For NVH engineers, acoustics researchers, industrial monitoring teams, and building security specialists, the challenge of measuring vibration and sound has always been one of trade-offs.
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Traditional tools, such as accelerometers, microphones, and strain gauges, can provide valuable point data, but they are:
- Intrusive
- Time-consuming to install
- And often alter the dynamics they are meant to observe
In high-stakes environments such as aerospace structural testing or transformer monitoring, those limitations introduce risk, cost, and uncertainty.
This is where non-contact sensing, and specifically Laser RADAR combined with optical vibrometry, is helping to redefine the field we work in.
This article explores how laser-based remote sound sensing works, why it matters, and how organisations are using Ommatidia’s Q2 Laser RADAR platform.
Why Non-Contact Vibrometry Matters
Traditional accelerometer or microphone-based methods face three critical issues: Using interferometry and FMCW LiDAR principles, the Q2 measures displacement, vibration, and acoustic signatures remotely. This approach improves accuracy and enables large-scale surveys that are impractical with conventional sensors. Vibration maps for detected peak frequencies The Q2 Laser RADAR is designed for applications that demand precision and scalability. It integrates high-accuracy 3D metrology with advanced vibration sensing to replace multiple instruments with a versatile platform. Key specifications include: The Q2 also integrates seamlessly with Industry 4.0 architectures, offering autofocus, angular scanning, and an RGB camera for intuitive programming and visualization. Learn More About the Q2 Laser RADAR → The Q2 Laser RADAR addresses a wide range of technical use cases: Full-field vibration maps reveal resonance, damping, and aeroelastic effects in automotive and aerospace structures without mass loading. In rotating machinery, transformers, or production lines, the Q2 delivers remote monitoring (without downtime) and supports early fault detection. Researchers studying façade vibration, traffic-induced noise, or barrier performance access full-field acoustic behavior without microphone arrays. Remote sound sensing provides standoff monitoring capabilities for high-security facilities, enabling vibration and acoustic analysis. Q2 Laser Radar enables NDT capturing of high-resolution vibrometry data These examples highlight how the Q2 Laser RADAR provides non-intrusive, scalable, and high-resolution insights. Explore More Applications Here → Q2 Laser Radar reveals vibrations on the aluminum aircraft part in real time The future of remote sound sensing will be defined by three advances: With improvements in FMCW LiDAR and real-time point cloud processing, combined with vibrometry algorithms, systems like the Q2 will deliver richer datasets, faster test cycles, and greater sensitivity. This makes Laser RADAR a core tool for NVH, acoustics, and structural monitoring. For teams responsible for vibration testing, modal analysis, structural health monitoring, or building acoustics, the Q2 Laser RADAR represents a change in capability. By unifying optical vibrometry with high-speed laser radar scanning, it delivers the precision and efficiency needed for today’s most demanding projects. To learn more about demonstrations, on-site trials, or integration with your current metrology and analysis workflows, contact our experts at Ommatidia. Visit ommatidia.tech or email sales@ommatidia.tech. Use remote surface-vibration maps and synchronized acoustic references to connect structural motion with the sound field. Laser RADAR captures the line-of-sight vibration velocity of visible panels, membranes, enclosures and structures from a distance. When an acoustic field excites the target, the measured surface motion reveals where and how the structure responds, providing spatial vibration shapes and velocity data for acoustic engineering. A vibrating surface radiates or responds to sound according to its modes, boundary conditions, material and excitation. Measuring many locations at the same time helps teams see spatial patterns, resonant regions and transient behaviour that a single point can miss. Combine the optical motion record with a microphone, force, speed or timing reference when the task requires correlation to sound pressure, operating order or a known excitation. The validation plan must define coordinates, synchronization, bandwidth and the quantity being compared. Q2 provides 65 simultaneous optical channels and supports up to 1,300 measurement points using 20× spatial oversampling. Simultaneous capture is useful when an event is transient, non-repeatable or changes between acquisitions. Q-Series systems measure vibration velocity up to ±155 mm/s, and the data can be placed on measured geometry for spatial interpretation. These specifications do not replace a feasibility check: optical access, surface return, working distance, motion bandwidth and reference quality determine the test result. Laser RADAR supplies dense non-contact surface-motion data while microphones supply synchronized airborne sound pressure and level references. Together they connect the sound field to the motion of the remote structure, with shared timing, coordinates and calibration supporting source identification, transfer-path analysis and acoustic design decisions.
Technical Specifications: What the Q2 Delivers
Where the Q2 Laser Radar Makes an Impact
Field-Tested Performance
Transformer and Substation NVH
Building Acoustics and Façade Surveys
Looking Ahead: The Future of Laser RADAR
Final Thoughts
Remote sound sensing questions
What does Laser RADAR capture in remote acoustic analysis?
How can surface vibration support acoustic analysis?
What does Q2 add to remote acoustic measurements?
How do Laser RADAR and microphones work together?
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