| 由重构矩阵存储精度引起的波前重构误差的研究 |
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| 引用本文： | 张家如,张凯.由重构矩阵存储精度引起的波前重构误差的研究[J].强激光与粒子束,1998,10(2):225-233. |
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| 作者姓名： | 张家如 张凯 |
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| 作者单位： | 中国工程物理研究院应用电子学研究所, 成都527信箱56分箱, 610003 |
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| 基金项目： | 国家863激光技术领域资助 |
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| 摘 要： | 采用Southwell区域法波前重构模型对泽尼克多项式的前几项进行了波前重构的数值模拟, 研究了由重构矩阵存储精度原因而引起的波前重构误差。结果表明,对于前六项,以8Bit的数据精度来存储重构矩阵就能保证波前重构误差不超过1.0%,而对于具有更高阶的泽尼克多项式,比8Bit更高的数据精度不会使误差减小。对一个测量所得的波前进行了研究,所得结果和上述结论相符合。
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| 关 键 词： | 波前重构 数据精度 重构精度 |
| 收稿时间： | 1900-01-01; |
STUDY OF ERROR CAUSED BY WAVEFRONT RECONSTRUCTION MATRIX PRECISION |
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| Zhang Jiaru,Zhang Kai,Zhou Keen,and Wan Min Institute of Applied Electronics,CAEP,P. O. Box ,Chengdu.STUDY OF ERROR CAUSED BY WAVEFRONT RECONSTRUCTION MATRIX PRECISION[J].High Power Laser and Particle Beams,1998,10(2):225-233. |
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| Authors: | Zhang Jiaru Zhang Kai Zhou Keen and Wan Min Institute of Applied Electronics CAEP P O Box Chengdu |
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| Institution: | Zhang Jiaru,Zhang Kai,Zhou Keen,and Wan Min Institute of Applied Electronics,CAEP,P. O. Box 527 56,Chengdu 610003 |
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| Abstract: | The Southwell zonal wavefront reconstruction model was applied to some terms of Zernike polynomials by numeric simulation, and the error caused by data precision of wavefront reconstruction matrix is studied. The relative errors do not exceed 1.0% before the sixth term of Zernike polynomials when the reconstruction matrix memorized in 8Bit precision, and more precise data type can not reduce the error about the next several terms of Zernike polynomials. A measured wavefront is also studied, the result comes to the same. |
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| Keywords: | wavefront reconstruction data precision reconstruction fidelity |
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