光学线性调频步进信号合成与高分辨测距演示
发布时间：2018-08-22 12:05
【摘要】：利用分立激光器合成大带宽线性调频步进信号(FSCS)激光信号源以实现高分辨测距。依据FSCS信号测距原理,数值计算了激光器各参数对合成FSCS信号的影响及其误差容限。计算表明,在各激光器参数误差中,起始频率和起始时间误差是引起合成FSCS信号测距分辨力恶化的最主要因素。另外,利用一台中心波长1550nm、线宽为150kHz的线性调波长激光器,通过光学斩波方式,模拟产生了合成FSCS信号,进行了高分辨力的测距演示。理论分析与实验结果表明,采用分立激光器合成高分辨力测距FSCS信号是可行的。
[Abstract]:The (FSCS) laser signal source of large bandwidth linear frequency modulation step signal is synthesized by discrete laser to realize high resolution ranging. According to the principle of FSCS signal ranging, the influence of laser parameters on synthetic FSCS signal and its error tolerance are numerically calculated. The calculation results show that the error of starting frequency and time is the most important factor that leads to the deterioration of ranging resolution of synthetic FSCS signal. In addition, a linearly modulated wavelength laser with a central wavelength of 1550nm and a linewidth of 150kHz is used to simulate the synthetic FSCS signal by optical chopping and demonstrate the range finding with high resolution. Theoretical analysis and experimental results show that it is feasible to synthesize high resolution ranging FSCS signal by discrete laser.
【作者单位】： 中国科学院电子学研究所;中国科学院大学;
【基金】：国家自然科学基金项目(61178071)
【分类号】：TN958.98
[Abstract]:The (FSCS) laser signal source of large bandwidth linear frequency modulation step signal is synthesized by discrete laser to realize high resolution ranging. According to the principle of FSCS signal ranging, the influence of laser parameters on synthetic FSCS signal and its error tolerance are numerically calculated. The calculation results show that the error of starting frequency and time is the most important factor that leads to the deterioration of ranging resolution of synthetic FSCS signal. In addition, a linearly modulated wavelength laser with a central wavelength of 1550nm and a linewidth of 150kHz is used to simulate the synthetic FSCS signal by optical chopping and demonstrate the range finding with high resolution. Theoretical analysis and experimental results show that it is feasible to synthesize high resolution ranging FSCS signal by discrete laser.
【作者单位】： 中国科学院电子学研究所;中国科学院大学;
【基金】：国家自然科学基金项目(61178071)
【分类号】：TN958.98
【共引文献】
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