论文标题
WMS光谱线拟合中Levenberg Marquardt算法的原理和性能分析
Principle and performance analysis of the Levenberg Marquardt algorithm in WMS spectral line fitting
论文作者
论文摘要
游离校准的波长调制光谱（WMS）是痕量气体监测的有效技术。它因其抵抗光强度波动，低频噪声的强烈抑制，快速响应时间和出色的环境适应性而广泛使用。无校准的WMS通常采用Levenberg Marquardt算法进行光谱拟合来检索气体特性。但是，据我们所知，对影响Levenberg Marquardt算法在Free WMS中的运营有效性的主要因素进行了分析。在本文中，我们系统地分析了WMS 2F/1F中的Levenberg Marquardt算法的操作机制。模拟结果表明，参数的数量和初始参数估计的误差是限制算法检索精度的主要因素。
Calibration free wavelength modulation spectroscopy (WMS) is an efficient technique for trace gas monitoring. It is widely used due to its resistance to light intensity fluctuations, strong suppression of low frequency noise, fast response time and excellent environmental adaptability. The calibration free WMS often employs the Levenberg Marquardt algorithm for spectral fitting to retrieve gas characteristics. However, to the best of our knowledge, an analysis of the main factors affecting the operational effectiveness of the Levenberg Marquardt algorithm in calibration free WMS has merely been reported. In this paper, we have systematically analyzed the Levenberg Marquardt algorithm s operating mechanism in WMS 2f/1f. The simulation results show that the number of parameters and initial parameter estimated errors are the main factors limiting the retrieval accuracy of the algorithm.
