JPH0827160B2 - Radio fuse for land mines - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mine radio fuze which can determine the position of a target in the vicinity of a mine and can direct the firing or the firing direction to the target regardless of the weather.

[0002]

2. Description of the Related Art A conventional mine fuze uses a treading type or a magnetic type, and detects only a target directly above the mine to ignite the detonator or detonator of the mine.

[0003]

In the conventional mine fuze, it is necessary to push the ignition switch by the crawler track etc. in the treading method, and in the magnetic method the magnetism of the target is used. You need to have a goal. Therefore, it has no effect on air targets, and it is necessary to install a large number of land mines in order to increase the lightning strike rate even for ground targets.

In view of the above points, the present invention can attack the target even if the target is not directly above the land mine, as long as it is in the vicinity, the position of the target can be calculated and the firing or firing direction can be aimed and attacked. It is an object of the present invention to provide a mine radio fuze with a significantly wide range and improved lightning strike rate.

[0005]

In order to achieve the above object, a radio wave fuse for a land mine of the present invention comprises a case made of a material that allows radio waves to pass therethrough, and a warhead housed in the case and having a specific force direction. And a direction motor for changing the direction of the warhead and an elevation motor for changing the elevation angle, a first variable beam antenna mechanism arranged in the case for changing the beam in the direction and a beam for the elevation direction. Strange
A second variable beam antenna mechanism for reduction, and a transmission and reception control system having a transmitter and a receiver, the first variable beam antenna mechanism includes a first radiator disposed vertically within the case, A plurality of first waveguides, which are arranged around the first radiator in parallel with the first radiator and function effectively only when selected; The wave direction of the beam is changed by switching the selected and effectively functioning wave devices, and the second variable beam antenna mechanism includes a second radiator horizontally arranged in the case, The second radiator around the second radiator.
A plurality of second waveguides that are arranged in parallel with the radiator of 1 and that function effectively only when selected.
A selected one of the waveguides and is intended for changing the direction of the beam by switching the one that functions effectively, the transmission and reception
The signal control system uses the first and second variable beam antenna mechanisms and sequentially switches the selected and effectively functioning ones of the plurality of first and second directors to generate beams. Radio waves are transmitted and received at a specific frequency while changing direction, signal processing is performed based on the radio waves returned from the target to determine the direction and elevation angle of the target, and the direction motor and
And the elevation angle motor are driven to target the direction of the warhead's power.
And outputs a firing or firing signal
It is characterized in that that. Also, the transmission / reception control is performed so that the radio wave is not emitted to the outside when the radio wave of the specific frequency is received from the outside before the transmission of the radio wave of the specific frequency.
Gate means for preventing radio wave interference between land mines may be provided in the control system. Further, the transmission / reception control system may include a starting unit that detects the approach of a target with an acoustic sensor and enables transmission and reception of radio waves at the specific frequency.

[0006]

In the mine radio fuze of the present invention, pulsed radio waves are transmitted while changing the beam directions of the first and second variable beam antenna mechanisms, and a target (for example, a tank moving on the surface of the earth) is transmitted. The target direction, elevation angle and distance are calculated by the transmission / reception control system based on the radio waves returned from the vehicle and the flying body such as a helicopter freely moving in the three-dimensional space, and the medicine is filled. A warhead having a specific force direction (for example, a directional warhead such as a shaped bullet warhead) is fired or fired toward a target. As a result, the attack range can be significantly widened and the lightning strike rate can be improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a land mine radio fuze according to the present invention will be described below with reference to the drawings.

FIG. 1 is an external view of the embodiment, and FIG. 2 shows a circuit configuration of the embodiment. In these figures, 27 is a case made of a material that allows radio waves to pass through, and the warhead 24 filled with a medicine inside has a direction (horizontal direction) and an elevation direction.
It is rotatably supported (vertically) . That is,
The power direction (fire or firing direction) of the warhead 24 can be set to any direction. The direction motor 16 and the gear 25 that meshes with the small gears of the motor rotation shaft change the direction ( direction in the horizontal plane) of the warhead 24 (so that the warhead 24 rotates in the horizontal plane integrally with the gear 25 ). The elevation angle motor 17 is for changing the elevation angle of the warhead 24. The warhead 24 is
Use a directional warhead with a specific power direction such as a round warhead.
Can be used.

