Deakin University
Browse

File(s) under permanent embargo

Suppression of interference in continuous wave Doppler radar based respiratory measurements

Version 2 2024-06-03, 12:03
Version 1 2016-03-30, 13:08
journal contribution
posted on 2024-06-03, 12:03 authored by YS Lee, Pubudu PathiranaPubudu Pathirana
Microwave Doppler radar has received considerable attention as a non-contact form of measuring human respiration; in particular for long term monitoring. One of the main challenges in converting this into a viable application is to suppress or separate the artefacts and other interfering signals from the desired respiration signal using a less complex and practically feasible design for regular and potentially real time use. Existing systems either require complex experimental setups or multiple Doppler radar modules to achieve this. In this paper, we propose an approach based on EMD-ICA and approximate entropy ideas to systematically separate received Doppler shifted signal into distinct components and reconstruct the desired respiration pattern pertaining to respective physiological activity. Indeed this allows suppression of the undesirable artefacts and interference from other competing signals. Practical experiments confirmed comparable performance of the proposed method to the measurements obtained through chest straps which are widely used clinically for monitoring respiration.

History

Journal

Biomedical signal processing and control

Volume

25

Pagination

86-90

Location

Amsterdam, The Netherlands

ISSN

1746-8094

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2015, Elsevier

Publisher

Elsevier