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Calculation Method of Near-field Echo Power of Laser Fuze Based on Beam Decomposition and Local Irradiation

A laser fuze and echo power technology, applied in fuzes, near-fire fuzes, weapon accessories, etc., can solve the problems of slow response speed and low precision of near-field echo signals, and achieve fast response speed, easy implementation, and time cost. low effect

Active Publication Date: 2017-03-22
XIDIAN UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a laser fuze near-field echo power calculation method based on beam decomposition and local irradiation, which solves the problems of low precision and slow response speed in the existing radio fuze calculation target near-field echo signal

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  • Calculation Method of Near-field Echo Power of Laser Fuze Based on Beam Decomposition and Local Irradiation
  • Calculation Method of Near-field Echo Power of Laser Fuze Based on Beam Decomposition and Local Irradiation
  • Calculation Method of Near-field Echo Power of Laser Fuze Based on Beam Decomposition and Local Irradiation

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] The missile fuze is composed of a transceiver system that emits a pulse signal of a certain width. During the rendezvous between the missile and the target, when the transmitted signal is irradiated on the target, the laser signal scattered by the target is received by the receiver to form a received power signal. This signal can be used as one of the criteria for missile detonation. The present invention provides a method for calculating the near-field echo power of the laser fuze in the missile-eye rendezvous process based on beam decomposition and partial irradiation, which can be used to simulate and calculate the echo power of the laser fuze under different conditions, and can be applied to the auxiliary design of the fuze .

[0049] The present invention uses the beam decomposition method to decompose the wide beam into a serie...

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Abstract

The invention discloses laser-fuze near-field return wave power calculation based on wave beam decomposition and partial irradiation. The laser-fuze near-field return wave power calculation comprises the following steps: firstly, establishing a fuze coordinate system and a laser-fuze launching site model, adopting 3D Max to carry out geometric modeling, then, adopting a triangular grid mode to carry out surface grid division on a complex target surface, and extracting vertex numbers and vertex coordinate information of triangle face-units of a geometric model; carrying out wave beam decomposition on a laser wave beam at a cross section of the laser wave beam, and dividing grids at equal intervals on the cross section of the laser wave beam, approximately considering that strength on each grid is uniform when the grids are small enough, approximating the strength of the whole grid by utilizing strength of the center point of each grid, and adopting a transmission distance to determine longitudinal attenuation in a longitudinal direction; decomposing an original laser wave beam into a plurality of small wave beams, calculating return wave power of each small wave beam, and finally, superposing, thereby obtaining overall return wave power of fuze. The laser-fuze near-field return wave power calculation has the beneficial effects that calculation for a target near-field return wave signal is high in precision, and reaction speed is high.

Description

technical field [0001] The invention belongs to the field of laser echo detection and analysis of complex targets, and relates to a method for calculating near-field echo power of a laser fuze based on beam decomposition and local irradiation. Background technique [0002] Due to the characteristics of strong directivity, narrow beam, no sidelobe, and anti-interference, the laser is superior to radio fuzes, etc., and it has been used in laser fuzes. The light scattering characteristics of the target have important reference significance for the development of active laser fuze. Different targets have different reflection characteristics, and different parts of the same target also have different reflection characteristics. For the same material, the surface shape and surface state are different, and the reflection characteristics are also quite different, which causes the dispersion of the active optical fuze. sex. For targets with low reflectivity, to meet a certain opera...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42C21/00F42C13/02
CPCF42C13/023F42C21/00
Inventor 曹运华吴振森李海英王利国林嘉轩
Owner XIDIAN UNIV
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