Remote optical detection of ground vibrations

Shroll, Robert M.; Peter, Benjamin St.; Richtsmeier, Steven C.; Tannian, B.; Jensen, E. P.; Kielkopf, John F.; Pereira, W. E.

doi:10.1117/12.2190988

Cited by 1 publication

(2 citation statements)

References 3 publications

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“…, may be observed from Equation (7). This value corresponds to the Doppler frequency shift, referred to as f d .…”

Section: Laser Echo Signal Doppler Effectmentioning

confidence: 99%

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Laser Remote Sensing of Seismic Wave with Sub-Millimeter Scale Amplitude Based on Doppler Characteristics Extracted from Wavefront Sensor

Luo,

et al. 2024

Photonics

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Laser remote sensing of earthquake waves has the potential to be used in many applications. This article shows a Doppler model for laser remote sensing of seismic waves based on a wavefront sensor. The longitudinal vibration wave is analyzed using remote sensing, guided by theoretical principles. To determine the magnitude of ground vibration, we employ the method of wavefront phase change analysis, utilizing a continuous laser emitting light with a wavelength of 635 nm to illuminate the ground target. The ground vibration amplitude within the range of 0.12–1.18 mm was examined, confirming the reasonableness of the Doppler model. Simultaneously, the experimental findings indicate that the system exhibits a certain enhancement in detection accuracy compared to the conventional laser remote sensing detection technique. This approach can detect vibration signals at a sub-millimeter scale level, with an accuracy of 1% to 2%. The approach can fulfill the requirements for detecting seismic waves with low frequencies.

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“…, may be observed from Equation (7). This value corresponds to the Doppler frequency shift, referred to as f d .…”

Section: Laser Echo Signal Doppler Effectmentioning

confidence: 99%

“…Recently, researchers have employed high-resolution optical remote sensing data to examine ground vibration waveforms [5] and achieved distant identification of seismic waves and subterranean formations. Optical remote sensing technology can identify minute vibrations, such as those caused by landmines [6] and tiny seismic waves [7].…”

Section: Introductionmentioning

confidence: 99%

Laser Remote Sensing of Seismic Wave with Sub-Millimeter Scale Amplitude Based on Doppler Characteristics Extracted from Wavefront Sensor

Luo,

et al. 2024

Photonics

View full text Add to dashboard Cite

show abstract

Remote optical detection of ground vibrations

Cited by 1 publication

References 3 publications

Laser Remote Sensing of Seismic Wave with Sub-Millimeter Scale Amplitude Based on Doppler Characteristics Extracted from Wavefront Sensor

Laser Remote Sensing of Seismic Wave with Sub-Millimeter Scale Amplitude Based on Doppler Characteristics Extracted from Wavefront Sensor

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