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Underwater interferometric radar sensor for distance and vibration measurement
Publikationstyp
Conference Paper
Date Issued
2015-01
Sprache
English
TORE-URI
Start Page
72
End Page
74
Article Number
7127405
Citation
IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNet: 7127405 (2015-01)
Contribution to Conference
Publisher DOI
With the growing application of autonomous underwater vehicles (AUV) and underwater construction, i.e. robotic manipulator and maintenance systems, there is an increasing demand on precise underwater distance sensors. In this paper we present a low-cost, short-range and contactless sensor which uses electromagnetical (EM) waves for measuring distances underwater. The measurement system is based on interferometric radar applying a six-port interferometer and using EM waves at a frequency of 2.4 GHz. Measurement series in fresh water have been carried out showing an precision of below 100μm up to a distance of 35mm with only 8dBm of transmit power. Due to the high measurement rate the system can also be employed for vibration analysis. Additionally, by connecting a commercial 2.4 GHz data transceiver, it is imaginable for the system to be simultaneously used for high data rate communication between, e.g. AUV and unmanned underwater platforms (UUP).