摘要
对影响参考光式激光多普勒测量火炮驻退机湍流速度场精度的因素进行了分析;着重分析了由于有限渡越时间以及激光光束发散角所引起的多普勒频率加宽;最后提出了使用参考光式LDV提高速度测试精度的注意事项。
The paper discusses mainly the factors that influence the results of turbulent flow field of recoil mechanism measured by reference beam LDV. We focus mainly on frequency extension caused by limited transit time and angular uncertainty. Finally, some suggestions are put forward on how to improve the velocity accuracy when using reference beam LDV.
出处
《测试技术学报》
1998年第4期43-45,共3页
Journal of Test and Measurement Technology
关键词
参考光式LDV
渡越时间
发散角
火炮
reference beam LDV
transit time
angular divergence of beam
