| 自由运转双光梳高精度测距技术 |
| 投稿时间：2025-02-20 修订日期：2025-03-08 点此下载全文 |
| 引用本文：陈清翔,邓博文,宁焱,杨馥.自由运转双光梳高精度测距技术[J].红外,2025,46(3):42~46 |
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| 基金项目:国家自然科学基金项目(62375048）；上海市自然科学基金项目(22ZR1402600) |
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| 中文摘要:双光梳测距系统因测量速度快、测距精度高等特性在远距离高精度测量领域显现了巨大潜力。通常情况下，需用复杂的硬件锁定双光梳系统以保证系统的稳定性。这给双光梳系统的实际应用带来负面影响。因此，将自由运转双光梳系统作为光源，利用软件校正算法(主要是互模糊函数)来提取目标的距离，大大简化了实验系统的复杂度。实验结果表明，当目标距离约为1 m、激光重复频率约为100 MHz、双梳重频差约为 774 Hz时，自由运转下双光梳系统的单次测距精度约为3.56 μm，且测量结果具有较好的线性度。本研究为双光梳系统的实际外场应用积累了一定的基础。 |
| 中文关键词:双光梳测距 自由运转 互模糊函数 测距精度 |
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| Free-Running Dual-Comb High-Precision Ranging Technology |
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| Abstract:The dual-comb ranging system has shown great potential in the field of long-distance and high-precision measurement due to its fast measurement speed and high ranging accuracy. Usually, the complex hardware is required to lock the dual-comb system to ensure the stability of the system. This has a negative impact on the practical application of the dual-comb system. Therefore, the free-running dual-comb system is used as the light source, and the software correction algorithms (mainly the cross-ambiguity function) are used to extract the distance of the target, which greatly simplifies the complexity of the experimental system. The experimental results show that when the target distance is about 1 m, the laser repetition frequency is about 100 MHz, and the repetition frequency difference between the combs is about 774 Hz, the single-shot ranging accuracy of the free-running dual-comb system is about 3.56 μm, and the measurement results have good linearity. This study has accumulated a certain foundation for the practical field application of the dual-comb system. |
| keywords:dual-comb ranging free-running cross-ambiguity function ranging accuracy |
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