Further, in the case 27, two sets of variable beads are provided.
Beam antenna mechanism is provided. The first set is for determining the target direction. The first radiator 10 is fixed so as to be vertically arranged at the center of the lower part of the case, and a plurality of directors 12 arranged in parallel therewith (see FIG. 1). Around radiator 10
The second set is for determining the target elevation angle, and the second radiator 11 is mounted horizontally inside the upper part of the case so as to move integrally with the warhead 24 and is parallel to this. A plurality of directors 12 are arranged so as to move integrally with the warhead 24 (as shown in FIG.
It is composed of and. Here, one of the radiators 10 and 11 is selected by the switch 9, and one of the directors 12 corresponding to the radiator selected by the switch 19 is selected. One of them can be selected to configure a Yagi antenna and change the direction of its beam. When not selected, each director 12 is divided into several lines and does not function as a director.
When selected by 9, it becomes a single line and functions effectively as a waveguide. Variable of those two sets
Beam antenna mechanism searches and tracks moving targets
With function.

A transmission / reception control system 26 including the transmitter 6, the receiver 13, the computer 15 and the like shown in FIG. 2 is arranged in a lower position of the gear 25 in the case 27. As shown in FIG. 2, the transmission / reception control system 26 includes an acoustic sensor 1 for detecting a target approaching, a start switch 2 which is turned on when the acoustic sensor 1 detects a target approaching, and a transmitter 6. An oscillator 3 for generating a pulse signal for interrupting the continuous wave, a gate 4 controlled to be opened and closed by a computer 15, a delay device 5 for delaying the pulse signal of the oscillator 3 for a predetermined time, and a gate 4 opened. It further comprises a transmission gate 7 which is sometimes opened and closed by a pulse signal from the oscillator 3, and a circulator 8 which sends a transmission signal passing through the transmission gate 7 to a switch 9 and gives a reception signal from the switch 9 to a reception gate 14. are doing. The electric detonator 18 is provided on the side of the warhead 24, is for firing or firing the warhead 24, and is operated by a firing or firing signal of the computer 15. In addition, the gate 4 is a
It can function as a gate unit for preventing wave interference.
Also, it is desirable that the acoustic sensor 1 be omnidirectional.
This acoustic sensor 1 and start switch 2 are
It constitutes a startup means that enables the transmission and reception of radio waves in a number
It

The operation for changing the land mine radio fuze according to the above embodiment from the non-arming state to the arming state is performed by a manual operation or the like.

In the structure of the above embodiment, when the acoustic sensor 1 is activated at the same time as arming and the target approach is detected by the acoustic sensor 1, the activation switch 2 is activated based on the detection output of the acoustic sensor 1. , By this, oscillator 3,
The transmitter 6, the receiver 13, and the computer 15 are activated.

First, the computer 15 closes the gate 4 to prevent radio waves from being emitted into the space, and the first and second
The incoming radio wave is confirmed by the receiver 13 through the two sets of antenna mechanisms composed of the radiators 10 and 11 of FIG. In consideration of the case where a land mine in which a large number of radio waves for land mines are mounted is installed in a small laying area, the reflected wave from the target moving target is reflected by the receiver 13 before transmitting the radio wave. This is because it has a function of avoiding mutual radio wave interference by checking whether radio waves having the same frequency as are received.

As a result of checking the incoming radio wave by the receiver 13 before transmitting the radio wave, if there is no output of radio wave impression in each direction and elevation angle, the computer 15 opens the gate 4 and transmits the pulse signal of the oscillator 3. It is applied to the gate 7, and the continuous wave of the transmitter 6 is interrupted by the transmission gate 7.

At this time, one of the radiators 10 and 11 is selected by the switch 9, and one of the radiators 12 corresponding to the selected radiator is selected by the switch 19 (when not selected, the waveguide is selected). The container 12 is divided into several lines and becomes one line when selected by the switch 19) to form a Yagi antenna having a directional beam in a specific direction. Then, by switching the radiators 10 and 11 and sequentially switching the director 12 corresponding to the selected radiator, the directional beam is directed in the direction of 360 ° and the elevation angle of less than 180 °. Can be scanned.

