Time correction synchronous initiation control method for secondary initiation of a cloud burst bomb

Abstract

The application discloses a time correction synchronous initiation control method for secondary initiation of a cloud bomb. In view of the problem that the low initiation synchronism of the secondary initiation of the cloud bomb has a great influence on the detonation effect under the condition of a large range of falling speed, the application uses a detection device carried on the cloud bomb to detect the height from the ground and the current falling speed in real time. When the height from the ground reaches the set height, the sub bomb is thrown out, and after a certain time interval, the cloud bomb is initiated and the cloud explosive is scattered. When the cloud fuel is mixed to the best concentration, the sub bomb falls into the fuel cloud. A plurality of secondary fuzes communicate in real time through a self-organizing network, and the cloud is synchronously initiated through time correction after communication, so that the cloud and mist detonation is formed, and damage is caused to the target.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of initiation control, and particularly relates to a time correction synchronous initiation control method for secondary initiation fuel-air explosive. BACKGROUND

[0002] Fuel-air explosive (FAE) is a kind of damage caused by fuel-air explosive agent thrown by secondary fuze after the first fuze confirms that the target enters the initiation area. The secondary fuze is thrown out, reaches the initiation height, and the first fuze initiates the warhead. The fuel-air explosive agent is dispersed at high speed and mixed with air to form a fuel cloud. When the secondary fuze falls into the fuel cloud, it is initiated to form a detonation.

[0003] The secondary initiation fuel-air explosive can produce detonation, shock wave overpressure, fragments, seismic waves, asphyxiation, thermal radiation and electromagnetic radiation, and has strong comprehensive damage power on "soft targets". However, the key to fully damaging the fuel-air explosive is to initiate the secondary fuze when the fuel-air explosive diffuses to the optimal initiation concentration. However, under the condition of large equivalent charge and high falling speed, the secondary fuze may not initiate the cloud in time, the secondary fuze may be initiated at an incorrect time, the fuel cloud may not be initiated or may not be completely initiated, and multiple secondary fuzes may not be initiated synchronously, resulting in the failure to fully realize the damage effect of the secondary initiation fuel-air explosive.

[0004] In the research on multi-fuze time-space synchronous initiation control technology for short-range interception, Wang Haifeng proposed to use a geomagnetic speed measurement module to correct the timing circuit of the fuze by using an internal program. However, due to the difference between the actual trajectory and the ideal trajectory, the timing error cannot be corrected to the ideal level. SUMMARY

[0005] The application provides a time correction synchronous initiation control method for secondary initiation fuel-air explosive, which solves the problem of low initiation synchronization of the secondary initiation fuel-air explosive under large falling speed conditions and the problem of great influence on the detonation effect.

[0006] The technical solution of the application is as follows: a time correction synchronous initiation control method for secondary initiation fuel-air explosive, comprising the following steps:

[0007] Step 1: After the secondary initiation fuel-air explosive mother bomb is thrown out, a detection device is used to detect the height from the ground and the current falling speed in real time.

[0008] Step 2: The secondary fuze communicates by three handshakes during the flight of the mother bomb to confirm that each secondary fuze has normal sending and receiving capability. A single-layer mesh dynamic topology structure is built among multiple secondary fuzes through a wireless self-organizing network, and each secondary fuze node has the same level.

[0009] Step 3: Time synchronization link between each secondary fuze node is constructed, so that real-time communication between each secondary fuze node is time-synchronized.

[0010] Step 4: When the parent projectile falls to the set height h1, the detection device sets the detonation timing time T z for each secondary fuze, i.e. triggers the zero point of the sub-projectile detonation timing time, and simultaneously throws out the multiple sub-projectiles containing secondary fuzes.

[0011] Step 5: After the sub-projectiles leave the parent projectile, they continue to communicate through the established self-organizing network, and correct the detonation time of each secondary fuze based on the fast adaptive error correction algorithm, to obtain the corrected delay time of each node.

[0012] Step 6: At this time, the parent projectile completes the cloud explosion agent throwing at the detonation height h2, and each secondary fuze is detonated after the self-corrected delay time T Z ', thereby forming synchronous detonation.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] (1) The present application establishes an AdHoc self-organizing network between multiple sub-projectile nodes, and the nodes can communicate in real time after being thrown out, confirming the detonation state of each sub-projectile.

