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Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR.

Yunpeng Cai1, Jihui Ma1, Wenfa Yan1

  • 1Key Laboratory of Transport Industry of Big Data Application Technologies for Comprehensive Transport, Ministry of Transport, Beijing Jiaotong University, Beijing 100044, China.

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Summary
This summary is machine-generated.

This study introduces a novel aircraft detection system using Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR). The system identifies low-frequency seismic vibrations caused by aircraft, revealing the Doppler effect for directional analysis.

Keywords:
aircraft detectiondoppler effectseismic vibration signalΦ-OTDR

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Area of Science:

  • Geophysics
  • Aviation Safety
  • Sensing Technology

Background:

  • Aircraft detection is crucial for aviation safety and management.
  • Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) is a versatile sensing technology.
  • Existing detection methods have limitations in cost, distance, and environmental resilience.

Purpose of the Study:

  • To present a novel aircraft detection system utilizing Φ-OTDR technology.
  • To analyze the seismic vibration signals generated by aircraft.
  • To explore an alternative to traditional runway or airborne detection methods.

Main Methods:

  • Implementation of a Φ-OTDR based seismic vibration detection system.
  • Application of Chebyshev filtering to mitigate noise in vibration signals.
  • Utilizing short-time Fourier transform for time-frequency analysis of acoustic signals.

Main Results:

  • Aircraft-induced seismic vibrations are predominantly low-frequency (< 5 Hz).
  • The system successfully recorded time delays of vibration signals along the optic fiber.
  • Time-domain analysis demonstrated the Doppler effect, indicating aircraft approach and departure.

Conclusions:

  • Φ-OTDR offers a cost-effective and robust solution for long-distance aircraft detection via seismic vibrations.
  • The characterized low-frequency seismic signals and Doppler effect provide valuable data for aircraft monitoring.
  • This method presents a unique approach to aviation surveillance by analyzing ground-level vibrations.