JP2947669B2 - Proximity fuse control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a proximity fuze control device, and more particularly, to a fuze control device mounted on a projectile equipped with a warhead.
The present invention relates to a device for instructing the firing of the ammunition of the warhead when the flying object approaches a target object.

[0002]

2. Description of the Related Art Conventionally, this type of flying object proximity fuse control device projects a radio wave or light wave beam from the flying object,
When a target object enters and passes through the projection beam, a reflected wave from the target object is received to detect the target object, and a signal based on the detection is used to immediately start the detonator or a predetermined delay time. Later, the firing of the ammunition of the warhead was activated. Therefore, depending on the relative positional relationship between the flying object and the target object, the operation may not always be performed in an optimal state (optimally, an ignition timing at which a bullet of a warhead hits the target object).

In a radio-frequency or light-wave type proximity fuze control device that sets the detonation timing using a relative speed signal (with respect to a target object) output from another device mounted on the flying object, It is possible to set the detonation timing for the relative speed, but it is extremely difficult to set the detonation timing for the distance (miss distance) between the target object and the point at which the warhead ram collides. is there. In other words, the time required for the detonation delay of the warhead before exploding by the detonation signal and the time required for the miss distance until the bullet of the warhead scatters and reaches the target are required.

[0004] Therefore, when the target object passes a place relatively far from the flying object, the target object passes before the munition of the warhead reaches the target object, and conversely, the target object passes through the target object. If the projectile is located very close to the flying object, there is an inconvenience that the projectile passes in front of the target object. In other words, a situation occurs in which the target object goes out of the scattered range of the munitions of the warhead, and therefore, there is a disadvantage that the warhead cannot effectively destroy or damage the target object. As a result, it hinders the flying object's ability to defeat the target. In particular, as seen in recent years, the flying object's target for attack is changed from an ultra-high-speed flying object (eg, SSM) to a low-speed object such as a cruising flying object or a rotary wing aircraft. However, there is a problem that it is not possible to transmit an optimal detonation timing signal for defeating each of the relative velocities that are over a wide range up to the target.

[0005] To cope with this, a method of detecting an intruding target object by reducing the inclination angle (direction angle) of a single projection beam in the forward direction, or fixing a plurality of projection beams to the intruding target. A method for detecting an object has been proposed. Further, the conventionally-known proximity fuse control device for a flying object is not operated when mounted on a launch device of an aircraft or a ground base. That is, after the projectile is fired, when the specified acceleration is applied and the projectile reaches a safe distance from the launch point, power is supplied to the proximity fuse control device by the safety release device for the warhead, When the device detects a target object, it uses the speed information output from the target guidance device (information indicating the relative speed with respect to the target object) to send a firing timing signal of the target object to the firing device of the warhead. It has become.

[0006]

The method using a single projection beam fixed at a certain inclination angle has a disadvantage that an effective detection range of an associated angle of engagement with a target object is limited. However, there is an undetectable angle depending on the angle of engagement, and therefore, there is a disadvantage that the warhead cannot effectively destroy or damage the target object.

Further, the method of using a plurality of projection beams in a fixed manner has an advantage that the above-mentioned limited range of the associated angle of engagement can be covered.
Since a projector is required for each beam, the apparatus becomes complicated, and the shape becomes large, which causes a problem in mounting on a flying object. In addition, there is a disadvantage that the capacity of a power supply for a high-output light emitting element such as a high-frequency oscillator or a semiconductor laser and an auxiliary circuit required for the high-power light-emitting element is increased, thereby increasing the shape and dimensions of the entire device including the power supply. There is.

On the other hand, a conventionally known proximity fuze control device uses a projection beam (for example, a light beam) from the initial stage of flight.
Is flying in a state in which the image is projected, there is a problem that it is easy for the other party to find the image and to receive an interference signal (for example, interference light). In particular, in the case of a method of projecting a light beam, since the entire apparatus such as a high-power light-emitting element such as a semiconductor laser and its signal processing circuit is turned on from an early stage of flight, an intruding target object is detected. Therefore, there is a disadvantage that the capacity of the power supply for supplying the flying object to each device is increased, which is a problem.

