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# Find the Gap: Multi-band, Remote Measurement System to Quantify the Fit of Wearable Systems" published in IEEE Sensors
- URL: https://justin.geesl.in/find-the-gap-multi-band-remote-measurement-system-to-quantify-the-fit-of-wearable-systems-published-in-ieee-sensors/
- Published: 2025-04-17T05:00:00.000Z
- Updated: 2026-07-20T14:27:43.000Z
- Author: Justin Geeslin
- Tags: Project: Air Gap Sensing for Garment Fit

Abstract:

> We propose a technique for remotely measuring the gap between an external wearable device/clothing surface and the underlying (visually obstructed) body surface – which we refer to as the garment-body ’air gap’ – that commonly occurs in positive ease garments (i.e., garments that are larger in dimension than the underlying body dimension). To achieve this, we developed a triple-frequency band remote measurement system based on a 77-81 GHz FMCW radar, a 40kHz ultrasound sensor, and an infrared 344 GHz proximity sensor. When used synergistically, these sensors allow for remote measurement of the uniaxial distances to multiple layered surfaces simultaneously.

[https://ieeexplore.ieee.org/document/10902067](https://ieeexplore.ieee.org/document/10902067?ref=justin.geesl.in)