FMCW Laser Fuze Structure with Multi-Channel Beam Based on 3D Particle Collision Scattering Model under Smoke...

Area of Science:

• Optics and Photonics
• Laser Technology
• Particle Physics

Background:

• Accurate target detection is challenging for frequency-modulated continuous-wave (FMCW) laser fuzes in smoke and particle-laden environments.
• Photon transmission and interaction with smoke particles degrade signal-to-noise ratio (SNR), hindering performance.
• Improving target echo signal amplitude is crucial for enhanced detection in adverse conditions.

Purpose of the Study:

• To investigate photon transmission and FMCW laser echo signal behavior in smoke environments considering 3D particle collisions.
• To design and evaluate a multi-channel laser fuze structure for improved target detection performance.
• To enhance the signal-to-noise ratio (SNR) and anti-interference capabilities of laser fuzes.

Main Methods:

• Modeling photon-particle interactions using three-dimensional (3D) collision perspectives.
• Developing and conducting Unity3D simulations of FMCW laser echo signals based on 3D particle collisions.
• Designing a multi-channel beam emission laser fuze structure and researching its impact on target characteristics.

Main Results:

• Multi-channel laser emission demonstrably enhances laser target echo signal amplitude compared to single-channel systems.
• The proposed multi-channel approach improves anti-interference capabilities against combined particle effects.
• Simulation results were validated through experimental testing using a four-channel laser prototype.

Conclusions:

• The study reveals laser target properties influenced by 3D particle collisions in smoky environments.
• Utilizing target characteristics within the 3D particle collision model effectively enhances FMCW laser fuze detection performance.
• The multi-channel laser emission design is a reasonable and effective strategy for improving laser fuze operation in challenging conditions.