In addition, since a fan beam of a light wave is projected using a light beam projector (for example, a semiconductor laser) in each quadrant direction for detecting a quadrant of a target object, a large capacity is used for high-output light emission. There is also a problem that a drive power source is required for each quadrant (projector). This is not preferable because it leads to an increase in power consumption. Furthermore, since thermal control of the heat generated by the projection beam semiconductor laser itself is required, as the heat capacity increases, the structural weight increases accordingly, and the shape, size, and weight of the entire device including the drive power supply increase. Disadvantage.

SUMMARY OF THE INVENTION In view of the problems in the prior art, a main object of the present invention is to eliminate an undetectable range for an intruding target object from a very high speed to a low speed, and to set a timing for transmitting a detonation signal to a warhead. It is an object of the present invention to provide a proximity fuze control device that facilitates control, and thus allows a bullet of a warhead to be accurately concentrated on the target object at an optimal timing and reliably destroyed.

Another object of the present invention is to make it difficult for the other party to find and interfere, to reduce power consumption, and to eliminate the possibility of a malfunction during a rear attack. An object of the present invention is to provide a proximity fuse control device. Still another object of the present invention is to provide a proximity fuze control device capable of suppressing unnecessary beam transmission output, improving confidentiality, reducing power consumption and simplifying the device configuration. .

[0012]

According to the present invention, there is provided a flying object having a warhead mounted thereon, the ignition of the ammunition of the warhead being performed when the flying object approaches a target object. A command for capturing and tracking the target object, and indicating a distance between the target object and a relative speed signal indicating a relative speed between the target object and the target object. Target guidance means for outputting a distance signal,
Beam projection for projecting a beam of a radio wave or a light wave in a cone shape at a certain set angle toward the front of the flying object in each of at least four quadrants divided in the entire circumferential direction around the axis of the flying object. Means, a target detector for detecting a reflected wave from the target object with respect to the projected beam, and outputting a detection signal corresponding to a signal intensity for each quadrant, and each of the output detection signals being adjacent to each other. A circuit for comparing the signal with a quadrant signal level, determining a presence quadrant of the target object based on the comparison result, and outputting a presence quadrant detection signal; and instructing the ignition operation based on the presence quadrant detection signal and the relative speed signal. Means for generating a control signal for setting the projection angle of the projection beam based on the relative velocity signal, and an electric signal when detecting that the flying object is flying under predetermined conditions. Means for outputting a power-on signal for instructing power-on, and means for outputting a power-on control signal for instructing power supply based on the relative speed signal and the distance signal in response to the power-on signal, Based on the generated control signal, the projection setting angle of the projection beam is variably controlled with respect to the beam projecting unit, and the direction of the target object is determined with respect to the target detector based on the power-on control signal. A proximity fuze control device is provided which controls to operate only a detection system.

In the above proximity fuze control device, when the target guiding means further outputs an azimuth angle signal and an elevation angle signal indicating the position of the target object,
Means may be provided for converting the azimuth angle signal and the elevation angle signal into a quadrant control signal indicating the arrival quadrant direction of the target object in response to the power-on control signal. In this case, the control signal is generated based on the converted quadrant control signal and the relative speed signal, whereby power is supplied to the target detector only to the detection system corresponding to the direction in which the target object exists. Will be

Further, in the above proximity fuse control device,
When the target guiding means further outputs a target direction angle signal indicating the direction angle at which the target object is present and the own speed signal indicating the speed of the flying object, the target direction angle signal, the own speed signal, Means may be provided for determining whether the attack is a forward attack or a backward attack based on the relative speed signal. In this case, the firing operation of the ammunition of the warhead is instructed based on the forward / rearward attack instruction signal indicating the result of the determination, the existence quadrant detection signal, and the relative speed signal.

