Citation

Jamaldin, Juliana and Chua, Ming Yam and Lim, Heng Siong (2022) Investigation of Millimetre Wave Scattering Mechanism for Human Postures and Gaits Sensing. In: 2nd FET PG Engineering Colloquium Proceedings 2022, 1-15 December 2022, Multimedia University, Malaysia. (Unpublished)

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Abstract

Scholars have been proposing various approaches to recognize human being postures and movements using radars as an alternative to the traditional vision-based and sensor-based methods in order to eliminate the limitations introduced by the two methods. In most studies, radar Doppler signatures of a single moving subject was measured and analysed and, in some others, the Doppler signatures were used together with deep learning algorithm techniques to estimate the postures or the movements. However, approaches using Doppler signatures are only useful to recognize moving objects and the black-box nature of deep learning approaches provides little understanding on how the radar signals are being reflected by the human being in different postures and movements. In this research, an investigation of millimetre wave (mmWave) scattering mechanism for human postures and gaits sensing through simulation and measurement is proposed to identify and quantify the scattered mmWave and therefore to understand the difference of the scattered mmWave properties for different human body postures. The study will be conducted in 5 stages which simulation and actual measurement of the Radar Cross Section (RCS) of a human body in different postures are conducted in the second and the third stage. To simulate the RCS, 3D Human Body Models (HBM) are created to represent the 5th, 50th and 95th percentiles of young males. In each of the states, investigation of RCS of simple objects are also conducted to establish setup and procedure guidelines for both simulation and measurement of RCS for human postures. The RCS patterns from both simulation and measurement for the simple objects are found to be almost comparable with each other. The RCS for human postures, however, is having some difference which further investigation is required in order to explain them. These differences might result from the acuuracy of the HBM model created in the earlier stage which might not represent the actual human postures; as the RCS is greatly affected by the surface area of the human body in different postures, angles of the postures need to be defined as accurate as possible.

Item Type:	Conference or Workshop Item (Other)
Uncontrolled Keywords:	Millimeter wave, scattering, radar cross section, human postures
Divisions:	Faculty of Engineering and Technology (FET)
Depositing User:	Ms Nurul Iqtiani Ahmad
Date Deposited:	20 Feb 2023 09:25
Last Modified:	20 Feb 2023 09:25
URII:	http://shdl.mmu.edu.my/id/eprint/11138

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