic target C5, the homing vehicle B) makes a turning motion to re-search the aircraft, but the surface shipman has already escaped to a distance far enough from the homing range, In the example, the deceptive acoustic targets C1 and C7 are set to turn off their power so that they stop operating at approximately this time, and this causes the homing vehicle B to use the deceptive acoustic targets C1 and C7 installed at point P3. Research and attack only target C3,
The operation of not losing sight of the target is repeated as shown in Figure 3, and during this time surface ship A is able to avoid the homing vehicle B to a sufficient distance.

The distance that can be avoided in this way is, for example, if the speed of the homing vehicle B is 4Qkt (knots) and the speed of the surface ship is 39kt, then when the homing vehicle passes the deceptive acoustic target C3, the point P .

It is approximately 2.6 axes away from the homing vehicle, and therefore approximately 4.6 axes away from the homing vehicle.

In the above operational example, we consider the worst case in which homing vehicle B passes close to deceptive acoustic targets C and -C, but there is also a case in which it hits one of these deceptive acoustic targets. Of course, this is also possible, and in that case, the homing vehicle B would be damaged harmfully and its homing function would be significantly degraded, thereby completing the deceptive purpose K.

In this way, by using the deceptive acoustic target of the trap of the present invention, it is possible to reliably evade the own ship.

In the above example, the number of deceptive acoustic targets used is 3, which is a typical case. There are 12 pieces, but there are also 4 or 5 pieces.
It is also optional to make it individual.

According to the present invention, the deceptive sound J that deceptively guides the homing vehicle! 1! By equipping the target with a structure that operates while floating on the sea surface after a remote flight landing using a surface ship's projection mechanism, and operates as a stationary acoustic target with a deceptive guidance function for both active and passive homing vehicles. This makes it possible to fundamentally ensure the deceptive guidance of homing vehicles during re-search and attack operations, and has the effect of realizing an easy-to-operate and inexpensive deceptive acoustic target.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the deceptive guidance operation of the conventional towed deceptive acoustic target, Fig. 2 is a side view showing the structure of the deceptive acoustic target according to the present invention, and Fig. 3 is a diagram of the deceptive acoustic g target of the present invention. It is an operation explanatory diagram. 1... Transmitter/receiver, 2... Responder transducer, 2 people... Responder transmitter, 2B...
...Responder receiver, 3...Deceptive acoustic transmitter, 4...Suspension cable, 11...
- Storage container, 101...Storage chamber, 102
······lid. Figure 1 Shiba 2nd ward

Claims (1)

[Claims] In a deceptive acoustic target that deceptively guides a homing vehicle having an acoustic homing function, the deceptive acoustic target is projected by a projection mechanism from a surface ship equipped with a nuclear deceptive acoustic target, flies and lands on water, and then floats on the sea surface while traveling for homing. An operational deployment structure in which a transducer/receiver and a transmitter that perform deceptive acoustic responses and deceptive acoustic radiation in response to the active and passive exploration movements of the body are suspended and maintained under the sea at predetermined depths. A deceptive acoustic target is characterized in that it is equipped with the following and performs blowing guidance to a homing vehicle.