Further, the above-mentioned proximity fuse control device may include means for controlling an effective detection distance of a target object with respect to a target detector based on an azimuth angle signal, an elevation angle signal, and a relative speed signal.

[0016]

According to the above-described structure, when detecting a target object entering a projection beam of a radio wave or a light wave projected toward a front of a flying object, and transmitting an explosion signal to a warhead based on the detection, The beam projection setting angle is variably controlled in accordance with the penetration speed of the target object (that is, the relative speed with respect to the target object), and the firing operation of the ammunition of the warhead (that is, the timing of generating the detonation signal) is controlled based on the angle. Like that.

Therefore, even if a target object over a wide range from a very high speed to a low speed enters the projection beam, the projection angle of the beam can be appropriately switched in accordance with the penetration speed, as seen in the conventional type. It is possible to eliminate an undetectable range. In addition, by controlling the timing of sending the detonation signal to the warhead in accordance with the penetration speed of the target object, it is possible to always accurately concentrate the munitions of the warhead on the target object at the optimal timing and to surely destroy the target object. Becomes possible.

When the flying object is flying under predetermined conditions, the power supply operation is controlled by a power-on signal, and power supply is instructed in response to the control based on the relative speed signal and the distance signal. On the basis of this command, power is supplied to the target detector only to the detection system corresponding to the direction in which the target object exists. As a result, the operation time of the present apparatus can be significantly reduced, and thereby the power consumption can be reduced. In addition, since the power supply to this device is started immediately before the meeting with the target object, there is an advantage that it is hard to be found by the other party and hard to be disturbed. Since the configuration in which the projection angle of the beam is changed in accordance with the speed is adopted, a projector for each beam as in the related art is not required, and the configuration of the apparatus is simplified. this is,
It also contributes to reducing power consumption.

Further, when a forward / rearward attack determining means is provided, the firing timing can be controlled so that the munitions of the warhead hit the fragile area of the target object. It can be improved. Further, when changing the projection set angle of the projection beam based on the control signal, the variable control of the effective detection distance to the target object is performed, and when the transmission output of the projection beam is also changed, unnecessary It is possible to suppress the beam transmission output, thereby improving confidentiality.

The details of the other structural features and operations of the present invention will be described with reference to the accompanying drawings and embodiments described below.

[0021]

FIG. 1 shows a configuration of a proximity fuse control device according to an embodiment of the present invention. The proximity fuze control device of this embodiment is mounted on a projectile 40 (see FIG. 3) equipped with a warhead, and includes a proximity fuze device 10, a target guidance device (for example, a homing device) 20, and a safety release signal generator 70. ing. The proximity fuze device 10 includes, as main components, a radio wave or light wave type target detector 11, a beam setting controller 15, a forward / backward attack determiner 16, and a power supply controller 61.
And a quadrant converter 62 for controlling power-on using various control signals (described later) output from the target guidance device 20 and invading at a wide range of speeds from ultra-high speed to low speed. The target object 30 is reliably detected, and the bullets of the warhead are accurately concentrated and hit at the optimum timing. In addition, the proximity fuze device 10
As shown in FIG. 3, the target object 3
0 plume (exhaust gas) 31 or tail pipe 32
It also has a function of avoiding the influence of the above, thereby preventing a malfunction.

The target guiding device 20 performs control for capturing and tracking the target object 30. The target guiding device 20 calculates a relative speed signal VC indicating a relative speed with respect to the target object, and a speed of the flying object. Instructed own speed signal VM and target object 3
A target direction angle signal θ indicating a direction angle where 0 exists, a target direction indicating signal (azimuth angle signal AZ and elevation angle signal EL) indicating a position of the target object, and a distance between the target object Is output. These signals are supplied to the detonation timing generator 14, the beam setting controller 15, the forward / backward attack determiner 16, the power supply controller 61, and the quadrant converter 62 in the proximity fuse device 10.

