Performance of a single-beam pulse-to-pulse coherent Doppler profiler
Performance of a single-beam pulse-to-pulse coherent Doppler profiler
复制标题
单波束脉冲间相干多普勒轮廓仪的性能
DOI：
10.1109/48.508159
复制
发表时间：
1996
影响因子：
4.1
通讯作者：
A. Lohrmann
中科院分区：
文献类型：
--
作者：
L. Zedel;A. Hay;R. Cabrera;A. Lohrmann
我们报告的单波束1.7 MHz相干多普勒声纳的测试。该系统是PC控制的，使用数字信号处理器（DSP）来采集和提取速度和后向散射振幅数据。一系列双箱校准测试的结果表明，对于1-2 m范围内10个轮廓/秒的数据速率和1.5 cm距离箱，准确度约为5 mm s/sup -1/。系统精度的表达式的开发，允许推广到其他脉冲到脉冲相干多普勒系统。我们目前的数据显示，由于粒子平流的后向散射信号的系统去相关：增加去相关被认为是在换能器近场。在实验室产生的波的速度剖面的例子观察。
We report on the testing of a single-beam 1.7-MHz coherent Doppler sonar. The system is PC-controlled, using a digital signal processor (DSP) to acquire and extract the velocity and backscatter amplitude data. Results from a series of tow-tank calibration tests demonstrate an accuracy in the order of 5 mm s/sup -1/ for data rates of 10 profiles/second over a 1-2 m range with 1.5-cm range bins. An expression for system accuracy is developed which allows generalization to other pulse-to-pulse coherent Doppler systems. We present data showing the systematic decorrelation of backscatter signals due to particle advection: increased decorrelation is seen in the transducer near-field. Example observations of velocity profiles in laboratory-generated waves are presented.