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赵松年, 熊小芸. SWT声雷达探测系统对大气边界层声回波信号的变换与检测[J]. 大气科学, 1991, 15(2): 101-109. DOI: 10.3878/j.issn.1006-9895.1991.02.12
引用本文: 赵松年, 熊小芸. SWT声雷达探测系统对大气边界层声回波信号的变换与检测[J]. 大气科学, 1991, 15(2): 101-109. DOI: 10.3878/j.issn.1006-9895.1991.02.12
Zhao Songnian, Xiong Xiaoyun. Transformation and detection of acoustic echo signals with SWT-type sodar probing system in the atmospheric boundary layer[J]. Chinese Journal of Atmospheric Sciences, 1991, 15(2): 101-109. DOI: 10.3878/j.issn.1006-9895.1991.02.12
Citation: Zhao Songnian, Xiong Xiaoyun. Transformation and detection of acoustic echo signals with SWT-type sodar probing system in the atmospheric boundary layer[J]. Chinese Journal of Atmospheric Sciences, 1991, 15(2): 101-109. DOI: 10.3878/j.issn.1006-9895.1991.02.12

SWT声雷达探测系统对大气边界层声回波信号的变换与检测

Transformation and detection of acoustic echo signals with SWT-type sodar probing system in the atmospheric boundary layer

  • 摘要: 在SWT声雷达探测系统中,采用作者提出的检测声回波信号的跟踪滤波锁相方法(PLTF),提取Doppler频偏f_d的V-F-BCD变换和模块化设计,减小了锁相环(PLL)的失锁现象,改善了声雷达的测风精度,闭路同源标定结果表明SWT声雷达探测系统的测频精度优于0.1Hz,相当于测风精度可达λ/4/s(λ——发射声波长),由于环境噪声的干扰,将会使测风精度略有降低。

     

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