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Matlab-based simulation method for fuze range interference test

A simulation method and fuze technology, applied in the direction of design optimization/simulation, etc., can solve the problems of low deception of interference signals, short interference time, and low success rate, and achieve strong deception, increased success rate, and high success rate Effect

Active Publication Date: 2020-06-26
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0004] Therefore, the problems existing in the prior art are: the interference model is ideally simple; the interference signal is not deceptive without amplitude modulation; the interference time is short, and the success rate in actual interference is not high

Method used

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  • Matlab-based simulation method for fuze range interference test
  • Matlab-based simulation method for fuze range interference test
  • Matlab-based simulation method for fuze range interference test

Examples

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Embodiment

[0090] According to the information, the critical shooting conditions of a 152mm plus howitzer are:

[0091] (1) Full size charge, initial velocity 655m / s, shooting angle 45°,

[0092] (2) No. 4 charge, initial velocity 241m / s, shooting angle 20°.

[0093] A certain type of continuous wave Doppler fuze has a carrier frequency of 750MHz, and it starts to work 5 seconds before landing, and the optimal detonation distance is 2-10m. Fuze transmitting antenna gain D t =10, fuze receiver antenna gain D r =1.6, fuze transmitting antenna direction coefficient F t =0.707, fuze receiving antenna direction coefficient F r = 0.866.

[0094] A jammer presses image 3 Positional relationship, arranged at a distance of X from the drop point 0 = 200m, the jammer adopts an aiming jamming method, and the amplitude modulation frequency Ω = 1kHz.

[0095] According to the critical parameters of howitzer shooting, step (10) is performed, and the maximum falling speed of the fuze is 397.90m...

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Abstract

The invention discloses a fuse target range interference test simulation method based on matlab. The fuse target range interference test simulation method comprises the following steps that 10, wholetrajectory simulation is performed, wherein whole trajectory data of a cannonball are solved by utilizing a four-order runge-kutta iteration method according to a differential equation of flight characteristics of the cannonball in the air; 20, signal processing simulation is performed, a fuse cannonball-target distance is extracted from the whole trajectory data of the cannonball according to a generated transmitting signal, and echo signals, mixing frequency, Doppler gated smoothing and extracting characteristic parameters are simulated and received; 30, the characteristic parameters are judged, wherein the extracted characteristic parameters are compared with a threshold range according to a characteristic parameter threshold of a fuse of determined model, and a starting signal is output; 40, interference is simulated, wherein an interference distance is calculated according to a transmitting signal of a jammer, and a received interference signal is obtained. The fuse target range interference test simulation method based on matlab is closer to the actual, high in fraudulence and high in success rate.

Description

technical field [0001] The invention belongs to the technical field of fuze range interference tests, in particular to a matlab-based fuze range interference test simulation method that is closer to reality, highly deceptive and has a high success rate. Background technique [0002] The fuze range jamming test is the most direct way to test the effectiveness of the fuze jamming strategy, but the range test has high requirements, long implementation period, and high cost. If the software system can be used to simulate and verify the feasibility of the related jamming method before the range test, it will be Greatly improves the efficiency of the interference researcher. [0003] At present, most of the fuze jamming simulation models: the jammer is located at the target, emits a simple AM ​​signal, and the distance between the missile and the target changes at a constant speed. The simulated jamming time starts from tens of meters away from the missile and the target, generall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20
Inventor 赵惠昌侯平王旭
Owner NANJING UNIV OF SCI & TECH
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