物理实验
物理實驗
물리실험
PHYSICS EXPERIMENTATION
2014年
7期
6-9
,共4页
周红仙%张潞英%王毅
週紅仙%張潞英%王毅
주홍선%장로영%왕의
电子散斑%微小角度%干涉条纹%散斑噪声
電子散斑%微小角度%榦涉條紋%散斑譟聲
전자산반%미소각도%간섭조문%산반조성
electronic speckle%micro-angle%interference stripe%speckle noise
用电子散斑干涉法建立了微小角度定量测量系统，根据散斑噪声的特点，计算散斑图像沿不同方向的投影及投影的调制度，调制度最大值投影的周期为干涉条纹的宽度。实验结果表明该方法最小可测量角度为10-5 rad 。
用電子散斑榦涉法建立瞭微小角度定量測量繫統，根據散斑譟聲的特點，計算散斑圖像沿不同方嚮的投影及投影的調製度，調製度最大值投影的週期為榦涉條紋的寬度。實驗結果錶明該方法最小可測量角度為10-5 rad 。
용전자산반간섭법건립료미소각도정량측량계통，근거산반조성적특점，계산산반도상연불동방향적투영급투영적조제도，조제도최대치투영적주기위간섭조문적관도。실험결과표명해방법최소가측량각도위10-5 rad 。
A system for measuring micro-angle was built with electric speckle pattern interferome-try (ESPI) .The system included an optical imaging system and a simple and effective algorithm for reducing speckle noise and calculating the width of interference stripes according to the characteristics of the speckle noise .Interference stripes were integrated along different directions ,and their modula-tions were calculated .The width of the interference stripes was equal to the period of the projection when a modulation reached its maximum value .The experimental result indicated that the minimum angle was 10-5 rad using this system .
