JPH10176900A - Proximate fuse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To explode a warhead of a missile in predetermined timing in response to a ralative speed and a distance between the missile and a target. SOLUTION: A relative speed signal 11 for transmitting a relative speed between and a target detected by a seaker 1 is sent to a beam switching circuit 2, and a beam of a sensor 4 is switched to a beam having an inclination of a directivity center suitable for the relative speed with an output of the switching circuit 2, and further a transmission signal 19 is sent from the sensor 4 in the direction of the beam, and a reflection signal 20 reflected on and returned from the target is received by the sensor 4. The output of the sensor 4 is sent to a target detection circuit 5, an output of which is sent to a distance detection circuit 6 where an ignition timing estimation circuit 7 sends to the ignition circuit 8 a distance signal 16 from the distance detection circuit 6 and an ignition timing signal in response to the relative speed signal 11 to explode a warhead 9 of the missile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a proximity fuse,
In particular, the present invention relates to a proximity fuse that can change the firing timing of a warhead of a flying object.

[0002]

2. Description of the Related Art In a conventional proximity fuse, a relative speed between a flying object and a target is measured by a seeker disposed on the flying object, and a trajectory mounted on the flying object at a predetermined timing corresponding to the relative speed is measured. Had been detonated. The applicant of the present application
In Japanese Patent Publication No. 157499, a proximity fuse using this principle is proposed. Further, the present applicant has disclosed Japanese Patent Application Laid-Open No. 5-118.
In Japanese Patent Publication No. 800, the directional center of a transmission beam is changed from an antenna provided on a flying object by tilting the head toward the flying object at an inclination corresponding to the relative speed, and a reflection signal reflected by a target object is changed. We proposed a proximity fuze that received an antenna and detonated the trajectory at a predetermined timing.

[0003]

Further, in order to detonate the trajectory of the flying object at an appropriate timing, it is necessary to consider not only the relative velocity but also the distance between the flying object and the target. However, in the prior art, the distance between the flying object and the target has not been taken into account when setting the firing timing of the warhead of the flying object. The reason is that there is no means for detecting the distance between the flying object and the target. The present invention has been made in view of the need for improvement in the above conventional technology, and attempts to detonate the trajectory of a flying object at a more appropriate timing according to the relative speed of the target and the distance between the flying object and the target. Is what you do.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a proximity fuze of the present invention is mounted on a flying object, and oscillates to oscillate a transmission signal in a proximity fuze for initiating a trajectory in proximity to a flying target. A sensor having a circuit, a plurality of beams having different inclination angles of the directivity centers, transmitting the transmission signal, and receiving the reflection signal reflected from the target when the transmission signal hits the target. A seeker having means for detecting a relative speed between the flying object and the target; a beam switching circuit for switching a beam of the sensor in accordance with the relative speed; A target detection circuit for detecting presence, a distance detection circuit for detecting a distance between the flying object and the target based on an output of the target detection circuit, an output of the distance detection circuit, and an output of the seeker. ignition And having an ignition timing calculating circuit for calculating the timing, the ignition circuit for detonating the warhead of the projectile by the output of the ignition timing computing circuit.

[0005]

Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention. The oscillation signal 13 generated by the oscillation circuit 3 is sent to the sensor 4. On the other hand, when the relative speed signal 11 for transmitting information on the relative speed between the flying object detected by the speaker 1 and the target is transmitted to the beam switching circuit 2, the beam of the sensor 4 is transmitted according to the relative speed signal 11. The beam switching signal 12 for switching the beam is transmitted from the beam switching circuit 2 to the sensor 4.
Is transmitted to The sensor 4 has a plurality of beams corresponding to the relative speed, and switches the beam of the sensor 4 according to the relative speed by the transmitted beam switching signal 12.
An oscillation signal 13 is transmitted from the sensor 4 as a transmission signal 19 in the beam direction.

At this time, if the target 10 exists in the beam, the transmission signal 19 hits the target and is reflected as a reflected signal 20. When the reflection signal 20 is received by the sensor 4, the reception signal 14 is transmitted to the target detection circuit 5 to detect the presence of the target. The target presence signal 15 output from the target detection circuit 5 is sent to the distance detection circuit 6, and the distance between the flying object and the target is detected. Distance signal 16 and relative speed signal 1
1 is sent to the ignition timing calculation circuit 7, and the ignition timing signal 17 is transmitted from the ignition timing calculation circuit 7 to the ignition circuit 8 at a timing corresponding to the relative speed and distance between the flying object and the target, and the warhead 9 is detonated. Signal 18 is provided to the warhead 9.

Hereinafter, the operation of the embodiment of the present invention will be described. If the relative speed between the flying object and the target is low,
The beam is switched to a beam having a small inclination, that is, a beam that is close to a right angle to the axis of the flying vehicle, and the target is detected. On the other hand, if the relative speed is high, the beam is switched to a beam with a large inclination, that is, a beam that is further inclined in the axial direction of the flying vehicle, and the target is detected. When the relative speed is high, the target is detected at an earlier timing than when the relative speed is low, and the warhead 9 is detonated. Furthermore, when the distance between the flying object and the target is short, the detonation of the warhead 9 is performed earlier than in the case where the distance between the flying object and the target is short.

As described above, the proximity tube according to the present invention can be used at a predetermined timing with respect to the target in accordance with not only the relative speed between the target and the flying object but also the distance between the target and the flying object. Can detonate projectile warheads.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 seeker 2 beam switching circuit 3 oscillation circuit 4 sensor 5 target detection circuit 6 distance detection circuit 7 ignition timing calculation circuit 8 ignition circuit 9 warhead 10 target 11 relative speed signal 12 beam switching signal 13 oscillation signal 14 reception Signal 15 Target presence signal 16 Distance signal 17 Ignition timing signal 18 Ignition signal 19 Transmission signal 20 Reflection signal

Claims (1)

[Claims] An oscillating circuit for oscillating a transmission signal and a plurality of beams having different inclination angles of directional centers are provided in a proximity fuze mounted on a flying object and initiating a trajectory in proximity to a flying target. A sensor for transmitting the transmission signal, receiving the reflected signal from the target when the transmission signal has hit the target, and a means for detecting a relative speed between the flying object and the target. A beam switching circuit for switching the beam of the sensor according to the relative speed; a target detection circuit for detecting the presence of the target by an output of the sensor; A distance detection circuit for detecting a distance between the flying object and the target; an ignition timing calculation circuit for calculating an ignition timing based on an output of the distance detection circuit and an output of the seeker; Proximity fuse, characterized in that it comprises an ignition circuit for detonating the warhead of the projectile by the output of the grayed arithmetic circuit.