The target detector 11 used in the present embodiment has a target object 30 which enters into any one of at least four quadrants divided in all directions around the axis of the flying object. The direction can be detected. Here, an example in which the apparatus is divided into four quadrants (quadrants <1> to <4> in FIG. 6) will be described. Regarding this technology, for example, Japanese Patent Application No. 63-176484 (Japanese Patent Application Laid-Open No. 2-25700) or Japanese Patent Application No. 63-20936 by the present applicant.
No. 5 (JP-A-2-59690).

The target detector 11 emits a reflected radio wave or a reflected light (incoming beam) AR from the target object 30 which has entered the beam AS projected from the beam projecting unit 17 (transmitting antenna or light beam projector 17a). Input unit 18
(Receiving antenna or light receiver 18a),
A level corresponding to the signal intensity is generated for each quadrant and compared with a predetermined threshold level, and detection signals D1 to D4 are output for each quadrant based on the comparison. These detection signals D1 to D4 are sent to the signal comparator 12. Further, the target detector 11 generates an instantaneous detection signal at the time of detecting the target object 30 as a trigger pulse signal SL, and sends it to the quadrant determiner 13 and the detonation timing generator 14.

The signal comparator 12 is composed of a commonly used comparator circuit, compares the signal levels of adjacent quadrant detection beams (detection signals D1 to D4), and determines the result in the form of a binary signal in a quadrant. To the container 13. The quadrant judging unit 13 inputs a trigger pulse signal SL from the target detector 11 (a built-in correlation filter module in the case of the radio wave system, and a built-in optical receiver in the case of the light wave system) as a latch signal, The binary signal output from the signal comparator 12 is held in response to the latch signal SL, and the existence quadrant of the target object 30 is determined according to the held state. The determined result is sent to the detonation timing generator 14 as a presence quadrant detection signal QD.

The detonation timing generator 14 includes the target detector 1
1, the relative speed signal VC from the target guidance device 20 and the forward / backward attack instruction signals VH, V from the forward / backward attack determiner 16 based on the trigger pulse signal SL supplied from
By using T (described later), the presence quadrant detection signal QD from the quadrant determiner 13 is controlled so that the bullet of the warhead surely hits the predetermined dead point of the target object 30, and the ignition timing signal of the target object existence direction is provided. To the warhead.

The beam setting controller 15 controls the target guiding device 2
Based on the relative velocity signal VC supplied from 0, a beam setting control signal VBC used for setting a projection beam angle (pattern formation, beam width) corresponding to the association relative velocity is generated, and the target detector 11 and the beam projection unit 17 are generated. The beam is transmitted to the phase shifters 17b and 18b of the beam input unit 18. The beam setting control signal VBC has a target object speed divided into a plurality of sections, for example, Mach 1.5 or less, 1.5 to
For each section of 2.5, 2.5 to 4.0 and 4.0 or more, the beam inclination angle α is 80 °, 70 °, 60
It is transmitted in the form of control signals corresponding to ° and 50 °.

The forward / backward attack determiner 16 uses the relative speed signal VC from the target guidance device 20, the own vehicle speed signal VM, and the target direction angle signal θ to cause the own device to attack the target object 30 forward or forward. It has a function to determine which is a backward attack. For example, in the case of a fighter jet in a light wave type target detector, for example, in the case of a rearward attack as shown in FIG.
Based on the relative speed signal VC based on the pulse signal SL, the time (Tp, Tt) for passing through each position of the plume 31 and the tail pipe 32, and the time (Tc) until the dead point P of the target object 30 is reached, The bullet of the warhead is the target object 30
The ignition timing signal (referred to as ΔT) is controlled so as to reliably strike, and an ignition timing signal in the direction in which the target object exists is sent to the warhead (for example, ΔT = (Tp + Tt) +
Tc).

