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| Effect of speckle pattern on laser Doppler velocimeters | |
| 作者姓名： | 吕亮 桂华侨 赵天鹏 徐军 何德勇 王安廷 李锋 明海 谢建平 |
| 摘 要： | The effect of speckle pattern on laser Doppler velocimeters is studied theoretically and experimentally. We have found that dynamic speckle patterns can cause error in velocity measurement. Increasing sampling time and using proper signal processing circuits can eliminate this bad effect caused by speckle pattern. The accuracy of velocity measurement is better than 2.1% in a wide velocity range (4.66-468.86 mm/s) when speckle effects are taken into account. |
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