海水布里渊散射谱特征参数的测量

发布时间：2018-10-08 19:58

【摘要】：为了去除布里渊雷达系统中Fabry-Perot标准具的谱线展宽对谱特征参数测量精度的影响,本文提出了一种双参数拟合结合单参数拟合的方法。该方法首先根据F-P标准具的谱线展宽原理,采用双参数L-M算法进行拟合,分析了拟合参数中拟合向量初始值和最大迭代次数对拟合精度的影响;然后针对其中一个拟合参数结果不稳定的问题,选择附加一个单参数拟合来提高测量精度。实验结果表明,该方法可以使谱特征参数测量精度稳定在MHz量级,保证了0.1℃的温度测量精度。
[Abstract]:In order to eliminate the influence of spectral line broadening of Fabry-Perot standard tools on the measurement accuracy of spectral characteristic parameters, a method of two-parameter fitting combined with single-parameter fitting is proposed in this paper. Firstly, according to the spectral broadening principle of F-P standard, two parameter L-M algorithm is used to fit the fitting parameters, and the effect of the initial value of fitting vector and the maximum number of iterations on the fitting accuracy is analyzed. Then a single parameter fitting is added to improve the accuracy of the measurement in view of the instability of one of the fitting parameters. The experimental results show that this method can make the measurement accuracy of spectral characteristic parameters stable in MHz order and ensure the precision of temperature measurement at 0.1 鈩，

本文编号：2258074