Similarly, in the case of a forward attack, the trigger
Based on the relative speed signal VC based on the pulse signal SL and the time from when the target object 30 reaches the dead point P from the front, a detonation timing signal is generated so that the bullet of the warhead surely strikes the target object 30. Is controlled and an ignition timing signal in the direction in which the target object exists is sent to the warhead (for example, ΔT = T
c).

Here, the determination of the forward or rearward attack is made based on the relative speed signal VC, the own speed signal VM, and the target direction angle signal θ.
Is performed as follows. (VC) ≧ (VM) × cos θ [Forward Attack] (VC) <(VM) × cos θ [Back Attack] The result of this determination is defined as a forward attack instruction signal VH or a rear attack instruction signal VT, respectively.
Sent to

This forward / rearward attack instruction signal VH / VT
In view of the fact that the position of the fragile area W of the target object 30 differs between the distance from the front and the distance from the rear as shown in FIG. It is used to control the firing timing signal of the detonation so that the projectiles strike. The beam projecting unit 17 and the beam input unit 18 project the beam in a cone shape toward the front of the flying object in each of the four quadrants divided in the entire circumferential direction around the axis of the flying object 40, and (Projection beam AS) In addition to the normal function of receiving the reflected wave from the target object 30 with the arrival beam AR, the projection beam AS is transmitted to the normally used antenna element 17a based on the beam setting control signal VBC from the beam setting controller 15. The projection beam angle is adjusted by using the phase shifter 17b that makes the feeding phase of the target object 3 variable.
Beam setting angles α ₁ , α ₂ ,... Appropriate for the penetration speed of 0
.. (See FIG. 2).

For example, when the light wave method is used as the target detector 11, the beam is changed to a predetermined beam inclination angle α _i by an optical system lens of a light beam projector. This makes it possible to easily control the detonation timing in accordance with the relative speed VC with respect to the invading target object 30. Further, the beam setting control signal VBC is output from the target detector 1
1 and transmitted to a high-frequency transmitter (in the case of a radio wave method) or a light beam driver circuit (in the case of a light wave method), and is used for variably controlling the beam projection output in accordance with the beam setting angle α _i . As shown in FIG. 2, this beam projection output is determined by changing the effective detection distances R ₁ , R ₂ ,... As the angles increase in accordance with the beam setting angles α ₁ , α ₂ ,. The control is performed so that only a target object which is reduced in a short time and enters an effective miss distance (MD) can be detected and unnecessary transmission output is not output. This contributes to improvement of confidentiality and reduction of power consumption.

Further, the beam setting control signal VBC includes not only the beam transmission output but also the transmission pulse, the target detector 11
It is also used to variably control the effective detection distance R _{i according} to the modulation frequency or the like. For example, the aforementioned Japanese Patent Application No. 63-176
No. 484 (JP-A-2-25700) discloses a target detector in which a beam setting control signal is input to a voltage control generator in the detector, and a pseudo signal is set in correspondence with a beam setting angle (α _i ). The clock speed of the random code (PN) generator is variably set. For example, when the miss distance (MD) is 10 m, the effective detection distance (R _i ) of each beam is about 10.2 m when α = 80 °, and α = 5.
At 0 °, the clock speed is set to correspond to about 13.2 m.

The power supply controller 61 includes a safety release signal generator 7
0 in response to the power-on signal P1 from the target guidance device 2
Based on the distance signal SR from 0 and the relative speed signal VC, a power-on control signal P2 is generated when the distance reaches a preset distance immediately before the target meeting (actually, a voltage set value corresponding to the distance). This power-on control signal P2 is
Since there is a range in the relative speed with respect to the target object 30 (for example, target speed: Mach 0.9 to 4.0), it is generated as follows.

As shown in FIGS. 4 and 5, first, an adder 41 adds a voltage value corresponding to the relative speed signal VC to a voltage value of the distance signal SR, and then a comparator 42 adds the added voltage. The value is compared with a predetermined voltage value Vth.
Based on this comparison, when the output voltage value of the adder 41 is lower than the predetermined voltage value Vth, a power-on control signal P2 is generated, whereby the power supply is started.

The quadrant converter 62 responds to a power-on control signal P2 output from the power controller 61 to output a target direction instruction signal (azimuth angle signal AZ and elevation angle signal EL) from the target guiding device 20. The signal is converted into a signal indicating the direction of the arrival quadrant of the target object 30, and is sent out only to the target existence quadrant system in the beam setting controller 15 as the control signal QC of the target arrival quadrant system.

As shown in FIG. 6, the target direction indicating signals AZ and EL have positive voltage values in the right direction (+ AZ) with respect to the azimuth angle (AZ) when viewed from the rear with the axis of the flying object 40 as the center. And the left direction (−AZ) is a negative voltage value, and the elevation angle (EL) is an upward direction (+ E
L) is expressed as a positive voltage value, and the downward direction (−EL) is expressed as a negative voltage value. The azimuth angle signal AZ and the elevation angle signal EL each have a voltage value proportional to the angle as shown in FIGS. 7A and 7B.

As shown in FIG. 6, the azimuth angle (A
Z) and the elevation angle (EL) are combined as positive and negative signals, and as a signal indicating a quadrant where the target object 30 is present, four types of quadrant control signals QC are provided for each quadrant <1> to <4>. Is output to the beam setting controller 15. For example, as shown in FIG.
When the azimuth angle signal (−AZ) is present in the vicinity of 1> and <2>, the azimuth angle signal (−AZ) is generated by a commonly used comparator circuit in the vicinity of 0 ° of the azimuth angle as shown in FIG. to set the voltage threshold Vth _1, is a free state signal (i.e. 0V) when the lower voltage value.

The following table shows the relationship between the combination of the positive / negative polarity of the target direction indicating signal and the output signal of the quadrant converter. Table target direction indication signal Quadrant converter output signal Azimuth angle Elevation angle (AZ) (EL) <1><2><3><4> +-ON OFF OFF OFF--OFF ON OFF OFF-+ OFF OFF ON OFF + + OFF OFF OFF ON ON 0-ON ON OFF OFF-0 OFF ON ON OFF 0 + OFF OFF ON ON + 0 ON OFF OFF ON 0 0 ON ON ON ON As shown in FIG. > And <2>, the azimuth angle signal AZ has no voltage value, and the control signals of the quadrants <1> and <2> are formed only by the negative voltage signal of the elevation angle signal EL. Is done. For a target object arriving near an adjacent quadrant boundary, only the detection system of the target detector 11 corresponding to both quadrants sandwiching the boundary is operated.

In this embodiment, the azimuth angle signal AZ and the elevation angle signal EL output from the target guidance device 20 are used as the target direction instruction signals. However, if the target guidance device can output a quadrant signal. Alternatively, the quadrant signal may be used as a control signal indicating a target direction. According to the proximity fuse control device of the present embodiment configured as described above, the following advantages can be obtained.

(1) The tilt angle of the projection beam optimal for the association speed with the intruding target object 30 is switched and set in accordance with the relative speed signal VC from the target guiding device 20, so that the intruding target object covers a wide range from ultra-high speed to low speed. In contrast to this, the undetectable range caused by the projection beam tilt angle as seen in the conventional type is eliminated, and the timing of the detonation signal is easily set, thereby enabling the bullet of the warhead to reach the target at the optimal timing. It is possible to accurately concentrate on an object and to surely destroy it.

Further, the transmission output and the effective detection distance are variably controlled with respect to the difference in the detection distance due to the inclination of the projection beam angle, thereby improving the effectiveness of the detection range and preventing unnecessary transmission output. The confidentiality can be improved. (2) By switching and setting the inclination angle of the projection beam in accordance with the relative velocity VC with respect to the target object 30, the beam projection is performed as compared with the conventional method of detecting an intruding target using a plurality of fixed projection beams. Since the configuration of the section (antenna) does not require a projector for each beam and does not have a complicated configuration, there is an advantage that its shape and dimensions are reduced and mounting on a flying object becomes easy.

