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Related Experiment Video

Updated: Feb 14, 2026

$Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene$

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A Binary Correlation-Based Ultrasonic Ranging System with Cross-Measurement Interference Mitigation.

Ashish Mahanta¹, Gil Powers¹, Dulini H S Hewage¹

¹School of Electrical, Computer, and Biomedical Engineering, Southern Illinois University, Carbondale, IL 62901, USA.

Sensors (Basel, Switzerland)

|February 13, 2026

Summary

This study introduces a novel ultrasonic ranging system using binary correlation to accurately measure distances, even with weak signals. It effectively distinguishes echoes from different transmitted ultrasonic waves, reducing interference.

Keywords:

FPGA implementation coherent detection frequency modulation phase modulation time of flight measurement ultrasonic ranging

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Area of Science:

Engineering
Signal Processing
Acoustics

Background:

Ultrasonic ranging systems are crucial for distance measurement.
Cross-measurement interference and low signal-to-noise ratio (SNR) are significant challenges.
Existing systems often struggle with distinguishing echoes from multiple sources.

Purpose of the Study:

To develop and validate a binary correlation-based ultrasonic ranging system.
To support versatile signal modulation schemes for enhanced flexibility.
To effectively mitigate cross-measurement interference and improve measurement accuracy.

Main Methods:

Utilized binary correlation techniques for signal processing.
Implemented distinct ultrasonic wave characteristics for consecutive measurements.
Employed multiple signal detectors to identify echo signal origins.
Derived design equations for various modulation schemes.

Main Results:

Demonstrated accurate distance measurements over extended ranges.
Showcased robust performance under low signal-to-noise ratio conditions.
Successfully distinguished echo signals from different excitation waves, confirming effective interference mitigation.

Conclusions:

The developed binary correlation-based ultrasonic ranging system offers reliable and accurate distance measurements.
The system's ability to handle diverse modulation schemes and low SNR conditions makes it versatile.
This approach effectively addresses cross-measurement interference in ultrasonic applications.