JP2007225189A - Guided missile system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a guided missile system for guiding a guided missile to a target while stably transmitting a guiding command to the guided missile without losing maneuvability as the guided missile system. <P>SOLUTION: A control device 2 and a plurality of guided missiles 3 constituting the guided missile system 1 are connected to an adhoc wireless network 4, and each apparatus determines and updates communication path information including a relay path in the network. Further, in the case that direct communication is difficult in such a case the control device 2 and the guided missiles 3 are outside the radio wave coverage of each other, a communication path by a relay is assured. Further, target information obtained by the guided missile 3a closest to a target is positively transmitted through the wireless network 4 to the control device 2 and the successive guided missiles 3, and the information is shared. Thereby, this system is able to sufficiently cope with changes in the condition of the target. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a guided bullet system, and more particularly to a guided bullet system in which a guided bullet and a control device in one fire unit are interconnected by a wireless network.

  When a target target is dealt with by a guided bullet system composed of a plurality of guided bullets and control devices, this guided bullet system is generally operated as follows. That is, the control device first captures and tracks the target target. The control device transfers the target information to the guided bullet while continuing to capture and track the target target. A single or a plurality of guided bullets are fired toward the target at a predetermined timing.

  The guided bullet continues to fly based on the target information received before launching and the guidance command sent from the control device by radio waves after launching. When approaching the target, the guided bullet captures and tracks the target target with its own sensor and meets the target target by autonomous guidance.

  Here, when a guidance command is sent by radio waves to a flying bullet from a control device placed on the ground, it is not always stable communication due to the pose of each guided bullet and the influence of topography on the flight path, etc. The environment may not be obtained. Or, in the case of guiding a long distance, there is a possibility that it is outside the radio wave reachable range. Therefore, in these cases, the desired guidance cannot be performed, and it is difficult to guide and approach the guided bullet to the vicinity of the target.

A technique that can be applied to avoid such an event has been disclosed (for example, see Patent Document 1). In this example, data transmitted between the drone and a control device that remotely controls the drone is relayed by a relay satellite, thereby enabling remote control even outside the radio wave sighting range.
Japanese Patent Laid-Open No. 10-285099 (4th page, FIG. 1)

  However, as described above, in the case of a method using a relay platform such as a relay satellite, it is essential to operate the guided bullet system in cooperation with these platforms, which increases the scale of the entire system and increases the operation mode. Is complicated, and is accompanied by various temporal and spatial constraints. For this reason, there has been a demand for a guided bullet system that can transmit a reliable guidance command to the guided bullet and reliably guide the guided bullet to the target while making use of the mobility as the guided bullet system.

  The present invention has been made in consideration of the above-described circumstances, and a guided bullet system for guiding a guided command to a target while stably transmitting a guided command to the guided bullet without losing mobility as a guided bullet system. The purpose is to provide.

  In order to achieve the above object, a guided bullet system according to the present invention includes a plurality of guided bullets, a control device that controls the plurality of guided bullets, the plurality of guided bullets and the control device connected to each other, and a connection A wireless network that realizes information transmission between the plurality of guided bullets and the control device, wherein the control device is based on the first target information acquisition means for acquiring target information, and the acquired target information, Control means for managing the firing of the guided bullet and instructing the guided bullet through the wireless network, each of the plurality of guided bullets acquires target information and sends it to the wireless network A second target information acquisition means; a guidance means for guiding itself based on the acquired target information and a command from a control device via a wireless network; The command to other of the missile from the apparatus characterized by comprising a relay unit for relaying in said wireless network.

  According to the present invention, it is possible to obtain a guided bullet system that guides a guided bullet to a target while stably transmitting a guided command to the guided bullet without losing mobility as the guided bullet system.

  The best mode for carrying out the guided bullet system according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a block diagram showing an embodiment of a guided bullet system according to the present invention. In this embodiment, there are two guided bullets, and the wireless network is an ad hoc type.

  As shown in FIG. 1, the guided bullet system 1 includes a control device 2, two guided bullets 3 (3 a and 3 b), and a wireless network 4. The control device 2 acquires the target information, controls the firing of the guided bullets, and gives a guidance command after the firing to control the guided bullets. Here, the control device 2 includes a target information acquisition unit 21, a guided bullet control unit 22, and a network connection unit 23.

  The target information acquisition unit 21 acquires target information such as the direction and distance of a target on the ground or in the air using, for example, a radar sensor and sends the target information to the guided bullet control unit 22. Based on the target information from the target information acquisition unit 21, the guided bullet control unit 22 manages the firing of the guided bullet 3 described later and issues a guidance command to the guided bullet 3. The guided bullet control unit 22 includes a launch control unit 221 that manages the firing of the guided bullet 3 and a guidance command unit 222 that issues a guidance command to the guided bullet 3.