Further, as compared with the conventional method using a plurality of fixed projection beams, it is possible to reduce the capacity of a high-power light-emitting element such as a high-frequency oscillator or a semiconductor laser and a supply power supply necessary for an accessory circuit thereof. In addition, power consumption can be reduced. Therefore, there is an advantage that the shape and dimensions of the entire device including the power supply are reduced. (3) Since the apparatus is started to emit a projection beam immediately before meeting with the target object 30 by various control signals from the target guiding apparatus 20, it is difficult for the other party to find out and to prevent interference. It can be hard to receive.

(4) Immediately before the meeting with the target object 30, the target detector 1 corresponding to the direction of the intruding target object exists.
Since only one detection system is activated,
Power consumption can be significantly reduced. In particular, in the case of a proximity fuse control device using a semiconductor laser that requires a high-output light beam projector, a large-capacity drive power supply is required, and the effect of reducing power consumption is great.

(5) With respect to a heating element such as a semiconductor laser, the conventional structure has a disadvantage that the structural weight is large for heat control. However, by shortening the operation time, thermal control measures are simplified. Accordingly, the shape, size, and weight of the device can be reduced, and the weight can be reduced. (6) By controlling the direction of the target detection quadrant using the information on the direction in which the target object 30 is output from the target guidance device 20, the interference wave of the light wave (for example, Reflected light due to surrounding clouds, fog, etc., sunlight, reflected light from the ground surface, etc.) can be avoided. This can reduce the occurrence of momentary "saturation" states or malfunctions due to unwanted signals,
There is an advantage that the quadrant direction of the target object can be reliably detected.

(7) It is determined whether the attack is a forward attack or a rearward attack, and based on the result, the firing timing is controlled so that the munitions of the warhead strike the fragile area of the target object 30. Therefore, it is possible to improve the shooting-down efficiency of the target object.

[0047]

As described above, according to the present invention, it is impossible to detect a target object in a wide range from an ultra-high speed to a low speed by appropriately switching the inclination angle of the projection beam according to the penetration speed of the target object. Thus, it is possible to easily control the timing of sending out the detonation signal to the warhead, and to accurately concentrate the munitions of the warhead on the target object at the optimum timing, thereby reliably destroying the target object.

Further, since it is configured to supply power only to the detection system corresponding to the direction of the quadrant of the target object and to operate it just before the meeting with the target object, it is difficult for the other party to discover the system. And less likely to be disturbed,
The power consumption can be greatly reduced, and the possibility of a malfunction as seen in the conventional type at the time of a backward attack can be eliminated.

Furthermore, it is possible to suppress unnecessary beam transmission output to improve confidentiality, to reduce power consumption and to simplify the device configuration.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a proximity fuse control device according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state of beam projection and beam switching from a beam projection unit in FIG.

FIG. 3 is a diagram illustrating a relative positional relationship during a rearward attack.

FIG. 4 is a circuit diagram showing a configuration example of a power supply controller in FIG. 1;

FIG. 5 is a diagram for explaining the operation of the power supply controller of FIG. 4;

FIG. 6 is a diagram for explaining the contents of a target direction instruction signal.

FIGS. 7A and 7B are graphs each showing an operation level of a quadrant converter with respect to a target direction indicating signal.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Proximity fuse device 11 ... Target detector (radio wave method or light wave method) 12 ... (Quadrant detection beam) signal comparator 13 ... Quadrant detector 14 ... Explosion timing generator 15 ... Beam setting controller 16 ... Forward / backward attack Judgment device 17 ... Beam projection unit 18 ... Beam input unit 20 ... Target guidance device 30 ... Target object 40 ... Flying object 61 ... Power controller 62 ... Quadrant converter 70 ... Safety release signal generator AZ ... Azimuth angle signal D1 to D4 ... Target detection signal EL ... Elevation angle signal P1 ... Power-on signal P2 ... Power-on control signal QC ... Quadrant control signal QD ... Presence quadrant detection signal R _i ... Effective detection distance SL ... Target detection instruction signal (trigger pulse signal) VBC ... beam setting control signal VC / ... relative speed signal VM ... ship speed signal VH VT ... front / rear attack instruction signal alpha _i ... projection beam set Degree (angle of inclination) θ ... target direction angle signal

