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Long‑Distance Laser Microphone System

Man‑portable laser‑based optical measurement system, realizes non‑contact long‑distance optical data acquisition without entering target site; optional enhanced functions available for custom project deployment.

Laser Vibrometry Long‑Distance Covert Listening
Long‑Distance Laser Microphone System scene diagram: field‑deployed laser‑vibrometry unit on tripod, invisible laser beam toward building window for remote optical data acquisition.

Overview

Long‑Distance Laser Microphone System. Single‑person operable portable optical measurement device, operators do not need to access the measured site. It performs long‑distance non‑contact optical measurement and data collection via medium vibration in field environment. Suitable for optical information acquisition between buildings, storefronts and office scenarios. Equipped with adaptive noise‑reduction algorithm to guarantee high‑fidelity acquired data, easy‑to‑operate and delivers precise measurement output. Selected enhanced features can be enabled for customized project requirements.

Working Principle

Laser Optical Measurement Workflow. The device emits laser to irradiate target scattering media with vibrating cavity. Sound‑induced micro‑vibration modulates reflected laser light. Received optical signals go through all‑digital demodulation circuit, adaptive noise reduction processing, to restore original measurement data. The high‑precision gimbal supports point‑selection focusing measurement for different targets.

Highlight Features

Adaptive Noise Reduction Intelligent algorithm filters environmental interference and improves measurement data fidelity.
Visual Display & Operation High‑definition display pad provides intuitive visual workflow for field measurement missions.
One‑click Focus & Ranging Simplified one‑button workflow to aim and lock onto measured targets for fast deployment.
One‑click Key‑info Marking Mark critical evidence‑grade information on‑terminal, with local video recording capability.
Wide Target Media Compatibility Supports multiple types of flexible scattering media with vibrating‑cavity physical properties.
High‑fidelity Data Reproduction All‑digital demodulation architecture ensures clean restoration of captured optical signals.
Precise Aiming Gimbal Motorized gimbal supports image‑based point‑selection aiming for complex field conditions.
Single‑Person Portable Deployment Lightweight field‑ready unit, easy transportation and setup without site entry requirement.

Specifications

Key Brief Parameters

  • Optical Measuring Range: 20 m ~ 500 m; Measurement Angle: ≤ ±30°
  • Sampling Frequency: 200 Hz ~ 5 kHz; Power Consumption: ≤25 W
  • Gimbal Rotation: Horizontal −180° ~ +180°, Tilt −25° ~ +45°
  • Data Output Format: Audio MP3, Video MP4; Optical Type: Laser
  • Power Supply: AC 220 V; Operating Temp: −10 ℃ ~ +40 ℃; Storage Temp: −25 ℃ ~ +65 ℃
  • Applicable Object: Multiple scattering materials with vibrating cavity
  • Full datasheet and optional enhanced‑function list available upon request