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Analytical Comparison of 24GHz and 60GHz Millimetre Wave Radar Sensors

Gholami, Feraidon (2025)

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Gholami, Feraidon
2025
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2025051210923
Tiivistelmä
This study investigated the performance of 60GHz and 24GHz millimeter-wave (mmWave) radar modules for detecting physiological and motion-related parameters.

The primary purpose of this study was to evaluate and compare the capabilities of these two radar technologies for potential use in various applications, including non-contact physiological monitoring and human presence detection. The evaluation involved laboratory experiments conducted in the Metropolia Electronics Laboratory at the Myyrmäki Campus. Commercially available 60GHz (MR60BHA1) and 24GHz (MR24BSD1) radar modules from Seeed Studio were utilized. Data from the 60GHz radar's heart rate measurements were compared against a commercially available Apple Watch as a reference. The 60GHz radar, employing Frequency Modulated Continuous Wave (FMCW) technology, was evaluated for distance, heart rate, and respiration rate measurement. The 24GHz radar, using Doppler technology, was assessed for human presence, motion, and respiration rate detection.

Results indicated that the 60GHz radar achieved accurate distance measurements but exhibited significant discrepancies in heart rate measurements compared to the Apple Watch and faced challenges in respiration rate accuracy. Conversely, the 24GHz radar demonstrated reliable human presence, motion, and respiration rate detection. Consequently, the 60GHz radar, in its current state, is not recommended for prior medical device applications due to its observed inaccuracies in physiological monitoring. The 24GHz radar, however, shows promise for applications requiring accurate presence, motion, and respiration detection. Future study should focus on optimizing the 60GHz radar's signal processing and exploring the 24GHz radar's full potential.
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