基于光学定位与协同扫描的水下激光ATP关键技术研究

Underwater laser communication is a new arisen technology for short-to-mid range underwater data transmissions, which has advantages such as high data rate, high anti-interception ability, small apparatus size, etc. The key point to make the link stability of the laser transmission, is the acquisition, tracking, and pointing (ATP) issue in laser communication, which requires rapid acquisition, high accuracy tracking and pointing properties. Based on the researches of atmosphere and free space laser communication, our project develops ATP technology for the underwater laser communication, while the relatively fundamental research is very meaningful. In order to reduce the acquisition time between underwater laser terminals, we propose to set laser buoy arrays on surface of the water for rapid acquisition of beacon by utilizing cooperative scanning and underwater optical localization. The main contributions include, but not limited to, common underwater channel modeling based on double gamma function coefficient mapping, laser buoy arrays cooperative scanning, joint laser buoy arrays and Fourier harmonic analysis for underwater optical localization. After solving these key techniques, a solid foundation is established for developing the ATP module of the underwater laser communication.

水下激光通信是近年来兴起的一项针对水下中短程数据传输的技术，具有传输速率高、抗截获能力强、器件尺寸小等诸多优点，其中对信标光快速捕获和精确跟瞄（ATP）的问题，是实现激光通信链路稳定工作的关键，相关的基础性研究具有重要的科学和实际意义。项目在现有大气和自由空间激光通信基础上，重点开展对水下激光ATP技术的研究。为应对水下激光终端间捕获时间较长的问题，拟在水面铺设浮标光阵列，通过协同扫描和水下光学定位，实现信标光的快速捕获。主要创新工作有：基于双伽玛函数参数映射的水下通用信道建模；浮标光阵列协同扫描；联合浮标光阵列和傅里叶谐波分析相位比对的水下光学定位。相应的关键基础问题的解决，将为水下激光通信系统ATP模块研制打下坚实基础。

水下激光通信是近年来兴起的一项针对水下中短程数据传输的技术，具有传输速率高、抗截获能力强、器件尺寸小等诸多优点，其中对信标光快速捕获和精确跟瞄（ATP）的问题，是实现激光通信链路稳定工作的关键，相关的基础性研究具有重要的科学和实际意义。项目在现有大气和自由空间激光通信基础上，重点开展对水下激光ATP技术的研究。为应对水下激光终端间捕获时间较长的问题，拟在水面铺设浮标光阵列，通过协同扫描和水下光学定位，实现信标光的快速捕获；为应对影响光斑识别精度的抖振问题，拟以变结构控制为基础，引入模糊分析来消除预设干扰上界的约束。主要创新工作有：基于双伽玛函数参数映射的水下通用信道建模；浮标光阵列协同扫描；联合浮标光阵列和傅里叶谐波分析相位比对的水下光学定位；基于模糊变结构控制的抖振抑制。相应的关键基础问题的解决，将为水下激光通信系统ATP模块研制打下坚实基础。