Model-Based Material Parameter Estimation for Terahertz Reflection Spectroscopy


One important yet commonly overlooked phenomenon in terahertz (THz) reflection spectroscopy is the etalon effect-interference caused by multiple reflections from dielectric layers. Material layers are present in many THz applications from the monitoring of pharmaceutical tablet coating thickness to the detection of drugs, explosives, or other contraband concealed beneath layers of packaging and/or clothing. This paper focuses on the development and implementation of a model-based material parameter estimation technique, primarily for use in reflection mode THz spectroscopy that takes the etalon effect into account. The technique is adapted from techniques developed for transmission spectroscopy of thin samples and includes a priori information; namely, the assumption that a material's complex refractive index behaves consistently with the Lorentz dispersion model. The inclusion of the multiple returns provides additional information about the material and its structure, alleviating the need for short time windows in the fast Fourier transform (FFT) processing, which can limit spectral resolution. In addition, the parametrization of the material's dielectric function offers the potential for material classification based on these estimated dispersion model parameters. The parametric model-based method is validated by comparison with results from a conventional, non-parametric method applied to transmission mode data before being applied to reflection mode data for further validation with transmission mode results. Tests are also conducted to evaluate the parametric technique's robustness against measurement noise and ambiguity in sample thickness.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE :Model-Based Thermal Anomaly Detection in Cloud Datacenters Using Thermal Imaging - 2018ABSTRACT:The growing importance, giant scale, and high server density of high-performance computing datacenters build them vulnerable
PROJECT TITLE :Maximum Power Point Tracking Control of Photovoltaic Systems: A Polynomial Fuzzy Model-Based Approach - 2017ABSTRACT:This paper introduces a polynomial fuzzy model (PFM)-primarily based maximum power purpose tracking
PROJECT TITLE :Good Posture, Good Balance: Comparison of Bioinspired and Model-Based Approaches for Posture Control of Humanoid RobotsABSTRACT:This text provides a theoretical and thorough experimental comparison of two distinct
PROJECT TITLE :Robust Trajectory Tracking Error Model-Based Predictive Control for Unmanned Ground VehiclesABSTRACT:This paper proposes a new sturdy trajectory tracking error-based management approach for unmanned ground vehicles.
PROJECT TITLE :Online Model-Based Condition Monitoring for Brushless Wound-Field Synchronous Generator to Detect and Diagnose Stator Windings Turn-to-Turn Shorts Using Extended Kalman FilterABSTRACT:In this paper, a model-primarily

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry