Comparison of nonlinear filtering techniques for photonic systems with blackbody radiation

Abstract

This work explores a theoretical solution for noise reduction in photonic systems using blackbody radiators. Traditionally, signal noise can be reduced by increasing the integration time during signal acquisition. However, increasing the integration time during signal acquisition will reduce the acquisition speed of the signal. By developing and applying a filter using a model based on the theoretical equations for blackbody radiation, the noise of the signal can be reduced without increasing integration time. In this work, three filters, extended Kalman filter, unscented Kalman filter (UKF), and extended sliding innovation filter (ESIF), are compared for blackbody photonic systems. The filters are tested on a simulated signal from five scenarios, each simulating different experimental conditions. In particular, the nonlinear filters, UKF and ESIF, showed a significant reduction of noise from the simulated signal in each scenario. The results show great promise for photonic systems using blackbody radiators that require post-process for noise reduction.

The rise of the polarimetric Kalman filter: a bibliometric study on its growing significance

“…KF's importance lies in various sectors like environmental monitoring [12][13][14][15][16][17][18][19][20][21][22][23][24][25], weather forecast [26][27][28][29][30][31][32][33][34][35][36][37], defense surveillance [38][39][40][41][42][43][44][45][46][47], and autonomous navigation systems . Its capacity to draw clear information even from messy real-world data improving the precision and reliability of measurements has made it a key tool for boosting real-time decision-making abilities [71][72][73][74][75][76][77][78][79][80][81][82][83]…”

Mapping the growth of supercontinuum applications in modern spectroscopy

“…On the stage of one of the most dynamic disciplines of spectroscopy, the advent of supercontinuum (SC) sources drastically marked the start of an epochal era with this technology mapped out across diverse scientific fields. An important development has been the emergence of SC generation, a condition where high-intensity pulses of light are propagated through the linear optical media in order to produce a wide spectrum of light which has been a major factor in going beyond normal spectroscopic impediments leading to enhanced sensitivity and resolution in analysis of various materials, biological entities, and atmosphere composition [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Moreover, it has become an integral part of modern spectroscopy in many ways by providing a very useful platform for the broadband light provision and this is key in the development and application of spectroscopic techniques [19][20][21][22][23][24][25][26][27].…”