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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 factors influencing the precision of turbulence velocity field in artillery retarder using reference laser Doppler method are analyzed. The Doppler frequency broadening due to finite transit time and laser beam divergence angle is emphatically analyzed. Finally, Considerations for using the reference LDV to improve speed test accuracy.