Directional wave, currents and environmental monitoring from navigation and hydrography buoys: An introduction to Motus
Paper i proceeding, 2018

Aanderaa’s Directional Wave Sensor, Motus (movement in Latin) is a compact, low power accelerometer-based sensor designed to accurately measure multi-spectrum directional waves from standard hydrography and navigation buoys. An inbuilt feature is its flexibility as it can be used on variety of buoy types and does not require a center of gravity placement. An external compass can also be integrated if magnetic disturbances are present near the sensor. To date, two buoys, Xylem’s YSI EMM 2.0 and Tideland SB-138P, have been tested with Motus. Here we present field data that demonstrate excellent agreements between wave measurements from Motus sensors fitted on the two buoys, and a dedicated circular wave measurement buoy (Datawell Waverider MKIII) The Xylem buoys were also equipped with Aanderaa current sensors to demonstrate the multi-parameter features and capabilities of the buoy platforms. The maximum recorded average wave heights were above 7 m. Since the DCPS can run in both narrowband and broadband modes, we also demonstrated that measuring currents in broadband mode from a moving platform results in noisy and ultimately unusable current velocity data.


Anders Tengberg

Chalmers, Mekanik och maritima vetenskaper, Maritima studier, Maritim miljövetenskap

Greg Weiss

Xylem Analytics

Damian Roach

Xylem Analytics

2018 OCEANS - MTS/IEEE Kobe Techno-Oceans, OCEANS - Kobe 2018


2018 OCEANS - MTS/IEEE Kobe Techno-Oceans, OCEANS - Kobe 2018
Kobe, Japan,


Medicinsk laboratorie- och mätteknik

Marin teknik

Annan elektroteknik och elektronik



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