摘要
为了研究鱼雷的激光尾流制导方法,分析了舰船航行时所产生尾流的几何特征和光学性质,讨论了舰船尾流中不易在短时间内消失的微气泡对激光的散射特性,提出了利用激光在尾流区域内、外传输时,其前向或后向散射激光在时域、频域和空域中光学参数的变化来快速、准确地判别鱼雷是否进入、穿出尾流,从而导引鱼雷沿目标舰船的航迹靠近目标的新型鱼雷制导方法。讨论了实现鱼雷激光尾流制导的几种不同途径,得出了上视激光尾流制导是一种既不会破坏鱼雷雷体的流线性结构,又可以通过激光扫描来确定尾流边界的先进的鱼雷制导方法的结论。
The geometric characteristics and optical properties of ship wake are studied. It is analyzed that the scattering idiosyncrasy of laser by small bubbles in wake which are difficult to diffuse and dissolve in short time. Based on the changes of the forward or backward laser scattering characteristics in time domain, frequency domain and space domain when torpedo comes in and goes out of the ship wake, a new torpedo-wake-homing scheme to shadow the target is proposed. Some laser-wake-homing ways are discussed and compared. It is confirmed that ascending laser-wake-homing means is the advanced non-acoustic wake homing method which not only does not injure the exterior structure of torpedo, but also can fix on the borderline of ship wake by laser scan.
出处
《激光技术》
CAS
CSCD
北大核心
2005年第5期494-496,500,共4页
Laser Technology
关键词
激光水下探测
鱼雷制导
舰船气泡尾流
激光散射
underwater laser detection
torpedo homing system
ship bubbles wake
laser scattering
