针对复杂背景下高灵敏度光学探测问题,提出了一种基于光子射频振荡器的高灵敏度光学探测方法. 首先通过光子射频振荡机理构建了系统,然后对系统进行数学建模,并进行了详细的推导分析.同时,根据光子射频振荡器噪声功率谱密度及系统设计,分析了系统产生的超低相位噪声功率谱特性,给出了设计系统仿真结果. 仿真实验结果表明,所提出的方法与直接探测方法相比,光学探测灵敏度具有数量级的提高,同时能有效抑制背景色散光谱对目标信息检测的影响,系统所产生的超低相位噪声特性,将有力提升光学探测器对目标微多普勒信号的检测能力.%Based on the research of optical coherent detection in complex background, a new type of laser superheterodyne detection method was proposed, which based on a photon radio frequency technology. Firstly a system by photon RF oscillation mechanism and mathematical model was constructed. The principle of constructing the system was deduced and analyzed. The correctness of the method was verified by theoretical simulation and experiment. Compared with the traditional technology, the proposed method can improve the sensitivity of optical detection by several orders of magnitude, and can effectively suppress the influence of background dispersion spectrum on target information detection.
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