Laser Radar Performance and Improved Beam Alignment

激光雷达性能和改进的光束对准

• 批准号: 9021303
• 负责人: Rod Frehlich
• 金额: $ 16.2万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-09-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9021303&HistoricalAwards=false
• 关键词: Laser; Radar; Performance; Improved; Beam

Research is proposed to calculate the statistics of the coherent lidar power for a real monostatic lidar system, including the effects of refractive turbulence and detector geometry. Analytic expressions for the average coherent lidar power for an idealized lidar system operating in the atmospheric boundary layer will be calculated to determine system performance. Various detector geometries will be considered to investigate the performance of detector arrays and to test the hypothesis that beam alignment methods based on the effects of refractive turbulence are superior to present methods. The alignment constraints for a monostatic system with refractive turbulence will be determined using analytic techniques for idealized systems and numerical simulations for real systems. The simulations will also produce an accurate statistical description of real laser radar signal fluctuations. The different physical mechanisms of laser radar performance will be investigated and the regime where simple analytic results are valid will be determined. The calculations will emphasize the shorter wavelengths of solid state lidar systems. This research will help design the next generation of solid state lidars for remote sensing of the atmosphere.

研究建议计算的统计数据， 真实的单基地激光雷达的相干激光雷达功率 包括折射湍流的影响 和探测器几何形状。 的解析表达式 理想激光雷达的平均相干激光雷达功率 在大气边界层中运行的系统 将被计算以确定系统性能。 将考虑各种探测器几何形状， 研究探测器阵列的性能， 检验光束对准方法 基于折射湍流的影响， 优于现有方法的上级方法。 对准 具有折射率的单站系统的约束 湍流将使用分析的 理想化系统和数值方法 模拟真实的系统。 模拟将 也能对真实的 激光雷达信号波动 不同的物理 激光雷达性能的机制将是 调查和政权，简单的分析 将确定结果是否有效。 计算 将强调固态的较短波长 激光雷达系统这项研究将有助于设计下一个 固态激光雷达的产生 大气层