[0015] (2) The present application reduces the influence of crystal oscillator temperature drift error through the AdHoc self-organizing network communication established after the sub-projectiles are thrown out, improves the detonation synchronization, and can reduce the standard deviation of synchronization to less than 10% of the original time delay through single correction, thereby fully realizing the cloud explosion projectile damage effect.

[0016] (3) The present application has fewer communication times than the existing time correction method, meets the high-efficiency time correction in a high requirement and short time interval, and does not need to connect to an external network, so the safety is high.

[0017] (4) The present application realizes the settable detonation time of the secondary detonation cloud explosion projectile, and can set the detonation for different height setting devices, so the environmental adaptability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a flow chart of the time correction synchronous detonation control method for the secondary detonation cloud explosion projectile.

[0019] Figure 2 It is a cloud explosion projectile motion model diagram.

[0020] Figure 3 It is a node communication timing diagram.

[0021] Figure 4 It is a time correction effect diagram.

[0022] Figure 5 A flow chart for correcting the detonation time of each secondary fuze based on a fast adaptive error correction algorithm. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0024] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0025] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; "connection" can be mechanical connection, or electrical connection. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0028] The specific embodiments, technical difficulties and points of the present application will be further introduced below in combination with the design examples.

[0029] In combination with the working principle of the cloud explosion bomb, the cloud explosion bomb needs a certain time to mix with air after the cloud explosion bomb is secondarily detonated after the cloud explosion agent is thrown, the detonation delay time is different under different conditions, and the damage efficiency of the cloud explosion bomb is difficult to fully realize.

[0030] Because the bullet node clock usually uses a common crystal oscillator as the clock source, and is easily affected by temperature drift or crystal oscillator frequency deviation during launching and flight, the clock accuracy decreases, the synchronization of each node clock is not reliable, the cloud explosion bomb service processing process cannot keep synchronization with the network clock server through the NTP protocol, the RTC clock accuracy is low, and the accuracy requirement cannot be met.

[0031] To solve the above problems, the application provides a time correction synchronous initiation control method for a secondary initiation cloud explosion bomb, and the wireless ad hoc network device is started before the sub-bomb is thrown out of the mother bomb.

[0032] The technology will be further described below with reference to the drawings

[0033] In combination Figure 1 A time correction synchronous initiation control method for a secondary initiation cloud explosion bomb, comprising the following steps:

[0034] Step 1: After the mother bomb of the secondary initiation cloud explosion bomb is thrown out, the height from the ground and the current falling speed are detected in real time by using a detection device (purchased, ASN850 radar).

[0035] Step 2: The secondary fuze realizes communication by three handshakes during the flight of the mother bomb, confirms that the sending and receiving capabilities of each secondary fuze are normal, builds a single-layer mesh dynamic topology structure among the multiple secondary fuzes through a wireless ad hoc network, and the node levels of each secondary fuze are the same.

[0036] In combination Figure 2 The motion model of the cloud explosion bomb mother bomb and the sub-bomb is established, the initiation timing time and the parachute opening time are set to the multiple sub-bombs, the Ad Hoc self-organizing network is established among the multiple sub-bomb nodes when the mother bomb approaches the set height h1.

[0037] Step 3: The time synchronization link among the secondary fuze nodes is constructed, so that the real-time communication among the secondary fuze nodes keeps time synchronization.

[0038] Step 4: When the mother bomb falls to the set height h1, the detection device sets the detonation time T for the sub-bomb z , and starts the detonation time of each secondary fuze (i.e. triggers the sub-bomb detonation time zero point), while throwing the multiple sub-bombs containing secondary fuses outward.

[0039] Step 5: Combination Figure 5 , the sub-bomb continues to communicate through the established self-organizing network after leaving the mother bomb, and corrects the detonation time of each secondary fuze based on the fast adaptive error correction algorithm, and the corresponding corrected delay time of each node is obtained, as follows:

[0040] S5.1: After the sub-bomb leaves the mother bomb, it continues to communicate in real time to maintain a single-layer mesh dynamic topology, and each secondary fuze node has the same level.

