Striping noise analysis and mitigation for microwave humidity sounder

LIU Mingxu; ZHANG Shengwei; HE Jieying

doi:10.11834/jrs.20221660

Common Technology of Historical data Re-Calibration of Domestic Remote Sensing Satellite | Views : 0 下载量: 149 CSCD: 0 更多指标

R-PDF
PDF
Export
Share
Collection
Album

Striping noise analysis and mitigation for microwave humidity sounder
Vol. 27, Issue 10, Pages: 2318-2326(2023)
Published： 07 October 2023 ，
DOI： 10.11834/jrs.20221660

扫描看全文

刘明绪，张升伟，何杰颖.2023.微波湿度计条带噪声的分析与抑制方法研究.遥感学报，27（10）： 2318-2326

Liu M X，Zhang S W and He J Y. 2023. Striping noise analysis and mitigation for microwave humidity sounder. National Remote Sensing Bulletin， 27（10）：2318-2326
刘明绪，张升伟，何杰颖.2023.微波湿度计条带噪声的分析与抑制方法研究.遥感学报，27（10）： 2318-2326 DOI： 10.11834/jrs.20221660.

Liu M X，Zhang S W and He J Y. 2023. Striping noise analysis and mitigation for microwave humidity sounder. National Remote Sensing Bulletin， 27（10）：2318-2326 DOI： 10.11834/jrs.20221660.

摘要

本文基于主成分分析PCA（Principal Components Analysis）和集合经验模态分解EEMD（Ensemble Empirical Mode Decomposition）降噪的基本思想，利用改进的自适应噪声总体集合经验模态分解ICEEMDAN（Improved Complete Ensemble Empirical Mode Decomposition With Adaptive Noise）对原EEMD的条带降噪方法进行了修改，并利用该方法对风云三号C星、D星（FY-3C、FY-3D）微波湿度计（MWHS-2）实际观测亮温中的条带噪声进行了分析。其中主成分分析对数据进行降维，得到各扫描线的主成分分量，模态分解方法分解对应分量，利用各模态能量密度的差异提取出其中的噪声并去除，随后组合剩余模态重构出观测亮温，实现噪声的抑制。通过对原始算法和各类改进后的模态分解方法降噪效果的对比，结果表明使用ICEEMDAN可有效避免EEMD中残余噪声等问题，减少重构误差。数值分析结果表明，改进后的方法使方差进一步降低0.020 K

，信噪比提升0.031 dB，进一步提升了算法的降噪能力。

Abstract

Noise analysis and mitigation play an important role in meteorological satellite data processing. This study is based on the idea of noise mitigation by using Principal Component Analysis (PCA)

Ensemble Empirical Mode Decomposition (EEMD) algorithm

and improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN). The modified method is used to observe data of the microwave humidity sounder (MWHS-2) of the Fengyun-3C and 3D satellites (FY-3C

FY-3D) to analyze the striping noise in its observed brightness temperature. In this study

the effectiveness of this method for MWHS-2 data is confirmed

and a performance analysis of the improved method for data processing and noise mitigation is conducted.

The striping noise has a very high correlation with scan line; thus

using PCA can not only effectively isolate the noise-related principal components

but also reduce the dimension of the processed data. When the noise containing principal components is extracted

the empirical mode decomposition method can be used to adaptively separate each component into multiple modes with different frequencies. The noise can be easily separated from the signal by a method that calculates and compares the average period and energy density by using the differences in energy between noise and signal modes. Finally

the remaining modes are combined to reconstruct the principal components

which reconstruct the observed brightness temperature data.

When this method is applied to the MWHS-2 data

we used the hourly global reanalysis data of ERA5 with RTTOV model to generate the simulated brightness temperature data and compared with the observed brightness temperature before and after processing. The result shows that the algorithm successfully extracts the striping noise in the signal

and the noise histogram exhibits a Gaussian distribution. The noise mitigation effect between the original EEMD algorithm and various improved mode decomposition methods is compared

and the results show that the use of ICEEMDAN can effectively avoid some problems in EEMD

such as the residue noise

and can reduce reconstruction errors. Numerical analysis results show that compared with the EEMD method

this improved method further reduces the variance by 0.020 K

and the Signal-to-Noise Ratio (SNR) increases by 0.031 dB

which further improves the noise mitigation capability of the algorithm.

PCA combined with ensemble empirical mode decomposition can effectively mitigate the striping noise. Although the mode decomposition method is affected by some of its own properties and has certain limitations in accuracy

it has a more convenient operation and higher adaptability. Moreover

the test result shows that this method can achieve satisfactory results. The improvement using ICEEMDAN and calculating the energy density with average period can also be helpful to noise analysis and mitigation and can enhance the reconstruction accuracy. This condition may have certain value for the further improvement of noise reduction algorithm and may improve the accuracy of meteorological data analysis and forecasting.

