【摘要】：為了去除布里淵雷達(dá)系統(tǒng)中Fabry-Perot標(biāo)準(zhǔn)具的譜線展寬對(duì)譜特征參數(shù)測(cè)量精度的影響,本文提出了一種雙參數(shù)擬合結(jié)合單參數(shù)擬合的方法。該方法首先根據(jù)F-P標(biāo)準(zhǔn)具的譜線展寬原理,采用雙參數(shù)L-M算法進(jìn)行擬合,分析了擬合參數(shù)中擬合向量初始值和最大迭代次數(shù)對(duì)擬合精度的影響;然后針對(duì)其中一個(gè)擬合參數(shù)結(jié)果不穩(wěn)定的問(wèn)題,選擇附加一個(gè)單參數(shù)擬合來(lái)提高測(cè)量精度。實(shí)驗(yàn)結(jié)果表明,該方法可以使譜特征參數(shù)測(cè)量精度穩(wěn)定在MHz量級(jí),保證了0.1℃的溫度測(cè)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，

本文編號(hào)：2258074