[0041] S5.2: Each secondary fuze node communicates for the first time after reaching the set communication time T, and the communication content is the T of each secondary fuze.

[0042] S5.3: After a unit time t, each secondary fuze node communicates for the second time, and the content is the value T+t of the real-time clock count of each secondary fuze node.

[0043] S5.4: For any two secondary fuze nodes, 1# node and 2# node, respectively, send each other a beacon:

[0044] When the 2# node receives the time beacon of the 1# node in the two communications, it sends back the two time beacons T2', T2'+t2' of its own receiving time to the 1# node.

[0045] The 1# node receives the time T1" of the first time the 2# node returns, and receives the time T2"+t2" of the second time the 2# node returns, as shown in Figure 3 .

[0046] S5.5: Until all nodes return the two time beacons, the time is corrected through the fast adaptive error correction algorithm:

[0047] Since each node can only count by the local clock when waiting for the return time beacon, the time difference between sending and receiving the time beacon is different, so it is assumed that the relative positions of multiple nodes are unchanged, and the communication delay time between each other is equal.

[0048] Let the time values of the 1# node receiving the two returns of the remaining 5 nodes be T2', T2'+t2', T3', T3'+t3', T4', T4'+t4', T5', T5'+t5', T6', T6'+t6', respectively.

[0049] Therefore, we can deduce that the time error between node 1 and node 2 within a unit time t is Δt. 1-2 =t2′-t, the correction error during the pairwise node setting time is:

[0050]

[0051] The average correction error of the delay time between node 1 and the other 5 launch nodes is:

[0052]

[0053] When node 1 receives two time beacons returned by the other five nodes, the delay times of node 1 are respectively T2″, T2″+t2″, T3″, T3″+t3″, T4″, T4″+t4″, T5″, T5″+t5″, T6″, T6″+t6″.

[0054] Therefore, we can deduce the delay error Δt of node 1 relative to node 2 within a unit time t. 2-1 =t2”-t, thus obtaining the average delay error within the setup time:

[0055]

[0056] The self-average correction error of the delay time of launcher 1 relative to the other 5 launch nodes is obtained as follows:

[0057]

[0058] The timer time of this node is corrected based on the relative error between nodes and the node's own delay error to obtain the corrected delay time T of this node. Z ′:

[0059]

[0060] Since each node sends its own sequence number when issuing a time beacon, such as Figure 5 As shown, after a node is launched, it goes through four communication processes: one transmission, two transmissions, one reception, and two receptions. The local time is corrected based on the received information of each node to improve the time synchronization of multiple nodes. If a node falls out of the network, it will detonate at a timed interval based on its own delay time.

[0061] Step 6: At this point, the parent bomb completes the release of the thermobaric explosive at the detonation height h2, and each secondary fuse releases its own calibrated delay time T. z After a delay, synchronous detonation is achieved.

[0062] The key of the present application is to reach the minimization of the time error of the detonation by the communication between the nodes. The detonation instruction is sent after the timing time, and the multiple bullets are detonated with high synchronism. Figure 4 The time correction is simulated for 6 bullets with 1000ms delay, and the time standard deviation is 29.5 before correction and 2.8 after correction, so that the time synchronism is greatly improved.

[0063] In conclusion, the present application can meet the time error of multiple local clocks, correct the time of each unit through the least communication times, and reach high synchronism when the communication time is short. The communication times can be increased to reach higher synchronism when the communication time is longer.

Claims

1. A time-corrected simultaneous initiation control method for secondary initiation of a cloud explosion bomb, characterized by The steps are as follows: Step 1: After the secondary initiation of the cloud bomb mother bomb is thrown, the detection device is used to detect the height from the ground and the current falling speed in real time; Step 2: The secondary fuze communicates three times during the flight of the mother bomb to confirm that each secondary fuze sends and receives normally, and a single-layer mesh dynamic topology structure is built among multiple secondary fuzes through wireless self-organizing network, and each secondary fuze node has the same level; Step 3: A time synchronization link is built among each secondary fuze node, so that real-time communication among each secondary fuze node maintains time synchronization; Step 4: When the mother bomb falls to the set height h1, the detection device sets the detonation time T for the sub-bombs z , starts the detonation time of each secondary fuse, triggers the zero point of the sub-bomb detonation time, and throws the multiple sub-bombs containing secondary fuses outward Step 5: After the sub-bullets leave the mother bomb, they continue to communicate through the established self-organizing network, and correct the initiation time of each secondary fuze based on the fast adaptive error correction algorithm, and correspondingly obtain the corrected delay time of each node; Step 6: At this time, the parent projectile is at the height h2, and the cloud-explosive agent is sprayed, and each secondary fuze is ignited according to the corrected delay time T Z After the delay, synchronous ignition is formed.

