| 二维激光多普勒测速系统中的数据转换 |
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| 引用本文： | 赵鸿,柴路,王浩,刘书声.二维激光多普勒测速系统中的数据转换[J].实验流体力学,1993(4). |
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| 作者姓名： | 赵鸿 柴路 王浩 刘书声 |
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| 作者单位： | 天津大学
(赵鸿，柴路，王浩)，天津大学(刘书声) |
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| 摘 要： | 通过使用丹迪公司提供的光机系统对多普勒信号进行采集和处理的原理进行分析,得出我们所要测量的信号到达时间、粒子渡越时间、多普勒频率和速度与所贮存的二进制代码之间的数量关系,并根据这些数量关系,编制了新的数据转换软件。这种软件操作方便,转换效率远高于原有的软件。
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| 关 键 词： | 二维LDV系统 数据转换 信号到达时间 粒子渡越时间 多普勒频率和速度 |
THE DATA TRANSFORMATION IN A 2D-LDV SYSTEM |
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| Zhao Hong,Chai Lu,Wang Hao,Liu Shusheng.THE DATA TRANSFORMATION IN A 2D-LDV SYSTEM[J].Experiments and Measur in Fluid Mechanics,1993(4). |
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| Authors: | Zhao Hong Chai Lu Wang Hao Liu Shusheng |
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| Institution: | Tianjin University |
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| Abstract: | It was found that the stored data of the Doppler signals collected by the Dantec Software are binary codes when the Doppler ve-locities were measured applying DISA55X 2D-LDV system.The binarycodes should be transformed to the data which are resultant and FOR-TRAN readable.But it was inconvenient using the Dantec data trans-forming software.The basis of collecting and dealing with the Dopplersignals of DISA 55X 2D-LDV system has been analysed.The quantityequations between the saved codes and the signals of arrival time,theparticle transit time,the Doppler frequencies and velocities are obtained.A new software for DATA transformation is programed according to thetransforming equations.This software is easy to operate and it is moreeffeeient than the old one. |
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