Radio waves of a specific frequency are repeatedly transmitted and received while changing the beam of the two sets of variable beam antenna mechanism consisting of the radiators 10 and 11 and the director 12, and as a result, the reflected wave from the target is received. Then, the reflected wave from the target within a certain distance is applied to the receiver 13 through the reception gate 14 which opens with a certain time delay from the transmission by the signal of the delay device 5. The receiver 13 mixes the signal of the transmitter 6 as the output of the local oscillator with the received radio wave and extracts only the signal from the moving target. Based on this signal, the computer 15 determines the direction and the elevation angle (the computer recognizes the connection state of the switches 9 and 19 to determine the direction and the elevation angle, and also recognizes the signal strength corresponding to the connection state. ), The direction motor 16 and the elevation motor 17 are driven, and the warhead 24
An ignition or firing signal is output to the electric detonator 18 when the direction and the angle of elevation coincide with the target. It should be noted that an ignition or firing signal is issued.
The timing to apply is preset on the computer 15 side
It detects that the target has entered the attackable space area
Or when the closest position of the target is detected.

[0017]

As described above, according to the radio wave fuse for a land mine of the present invention, the position of the target can be determined and the firing or firing direction of the warhead can be determined as long as the target is not directly above the land mine but is in the vicinity. The target can be attacked toward the target, the attack range can be remarkably widened, and the lightning strike rate can be improved. It is also possible to have a function of preventing mutual interference of radio wave fuzes for land mines by receiving the presence / absence of presence of radio waves of the same frequency before transmitting radio waves.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an external appearance and an internal structure of an embodiment of a land mine radio fuze according to the present invention.

FIG. 2 is a block diagram showing a circuit configuration of an example.

[Explanation of symbols]

 1 Acoustic Sensor 2 Start Switch 3 Oscillator 4 Gate 5 Delay Device 6 Transmitter 7 Transmission Gate 8 Circulator 9,19 Switch 10, 11 Radiator 12 Waveguide 13 Receiver 14 Reception Gate 15 Computer 16 Direction Motor 17 For elevation angle Motor 18 Electric detonator 24 Warhead 25 Gear 26 Transmission / reception control system 27 Case

Claims (3)

[Claims] 1. A case made of a material that allows a radio wave to pass therethrough, and a warhead housed in the case and having a specific force direction.
A direction motor for changing the direction of the warhead and an elevation motor for changing the elevation angle, a first variable beam antenna mechanism arranged in the case for changing the beam in the direction and changing the beam in the direction of elevation. A second variable beam antenna mechanism and a transmission / reception control system having a transmitter and a receiver, wherein the first variable beam antenna mechanism has a first radiator vertically arranged in the case; A plurality of first waveguides, which are arranged around the first radiator in parallel with the first radiator and function effectively only when selected. The second variable beam antenna mechanism includes a second radiator horizontally arranged in the case, and a second radiator which is arranged in the case. 2 release A plurality of second directors arranged in parallel with the second radiator around the container and functioning effectively only when selected, and selecting from the plurality of second directors. The beam transmitting and receiving control system uses the first and second variable beam antenna mechanisms to change the direction of the beam by switching the ones that are effectively operated. By sequentially switching the selected and effective ones of the directors, the radio waves are transmitted and received at a specific frequency while changing the direction of each beam, and signal processing is performed based on the radio waves returned from the target to determine the direction and direction of the target. Determine the elevation angle and use the
The power of the warhead by driving the motor
Directs the target and outputs a firing or firing signal
Radio fuse for land mines characterized by being a thing. 2. Gate means for preventing radio wave interference between land mines in the transmission / reception control system so that the radio wave is not emitted to the outside when the radio wave of the specific frequency is received from the outside before the transmission of the radio wave of the specific frequency. The mine radio fuse according to claim 1, further comprising: 3. The mine radio fuze according to claim 1, wherein the transmission / reception control system is provided with a starting means for detecting approach of a target by an acoustic sensor to enable transmission / reception of radio waves at the specific frequency.