레이저 레이다를 이용한 원격 음향 감지: Q2가 진동 및 음향 분석을 재정의하는 방법

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. 

Working on a remote acoustic or NVH measurement?

Tell us the target, frequency range, stand-off distance and whether you need point, full-field or 3D vibration data. We will help identify the practical workflow.

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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:

  • Safety: Accessing elevated, confined, or hazardous environments requires shutdowns and exposes staff to safety issues.
  • Integrity: Sensors alter mass and boundary conditions, distorting frequency response functions (FRF) or modal analysis results.
  • Coverage: Point-by-point measurements cannot capture full-field behavior efficiently, limiting insight into complex structures.

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.


 

Technical Specifications: What the Q2 Delivers

Vibration maps for detected peak frequencies

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:

  • Range: Up to 50 meters, supporting remote inspection of large assets.
  • Accuracy: Tens of microns, ensuring metrology-grade results.
  • Speed: Captures 25,600 points per second, delivering dense point clouds in real time.
  • Dynamic Sensing: Records vibration data across 65 points simultaneously, supporting advanced modal analysis and NVH workflows.
  • Micro-Scanning Elevation: Reveals fine structural details, ideal for aerospace panels, automotive components, or building façades.
  • Noise Reduction: Advanced Doppler vibrometry filters allow precise measurements in acoustically complex environments.

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 →

 

Where the Q2 Laser Radar Makes an Impact

The Q2 Laser RADAR addresses a wide range of technical use cases:

  • NVH Engineering and Modal Analysis

Full-field vibration maps reveal resonance, damping, and aeroelastic effects in automotive and aerospace structures without mass loading. 

  • Industrial Monitoring and Preventive Maintenance

In rotating machinery, transformers, or production lines, the Q2 delivers remote monitoring (without downtime) and supports early fault detection. 

  • Building Acoustics and Environmental Monitoring

Researchers studying façade vibration, traffic-induced noise, or barrier performance access full-field acoustic behavior without microphone arrays. 

  • Security and Defense

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

Q2 Laser Radar enables NDT capturing of high-resolution vibrometry data

 

Field-Tested Performance

Transformer and Substation NVH
  • Remote vibration monitoring on energized transformer tanks
  • No downtime required for inspection
  • Eliminated cabling and sensor installation overhead
  • Delivered repeatable, reliable data for condition monitoring
Building Acoustics and Façade Surveys
  • Full-field mapping of traffic-induced façade vibration
  • Identified localized resonance modes missed by microphones
  • Combined 3D laser scanning + remote vibrometry
  • Achieved displacement measurements down to micron-level detail

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

Q2 Laser Radar reveals vibrations on the aluminum aircraft part in real time


Looking Ahead: The Future of Laser RADAR

The future of remote sound sensing will be defined by three advances:

  • Laser metrology for sub-micron precision across large structures
  • Quantum-limit radar to detect weaker vibration and acoustic signals
  • AI-driven analysis to automate mode identification & speed interpretation

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.

 

Final Thoughts

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. 

 

원격 음향 감지 질문

원격 표면 진동 맵과 동기화된 음향 기준을 결합해 구조 운동과 음장을 연결합니다.

Laser RADAR는 원격 음향 분석에서 무엇을 포착하나요?

Laser RADAR는 보이는 패널, 막, 인클로저 및 구조물의 시선 방향 진동 속도를 원격으로 포착합니다. 음장이 대상을 가진하면 측정된 표면 운동이 구조물의 응답 위치와 형태를 보여 주며, 음향 엔지니어링을 위한 공간 진동 형상과 속도 데이터를 제공합니다.

표면 진동은 음향 분석에 어떻게 도움이 되나요?

표면은 모드, 경계 조건, 재료와 가진에 따라 소리를 방사하거나 받아 진동합니다. 여러 지점을 동시에 측정하면 공간 패턴, 공진 영역과 과도 거동을 볼 수 있습니다. 음압, 운전 차수 또는 알려진 가진과의 상관이 필요하면 마이크, 힘, 회전 속도 또는 시간 기준을 결합합니다.

Q2는 원격 음향 측정에 무엇을 제공하나요?

Q2는 65개 동시 광학 채널을 제공하고 20배 공간 오버샘플링으로 최대 1,300개 측정점을 지원합니다. Q-Series는 최대 ±155 mm/s의 진동 속도를 측정하며 데이터를 실측 형상에 배치할 수 있습니다. 광학 접근, 반사 신호, 거리, 운동 대역과 기준 품질이 결과를 결정합니다.

Laser RADAR와 마이크는 어떻게 함께 작동하나요?

Laser RADAR는 고밀도 비접촉 표면 운동 데이터를, 마이크는 동기화된 공기 중 음압과 음압 레벨 기준을 제공합니다. 공통 시간, 좌표 및 교정을 통해 음장과 원격 구조 운동을 연결하고 음원 식별, 전달 경로 분석 및 음향 설계를 지원합니다.

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