Ultrasonic random‐signal flow measurement system
Ultrasonic random‐signal flow measurement system
复制标题
超声波随机信号流量测量系统
DOI：
10.1121/1.1903338
复制
发表时间：
1974
影响因子：
2.4
通讯作者：
V. Newhouse
中科院分区：
文献类型：
--
作者：
P. Bendick;V. Newhouse
虽然脉冲多普勒雷达系统被广泛使用，但由于范围模糊问题，可能用于携带声音散射体的液体（例如血液）中的流量测量的超声脉冲多普勒系统的有用范围被限制在几厘米内。描述了一种超声随机信号流量测量系统，该系统被证明没有距离模糊度并且能够连续传输，因此具有低的峰均功率比。从工作随机信号系统的实验数据：展示其优势，传统的脉冲多普勒系统。该系统应适用于许多大规模流量应用，从深血管测量到船舶周围的尾流测量。
Although pulsed Doppler radar systems are widely used, ultrasonic pulsed Doppler systems which are potentially useful for flow measurement in liquids carrying sound scatterers (such as blood) have been limited in their useful range to a few centimeters due to range‐ambiguity problems. An ultrasonic random‐signal flow measurement system is described which is shown to have no range ambiguity and to be able to transmit continuously, thus having a low peak to average power ratio. Experimental data from a working random‐signal system are: presented demonstrating its advantages over conventional pulsed Doppler systems. The system should be useful for many large‐scale flow applications, ranging from measurements in deep‐lying blood vessels to wake measurements around ships.