基于矢量光场调控的光学相控阵理论模型和实现方法研究

Aiming at the common requirement on the wide steering range of optical phased array, this proposal explores the method of the equivalent conformal light field by spatial transformation based on the vector optical field. By using the phase modulus theory and the conformal wave control method, the mechanism of planar optical phased array is broken through where the steering range is limited and demonstrate the wide range of conformal optical phased array and its implementation principle, wave control method and performance optimization method. This proposal studies the method of generating multi-parameter adjustable plane vector field, the spatial transformation model of equivalent conformal optical field, and the dynamic beamforming method to solve the problem of point-to-point static beam pointing and dynamic target tracking method including beam width and steering step. The experimental platform is designed to carry out the development of key liquid crystal devices and verify the physical experiments to test the "vector optical field phased array technology ", "multi-parameter dynamic wave control method "," logical sub-aperture self-coherence method "and other innovative methods. In order to realize the wide steering range, the optical phased control technology can eliminate the obstacle from the mechanism, and play a role in promoting the development of the field of optical phased array.

针对光学相控阵应用系统对宽指向范围的共性需求，探索基于矢量光场技术通过空间变换形成等效的共形相干近场，利用相模理论和共形波控方法，突破平面光学相控阵指向范围窄的机理限制，实现宽指向范围的共形光学相控阵的原理演示，并阐述其实现原理、波控方法和性能优化方法。研究多参量可调的平面矢量光场的产生方法、等效共形光场的空间变换模型、动态波束赋形方法，解决点对点静态光束指向和动态目标跟踪方法问题；研究共形光学相控的赋形波束质量的优化方法，解决矢量光场技术的共形相控阵指向精度、波束宽度、波束跃度问题；构建原理验证实验平台，开展关键器件研制和验证性物理实验，检验“矢量光场的共形相控阵技术”、“多参量动态波控方法”、“逻辑子孔径自相干法”等创新方法的正确性。形成光学相控阵实现宽指向范围扫描方法、高质量赋形方法等研究成果，为实现宽指向范围光学相控技术从机理上破除一个障碍，为光学相控领域的发展起到推进作用。

针对光学相控阵应用系统对宽指向范围的共性需求，项目开展过程中，全面基于研究内容和关键技术，探索了基于矢量光场技术通过空间变换形成等效的共形相干近场，利用相模理论和共形波控方法，实现了多种宽指向范围的共形光学相控阵的原理演示，并阐述其实现原理、波控方法和性能优化方法。项目研究了多参量可调的平面矢量光场的产生方法和等效共形光场的空间变换模型、动态波束赋形方法，解决点对多点静态光束指向和动态目标跟踪方法问题；研究共形光学相控的赋形波束质量的优化方法，解决矢量光场技术的共形相控阵指向精度、波束宽度、波束跃度问题；项目组构建原理验证实验平台，开展关键器件研制和验证性物理实验，检验多种创新的新方法的正确性。形成光学相控阵实现宽指向范围扫描方法的多种方法等研究成果，为光学相控领域的发展起到推进作用。