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-4-13100 (JP, A) JP-A-4-254199 (JP, A) JP-A-4-340100 (JP, A) JP-A-2- 25700 (JP, A) JP-A-2-59690 (JP, A) JP-A-4-6399 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F42C 13/04

Claims (5)

(57) [Claims] 1. A device mounted on a projectile equipped with a warhead and instructing the firing operation of ammunition of the warhead when the projectile approaches a target object (30), wherein the target object is captured and A target guidance unit for performing control for tracking and outputting a relative speed signal (VC) indicating a relative speed to the target object and a distance signal (SR) indicating a distance to the target object ( 20) and a beam of a radio wave or a light wave at a certain angle (α _i ) toward the front of the flying object in each of at least four quadrants divided in all directions around the axis of the flying object. Beam projection means (17) for projecting the light beam in a cone shape, a detection signal (D1) corresponding to the signal intensity for each quadrant, detecting a reflected wave from the target object with respect to the projected beam.
To D4), and each of the output detection signals is compared with an adjacent quadrant signal level, and the existence quadrant of the target object is determined based on the comparison result. A circuit (12, 13) for outputting a signal (QD); a means (14) for instructing the ignition operation based on the presence quadrant detection signal and the relative speed signal; Means for generating control signal (VBC) for setting projection angle (15)
Means (70) for outputting a power-on signal (P1) for instructing power-on when detecting that the flying object is flying under predetermined conditions; and responding to the power-on signal, Means (61) for outputting a power-on control signal (P2) for instructing power supply based on the speed signal and the distance signal, and the projection beam to the beam projection means based on the generated control signal. Variably controls the projection set angle (α _i ) of the target object, and controls the target detector to operate only the detection system corresponding to the direction in which the target object exists based on the power-on control signal. Proximity fuse control device. 2. The proximity fuze control device according to claim 1, wherein said target guidance means further outputs an azimuth angle signal (AZ) and an elevation angle signal (EL) indicating the position of the target object. Means (6) for converting the azimuth angle signal and the elevation angle signal into a quadrant control signal (QC) indicating a direction of arrival of the target object in response to the power-on control signal.
2) generating the control signal based on the converted quadrant control signal and the relative speed signal, thereby supplying power to only the detection system corresponding to the direction in which the target object exists with respect to the target detector. A proximity fuse control device for supplying. 3. The target guiding means (20) further includes a target direction angle signal (θ) indicating a direction angle at which the target object is present and a own-vehicle speed signal (V) indicating a speed of the flying object.
The proximity fuze control device according to claim 1 or 2, which outputs M), based on the target direction angle signal, the own-vehicle speed signal, and the relative speed signal, determines whether it is a forward attack or a rearward attack. Means (16) for outputting a forward / rearward attack instruction signal (VH, VT) indicating the result of the determination, the output forward / rearward attack instruction signal, the existence quadrant detection signal, and the relative speed. A proximity fuze control device, wherein the ignition operation is commanded based on a signal. 4. The proximity fuse control device according to claim 2, wherein the effective detection distance (R _{i) of the} target object with respect to the target detector is determined based on the azimuth angle signal, the elevation angle signal, and the relative speed signal. (B) a means for controlling the proximity fuze. 5. The proximity fuze controller according to claim 2, wherein the target detector outputs a target detection instruction signal (SL) when the target object is detected by the projection beam, and the target detection instruction signal. A proximity fuze control device, wherein the ignition operation is commanded based on the presence quadrant detection signal and the relative speed signal.