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A laser watermarking guidance method based on multi-beam interference semi-active homing

A sub-beam and semi-active technology, applied in optical transmission systems, electrical components, electromagnetic wave transmission systems, etc., can solve the problems of guided weapons failure and reduce the battlefield survivability of semi-active guided weapons, and achieve high anti-interference ability and good spatial coherence Sexy, highly recognizable effects

Active Publication Date: 2020-07-31
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common point of these encoding methods is that the encoding is regular. The enemy can use the laser decoy jamming system to interfere with the semi-active guided weapons that adopt the above coding method. The decoy jamming system can identify and copy the laser coded signal in a short time. Furthermore, the laser signal with the same encoding method is launched by the jammer to the false target in advance, causing the guided weapon to fail and reducing the battlefield survivability of the semi-active guided weapon

Method used

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  • A laser watermarking guidance method based on multi-beam interference semi-active homing
  • A laser watermarking guidance method based on multi-beam interference semi-active homing
  • A laser watermarking guidance method based on multi-beam interference semi-active homing

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Effect test

Embodiment 1

[0030] Such as figure 1 As shown in a, a laser watermarking guidance method with multi-sub-beam interference semi-active homing, at least includes: a laser 1, an optical beam splitter 2, and a photoelectric receiver 3, the output light of the laser 1 is split into beams by the optical beam splitter 2 Three beams of parallel light, the three beam splitters have the same optical path, the three beams of parallel light form an interference field in space, the photoelectric receiver 3 performs imaging detection on the light intensity information of the interference field formed at the target, and analyzes the detection information, And compare it with the spatial interference field model, and output according to the comparison result.

[0031] Such as figure 2 As shown in a, the three beams of parallel light form an interference field in space according to the following distribution function:

[0032]

[0033] In the formula, c is a constant factor, P is the total power of t...

Embodiment 2

[0047] Such as figure 1 As shown in b, a laser watermarking guidance method with multi-beam interference semi-active homing, at least including: a laser 1, an optical beam splitter 2, a timing generator 4, a photoelectric receiver 3 and a target, the output light of the laser 1 passes through the optical The beam splitter 2 splits the beam into four beams of parallel light, and the four beam splitters have the same optical path. The four beams of parallel light form an interference field in space, and after passing through the timing generator 4, they carry timing code information to form the guidance of time-space fusion signal, the photoelectric receiver 3 performs imaging detection on the light intensity information of the interference field formed at the target, analyzes the detection information, compares it with the spatial interference field model, and outputs according to the comparison result.

[0048] Such as figure 2 As shown in b, the four beams of parallel light...

Embodiment 3

[0064] Such as figure 1 As shown in c, a laser watermarking guidance method with multi-sub-beam interference semi-active homing, at least including: a laser 1, an optical beam splitter 2, a timing generator 4, a photoelectric receiver 3 and a target, and the laser 1 passes through the timing generator 4 Encrypted coded output, the encrypted coded output light is split by optical beam splitter 2, the beam splitter has the same optical path, the output light of laser 1 is split into five beams of parallel light by optical beam splitter 2, and five beams are output from the beam splitter With the same optical path, the five beams of parallel light form an interference field in space, and after passing through the timing generator 4, they carry timing coded information to form a guidance signal for fusion of time and space domains. Imaging detection: analyze the detection information, compare it with the spatial interference field model, and output according to the comparison resu...

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Abstract

The invention relates to a laser guidance method, in particular to a multi-sub-beam interference semi-active homing laser watermarking guidance method. In the method, at least a laser, an optical beamsplitter and a photoelectric receiver are provided. Output light of the laser is divided by the optical beam splitter into multiple beams of parallel light, and the multiple beams of parallel light form an interference field in space. The photoelectric receiver carries out imaging detection on light intensity information of the interference field formed in the position of a target, detection information is analyzed and is compared with a spatial interference field mode, and output is performed on the basis of a comparison result. Provided is the multi-sub-beam interference semi-active hominglaser watermarking guidance method that is high in identification and high in anti-interference capability. Moreover, the method combines spatial watermarking characteristics with temporal encoding characteristics to provide laser guidance safety.

Description

technical field [0001] The invention relates to a laser guidance method, in particular to a laser watermark guidance method with multi-beam interference semi-active homing. Background technique [0002] Laser semi-active homing guided weapons have the advantages of high strike accuracy, wide military use, simple structure, and low cost, and are indispensable in modern warfare. The laser semi-active homing guidance system consists of a coded and controllable laser target indicator and a laser seeker on the missile. The laser target indicator irradiates the laser beam with coded characteristics to the target surface, and the laser seeker receives the The laser signal is decoded and identified, and then the target is attacked. It can be seen that laser coding technology is the key to laser guidance technology. Its purpose is to ensure that laser weapons can accurately capture and strike targets under complex and changeable war conditions, and can also meet the strategy of simu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/50H04B10/516H04B10/80
CPCH04B10/503H04B10/516H04B10/80H04L2209/608
Inventor 傅超尚佩瑾吴梦瑶王石语蔡德芳李兵斌
Owner XIDIAN UNIV
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