Particle Motion Sensor

Low-Frequency particle motion sensing

The M20 family is a group of sensors that measure particle motion with high sensitivity and good directivity down to very low frequencies.

GeoSpectrum’s particle motion sensors are accelerometer-based and are used to measure 2D or 3D particle motion or as a low-frequency directional hydrophone in a broad range of environments—from within 1 m of an air gun to quiet ocean environments.

Because the sensor maintains good directivity to very low frequencies, it also supports acoustic applications requiring good low-frequency bearing detection in a very small package.

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Description

The M20 is an excellent choice for applications benefiting from direct measurement of particle motion. GeoSpectrum’s particle motion sensors are suitable for a variety of different applications including marine mammal detection, ocean environmental monitoring, antisubmarine warfare (ASW), marine surveillance, offshore oil and gas monitoring, and offshore wind farm monitoring.

Sensor
Directional Particle Motion Sensors
Compass-Resolved Particle Motion Outputs
Omnidirectional Hydrophone
Digital Compass
*Usable Frequency Range
Depth Rating
Size
Spec Sheet PDF Download
M20-105
3D - X, Y, Z
Optional
Y
Y
2 Hz - 3 kHz
1000 m
127 mm diam., 231 mm length
M20-105
M20-040
3D - X, Y, Z
N
Y
N
10 Hz - 3 kHz
300 m
64 mm diam., 176 mm length
M20-040

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