Sarafianou, M., Thien, Y. F., Sze Wai Choong, D., Goh, D. J., Jihang, L., Koh, Y., Leotti, A., Cerini, F., & Esposito, A. (2025). High-Precision Airborne Rangefinding with PMUTs Based on Signal Spatial Coherence. 2025 IEEE International Ultrasonics Symposium (IUS), 1–4. https://doi.org/10.1109/ius62464.2025.11201514
Abstract:
This paper reports a novel PMUT-based rangefinding method that explores the use of spatial coherence through the post-processing of two captured RX datasets towards highly accurate airborne ranging. The proposed signal processing methodology is experimentally validated with the method achieving a
impressive mean accuracy of 96.3% at detectable distance of 1 meter. A time-alignment algorithm is used to synchronize the two RX datasets captured, which are then point-to-point multiplied. This step intends to coherently improve the echo signal contribution within the two RX datasets, while effectively suppressing
the noise. From the experimental results, the potential usage of the proposed signal processing methodology is highlighted for PMUT-based highly accurate airborne ranging applications.
License type:
Publisher Copyright
Funding Info:
This research / project is supported by the A*STAR - Piezo Specialty Lab-in-Fab 2.0
Grant Reference no. : I2301E0027