  The network connection unit 23 is a communication interface for connecting to a wireless network 4 to be described later, and exchanges information with other devices connected to the wireless network 4 by a predetermined communication protocol. In the present embodiment, a guidance command is sent to the guide bullet 3 via the network connection unit 23 and target information acquired by the guide bullet 3 is received.

  The guided bullet 3 flies toward the target by guidance from the control device 2 or autonomous guidance. Here, the two guide bullets 3a and 3b have the same configuration, and have a target information acquisition unit 31, a guide unit 32, and a network connection unit 33.

  The target information processing unit 31 acquires detailed target information about the target target using, for example, a radar or an infrared sensor, and sends the target information to the guiding unit 32. The guiding unit 32 performs a guiding calculation based on the target information from the target information acquiring unit 31, the guiding command from the control device 2, or the target information acquired by another guiding bullet, and guides itself. The network connection unit 33 is a communication interface for connecting to the wireless communication network 4, and exchanges information with other devices connected to the wireless network 4 using a predetermined communication protocol. In the present embodiment, the guidance command from the control device 2 is received via the network connection unit 33 and the target information acquired by the target information acquisition unit 31 is transmitted.

  In this embodiment, the wireless network 4 is an ad hoc network, and enables information transmission including relaying between devices connected to the network by a predetermined communication protocol. Here, as the communication protocol, for example, the OLSR that determines and updates the communication route information including the relay route in the network by periodically exchanging the communication route information of each device at all times. (Optimized Link State Routing) or the like can be used, and the network connection units 23 and 33 described above exchange information according to this protocol.

  Next, the operation of the guided bullet system 1 configured as described above will be described with reference to FIG. 1 and the conceptual diagram of FIG. 2 and the flowcharts of FIGS. FIG. 2 is a conceptual diagram showing an example of an operation scene for explaining the operation of the guided bullet system 1 according to the present invention.

  In FIG. 2, two guided bullets 3 a and 3 b are fired, the guided bullet 3 a approaches the target 5 and is autonomously guided, and the guided bullet 3 b is received via the guidance command from the control device 2 and the wireless network 4. Each of the guided bullets 3 is flying based on the target information acquired. The control device 2 and the two guide bullets 3a and 3b are connected to each other by the wireless network 4 and can transmit information, but the guide bullet 3a is outside the radio wave reach of the control device 2, The information transmission illustrates the scene where the guide bullet 3b is relaying.

  3 is a flowchart for explaining the operation of the control device 2 including the operation scene illustrated in FIG. 2, and FIG. 4 is a flowchart for explaining the operation of the guide bullets 3a and 3b.

  First, the operation of the control device 2 will be described. The control device 2 monitors the connection status with devices (guide bullets 3a and 3b in this embodiment) connected to the wireless network 4 by the network connection unit 23, and the latest communication for transmitting information with each device. The route information is continuously collected and updated (ST301). At the same time, the target information acquisition unit 21 searches for and captures the target target (ST302). Then, target information such as the distance and direction of the target target is acquired (ST303).

  The acquired target information is sent to each guided bullet via the wireless network 4 and also sent to the launch control unit 221 in preparation for the firing of the guided bullet. The launch control unit 221 manages the launch of each guided bullet based on this target information. Then, the guide bullet 3a is instructed to fire at a predetermined timing, and the guide bullet 3a starts flying based on the latest target information (ST304). After starting the flight of the guide bullet 3a, the control device 2 starts sending a guide command to the guide bullet 3a via the wireless network 4 (ST305).

  Following launch and guidance of the guide bullet 3a, the launch control unit 221 manages launch of the guide bullet 3b based on the target information. Then, the guide bullet 3b is fired in the same sequence as the guide bullet 3a (ST306), and the sending of the guide command is started (ST307).

  Even during the launch and guidance of these two guided bullets 3a and 3b, the communication path information is continuously updated by the network connection units 23 and 33 of each device, and even if the mutual positional relationship changes, the connection to the network is continued. The information transmission between the devices connected to the wireless network 4 is ensured including the case of relaying by the connected devices. That is, as illustrated in FIG. 2, even when the guided bullet 3a is outside the radio wave reach from the control device 2 and a direct information transmission path cannot be secured, the guided bullet having communication path information including the relay path is provided. A communication path is secured by relaying 3b (ST308). The guidance command from the control device 2 is continuously sent to the guidance bullets 3a and 3b via the wireless communication network 4 in which the communication path is secured in this way. The flight is continued based on the command (ST309).

  Thereafter, the preceding guided bullet 3a shifts to autonomous guidance when approaching the target up to a predetermined distance, and continues to approach the target with better accuracy while acquiring target information by the target information acquiring unit 31 itself. . At this time, the target information acquired by the guide bullet 3a is sent to the subsequent guide bullet 3b and the control device 2 via the wireless network 4 and shared.