关键词

风云三号MWHS-2微波辐射测量数据处理降噪PCA经验模态分解条带噪声

Keywords

FY-3MWHS-2microwave radiation measurementdata processingnoise mitigationPCAempirical mode decompositionStriping Noise

references

Colominas M A, Schlotthauer G and Torres M E. 2014. Improved complete ensemble EMD: a suitable tool for biomedical signal processing. Biomedical Signal Processing and Control, 14: 19-29 [doi: 10.1016/j.bspc.2014.06.009http://dx.doi.org/10.1016/j.bspc.2014.06.009]

Huang N E, Shen Z, Long S R, Wu M C, Shih H H, Zheng Q A, Yen N C, Tung C C and Liu H H. 1998. The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 454(1971): 903-995 [doi: 10.1098/rspa.1998.0193http://dx.doi.org/10.1098/rspa.1998.0193]

Jin X, Chi J D, Hu T Y, Chen W X, Gu S Y and An D W. 2019. Research on stripe noise suppression of microwave temperature sounder on FY-3D satellite. Infrared, 40(12): 28-37

金旭, 迟吉东, 胡泰洋, 陈文新, 谷松岩, 安大伟. 2019. 风云三号D星微波温度计条带噪声抑制研究. 红外, 40(12): 28-37 [DOI: 10.3969/j.issn.1672-8785.2019.12.005http://dx.doi.org/10.3969/j.issn.1672-8785.2019.12.005]

Lorenz E N.1956.Empirical orthogonal functions and statistical weather prediction. Science Report 1, Statistical Forecasting Project, Department of Meteorology, MIT NTIS AD 110268

Li J and Liu G Q. 2016. Direct assimilation of Chinese FY-3C Microwave Temperature Sounder-2 radiances in the global GRAPES system. Atmospheric Measurement Techniques, 9(7): 3095-3113 [doi: 10.5194/amt-9-3095-2016http://dx.doi.org/10.5194/amt-9-3095-2016]

Qin Z K, Zou X L and Weng F Z. 2013. Analysis of ATMS striping noise from its Earth scene observations. Journal of Geophysical Research: Atmospheres, 118(23): 13214-13229 [doi: 10.1002/2013JD020399http://dx.doi.org/10.1002/2013JD020399]

Torres M E, Colominas M A, Schlotthauer G and Flandrin P. 2011. A complete ensemble empirical mode decomposition with adaptive noise//2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). Prague: IEEE : 4144-4147 [doi: 10.1109/ICASSP.2011.5947265http://dx.doi.org/10.1109/ICASSP.2011.5947265]

Wu Z H and Huang N E. 2004. A study of the characteristics of white noise using the empirical mode decomposition method. Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 460(2046): 1597-1611 [doi: 10.1098/rspa.2003.1221http://dx.doi.org/10.1098/rspa.2003.1221]

Wu Z H and Huang N E. 2009. Ensemble empirical mode decomposition: a noise-assisted data analysis method. Advances in Adaptive Data Analysis, 1(1): 1-41 [doi: 10.1142/S1793536909000047http://dx.doi.org/10.1142/S1793536909000047]

Yeh J R, Shieh J S and Huang N E. 2010. Complementary ensemble empirical mode decomposition: a novel noise enhanced data analysis method. Advances in Adaptive Data Analysis, 2(2): 135-156 [doi: 10.1142/S1793536910000422http://dx.doi.org/10.1142/S1793536910000422]

Zou X, Dong H and Qin Z. 2017. Striping noise reduction for ATMS window channels using a modified destriping algorithm. Quarterly Journal of the Royal Meteorological Society, 143(707): 2567-2577 [doi: 10.1002/qj.3107http://dx.doi.org/10.1002/qj.3107]

Zou X L, Ma Y and Qin Z K. 2012. Fengyun-3B MicroWave Humidity Sounder (MWHS) data noise characterization and filtering using principle component analysis. IEEE Transactions on Geoscience and Remote Sensing, 50(12): 4892-4902 [doi: 10.1109/TGRS.2012.2202122http://dx.doi.org/10.1109/TGRS.2012.2202122]

Zou X L and Tian X X. 2019. Striping noise analysis and mitigation for microwave temperature Sounder-2 observations. Advances in Atmospheric Sciences, 36(7): 711-720 [doi: 10.1007/s00376-019-9009-xhttp://dx.doi.org/10.1007/s00376-019-9009-x]

Alert me when the article has been cited

提交

Preliminary test of quantitative capability in aerosol retrieval over land from MERSI-II onboard FY-3D

Intercalibration of FY-3B/MWRI and GCOM-W1/AMSR-2 brightness temperature over the Arctic

Global fire monitoring products of FY-3D/MERSI-II and their applications