2. The time-corrected simultaneous initiation control method for secondary initiation of a fuel-air explosive according to claim 1, characterized by: The detection device in step 1 uses radar.

3. The time-corrected simultaneous initiation control method for secondary initiation of a fuel-air explosive according to claim 1, characterized by: In step 5, after the sub-bullets leave the mother bomb, they continue to communicate through the established self-organizing network, and correct the initiation time of each secondary fuze based on the fast adaptive error correction algorithm, and correspondingly obtain the corrected delay time of each node, which is as follows: S5.1: After the sub-bullets leave the mother bomb, they continue to communicate in real time to maintain a single-layer mesh dynamic topology structure, and each secondary fuze node has the same level; S5.2: Each secondary fuze node communicates for the first time after reaching the set communication time T, and the communication content is the T of each secondary fuze; S5.3: After a unit time t, each secondary fuze node communicates for the second time, and the content is the value T+t counted by the real-time clock of each secondary fuze node; S5.4: For any two secondary fuze nodes, 1# node and 2# node, they exchange beacons; S5.5: Until receiving all the two time beacon returned by the node, again through the fast adaptive error correction algorithm for time correction, get the node corrected delay time T z ′.

4. The time-corrected sympathetic initiation control method for secondary initiation of a fuel-air explosive according to claim 3, characterized by: In S5.4, for any two secondary fuze nodes, 1# node and 2# node, they exchange beacons, which is as follows: When the 2# node receives the time beacon of the 1# node in the two communications, it sends back the two time beacons T2', T2'+t2' of its own receiving time to the 1# node; The 1# node receives the time T1" when the 2# node returns for the first time, and receives the time T2"+t2" when the 2# node returns for the second time.

5. The time-corrected sympathetic initiation control method for secondary initiation of a fuel-air explosive according to claim 4, characterized by: In S5.5, until receiving the two time beacons returned by all nodes, time correction is performed again through a fast adaptive error correction algorithm to obtain the corrected delay time T of the node Z Specifically as follows: Since each node can only count by the local clock when waiting for the return of the time beacon, the time difference between sending and receiving the time beacon is different, so it is assumed that the relative positions of multiple nodes are unchanged, and the communication delay time between each other is equal; Let the two return time values of the 1# node receiving the two return time beacons of the remaining 5 nodes be T2', T2'+t2', T3', T3'+t3', T4', T4'+t4', T5', T5'+t5', T6', T6'+t6'; Thus, the time error Δt between the No. 1 node and the No. 2 node in a unit time t is 1-2 = t2' - t, and the correction error ΔT of each node in the setting time is 1-2 : The average correction error of the delay time of the 1# node and the remaining 5 nodes is α1: When the 1# node receives the two return time beacons of the remaining 5 nodes, the delay time of the 1# node itself corresponds to T2", T2"+t2", T3", T3"+t3", T4", T4"+t4", T5", T5"+t5", T6", T6"+t6"; Thus, the self-delay error Δt of the No. 1 node relative to the No. 2 node in a unit time t is obtained 2-1 = t2" - t, and further, the average self-delay error in the setting time is obtained: The average correction error β1 of the delay time of No. 1 relative to the rest of the five nodes is obtained: i represents the node number; According to the relative error between nodes and the node's own delay error, the node timer time is corrected to obtain the corrected delay time T of the node Z ′:

6. The time-corrected sympathetic initiation control method for secondary initiation of a fuel-air explosive according to claim 4, characterized by: In S5.5, if a node drops out of the network, the self-delay time is used for timing detonation.

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