Abstract

Previously, a standard-free method using the finite impulse response (FIR) filter was successfully employed to transfer the NIR spectra of caustic brines, analgesics, and terpolymer resins. This paper carries the FIR transfer method one step further, leading to an improved algorithm that makes the transfer more robust and general by avoiding transfer artifacts in the filtered spectra. Investigations of the theoretical aspects and application examples of diffuse reflectance NIR datasets show that in comparison with our previous version the improved method is much easier to use and gives artifact-free transferred spectra. The improved method also compares favorably with other current signal correction methods for calibration transfer. With the additional advantage of not requiring a subset of standards to be measured on main and remote instruments, the proposed method is a very useful alternative for calibration transfer.

Improved method for calibrating the visible and near-infrared channels of the National Oceanic and Atmospheric Administration Advanced Very High Resolution Radiometer

Nianzeng Che and John C. Price
Appl. Opt. 32(36) 7471-7478 (1993)

Model transfer method based on piecewise direct standardization in laser-induced-breakdown spectroscopy

Ge Xie, Lanxiang Sun, Dong Shang, Yuan Gao, Xin Ling, and Xiuye Liu
Appl. Opt. 61(30) 9069-9077 (2022)

Method for the calibration of the spectral irradiance of tungsten filament transfer standard sources traceable to synchrotron radiation

Sergey Anevsky, Vladimir Krutikov, Olga Minaeva, Roman Minaev, Dmitriy Senin, Jörg Hollandt, and Dieter R. Taubert
Appl. Opt. 52(21) 5152-5157 (2013)

Improved method for calibrating a Stokes polarimeter

Bruno Boulbry, Jessica C. Ramella-Roman, and Thomas A. Germer
Appl. Opt. 46(35) 8533-8541 (2007)

Decision-free downsampling method assisted via channel-transfer information to improve the reliability of holographic data storage systems

Yahui Zhao, Fei Wu, Xiao Lin, Xiaodi Tan, and Changsheng Xie
Opt. Express 30(24) 43987-44003 (2022)