Key result
The proposed radar-based method reduced the root mean square error between respiratory intervals estimated by two radar systems from 0.25 s to 0.03 s compared to the conventional method.
Why the study?
Small animals are restless and hyperactive, requiring suppression of body motion components for accurate radar-based respiratory measurement.
Answers are grounded in this paper and cite their sources.
A novel millimeter-wave radar system with motion suppression algorithms can accurately measure the respiratory rate of a restless rhesus monkey without physical contact.
We propose a method to measure the respiration of a rhesus monkey using a millimeter-wave radar system with an antenna array. Unlike humans, small animals are generally restless and hyperactive in nature, and suppression of their body motion components is therefore necessary to realize accurate respiratory measurements. The proposed method detects and suppresses nonperiodic body motion components while also combining and emphasizing the periodic components from multiple echoes acquired from the target. Results indicate that the proposed method can measure the respiration rate of the target monkey accurately, even with frequent body movements.
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Sakamoto et al. (2023) studied Respiration measurement (n=1). Proposed radar-based respiratory measurement method vs. Conventional method was evaluated on Root mean square (RMS) error between respiratory intervals estimated from two radar systems. The proposed radar-based method reduced the root mean square error between respiratory intervals estimated by two radar systems from 0.25 s to 0.03 s compared to the conventional method.
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