  That is, in the guided bullet 3b, it is possible to obtain detailed target information before the end of the flight by using the target information from the guided bullet 3a. Guidance that can respond flexibly is possible. Further, the control device 2 can issue a guidance command based on more detailed and latest target information (ST310). And the control apparatus 2 complete | finishes said operation | movement after each guide bullet meets a target (ST311).

  Next, the operation of the guide bullet 3 will be described. First, the guide bullet 3 monitors the connection status with devices connected to the wireless network 4 by the network connection unit 33, and collects and updates communication path information with each device (ST401). In conjunction with this operation, target information sent from the control device 2 via the wireless network 4 is received in preparation for launch (ST402). Then, when an instruction to fire is given from the control device 2, the guide bullet 3 starts flying (ST403).

  After the launch, the guidance command issued from the control device 2 is received via the wireless network 4 (ST404), and the flight is continued while the communication path information of the wireless network 4 is continuously updated by the network connection unit 33 (ST405). When the target approaches a predetermined distance (Y in ST406), the target information acquisition unit 31 starts acquiring target information (ST407), performs guidance calculation based on the new target information, and achieves good for the target. Autonomous guidance is started with high accuracy (ST408).

  Even after the autonomous guidance is started, the communication route information of the wireless network 4 is continuously updated, and communication routes with other guided bullets and the control device 2 connected to the wireless network 4 are continuously secured (ST409). In this way, the target information acquired by the target information acquisition unit 31 is sent to the subsequent guided bullet and the control device 2 via the wireless network 4 in which the communication path between the devices is secured. And by autonomously guiding while sharing this target information among a plurality of guided bullets, for example, in the case of dealing with a plurality of different targets, it is also possible to deal with a situation change caused by a sudden movement of a target, etc. Adapt well. In addition, the control device 2 can issue a guidance command based on more detailed target information (ST410).

  Thereafter, the guided bullet 3 continues to fly toward the target by autonomous guidance while further acquiring target information. Then, after meeting the target, the operation is terminated (ST411).

  As described above, in the guided bullet system according to the present invention, the control device 2 and the plurality of guided bullets 3 constituting the guided bullet system 1 are connected to the ad hoc wireless network 4. In this wireless network 4, each connected device determines and updates communication path information including a relay path in the network.

  As a result, when sending a guidance command from the control device 2 to the flying bullet 3 in flight by radio waves, even when direct communication is difficult, such as out of the radio wave reachable range, a relay communication path is secured, For example, there is no need for cooperative operation with a relay platform or the like. Therefore, it is possible to obtain a guided bullet system capable of guiding a guided command to a target while stably transmitting the guided command without losing mobility as the guided bullet system.

  The target information acquired by the guided bullet 3a closest to the target is also reliably transmitted and shared via the wireless network 4 to the control device 2, the subsequent guided bullet 3, and the like. Then, based on this detailed and latest target information shared with the guide bullet 3a, the control device 2 issues a guide command, and the subsequent guide bullet 3b can perform its own guide control. Therefore, it is possible to obtain a guided bullet system that can cope with and cope with a change in the target situation.

  In the present embodiment, the number of guided bullets has been described as two, but the present invention is not limited to this. It is possible to configure the number of guided bullets to be 3 or more, and in that case, the same effect can be obtained.

1 is a block diagram showing an embodiment of a guided bullet system according to the present invention. The conceptual diagram which shows an example of the operation scene of the guidance bullet system which concerns on this invention. The flowchart for demonstrating operation | movement of a control apparatus. The flowchart for demonstrating operation | movement of a guidance bullet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guided bullet system 2 Control apparatus 3, 3a, 3b Guided bullet 4 Wireless network 5 Target

Claims (3)

Multiple guided bullets,
A control device for controlling these multiple guided ammunition,
The plurality of guided bullets and the control device are connected, and includes a wireless network that realizes information transmission between the connected guided bullets and the control device,
The control device includes first target information acquisition means for acquiring target information;
Based on the acquired target information, comprising a control means for managing the launch of the guided bullet and instructing the guided bullet via the wireless network,
Each of the plurality of guided bullets acquires target information and sends second target information to a wireless network;
Guidance means for guiding itself based on the acquired target information and a command from the control device via the wireless network;
A guided bullet system comprising relay means for relaying a command for the other guided bullet from the control device in the wireless network.   2. The guided bullet system according to claim 1, wherein the guided bullet guiding unit further guides itself by interweaving target information acquired by another guided bullet received via a wireless network.   The guided bullet system according to claim 1, wherein the wireless network is an ad hoc network.

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