CAJ | 학술논문

研究多重散射效应对舰船尾流气泡群光散射强度和偏振特征的影响是舰船光尾流探测以及新型光自导鱼雷研究的基础.基于矢量Monte Carlo方法建立了舰船尾流气泡群激光后向探测仿真模型,重点研究了尾流气泡群的多重散射机理,分析了多重散射效应、尾流气泡群密度对回波信号强度和偏振特征的影响规律.基于粒子碰撞重要性抽样的基本思想,在传统能量接收方法的基础上,提出了回波光子偏振贡献接收方法和回波信号偏振信息统计方法,解决了小视场系统光子返回概率低无法形成回波能量的难题.构建了模拟尾流气泡群激光散射强度和偏振探测实验平台,从实验的角度验证了模拟结果的准确性.实验和模拟结果的一致性表明,利用回波强度、偏振信息可表征气泡群距离、密度信息,从而可对舰船尾流特别是低密度尾流进行高精度的探测和辨识.
연구다중산사효응대함선미류기포군광산사강도화편진특정적영향시함선광미류탐측이급신형광자도어뢰연구적기출.기우시량Monte Carlo방법건립료함선미류기포군격광후향탐측방진모형,중점연구료미류기포군적다중산사궤리,분석료다중산사효응、미류기포군밀도대회파신호강도화편진특정적영향규률.기우입자팽당중요성추양적기본사상,재전통능량접수방법적기출상,제출료회파광자편진공헌접수방법화회파신호편진신식통계방법,해결료소시장계통광자반회개솔저무법형성회파능량적난제.구건료모의미류기포군격광산사강도화편진탐측실험평태,종실험적각도험증료모의결과적준학성.실험화모의결과적일치성표명,이용회파강도、편진신식가표정기포군거리、밀도신식,종이가대함선미류특별시저밀도미류진행고정도적탐측화변식.
@@@@It is the research foundation of ship wake detection by laser and new-generation optical homing torpedo to investigate the influence of multiple scattering effect on light scattering intensity and polarization characteristics of the ship wake bubbles. The simulation model of laser back-scattering detection by ship wake bubbles is based on vector Monte Carlo method, and the multiple scattering mechanism is studied. The influences of multiple scattering effect and the bubble density in ship wake on the light scattering intensity and polarization characteristics of echo signal are analyzed. The echo photon polarization contribution reception method and the echo signal polarization statistical method are proposed to solve the problem that the low photon return probability cannot form the echo energy in the system with small receiver field of view. These methods are based on the basic idea of the particle collision importance sampling and the traditional energy receiving method. The polarization detection experimental platform for the simulated wake bubbles is built and the accuracy of the simulation results is verified in experiment. The consistence of the experimental and simulation results shows that the bubble distance and density information can be characterized by echo intensity, polarization information and the echo signal intensity, and the polarization characteristics can be used to detect and distinguish the ship wake bubbles, or even a low density wake bubbles with high precision.