Equipment & Software for Geophysical Surveys: Design, Manufacture, Support, Supply

Front and tail buoys

Main features:
  • Easy and robust
  • Two options of GNSS receivers
  • RTK and PPK capabilities
  • Centimeter level positioning accuracy
  • Flashing lights for 24/7 operations
  • Continuous RAW GNSS data logging
Price : on request
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Modern ultra-high resolution marine seismic surveys provide high-density spatial coverage with up to 0.5 m bin size. Such surveys require accurate positioning of the source-receiver spread to achieve desired resolution.

Front and tail buoys is a crucial part of 2D and 3D high-resolution marine seismic surveys, as they provide high accuracy control of streamer position, its towing depth and steering.

GEODEVICE manufactures robust and easy-to-use buoys, equipped with water-resistant multiband GNSS receivers with radio modems for wireless communication with onboard station.

GNSS receivers placed on front and tail buoys enable highly accurate hydrophone positioning with RTK or PPK modes, allowing for real-time coverage control.

The streamer fasteners, placed every 10 cm, keep the receiver cable at a pre-determined towing depth, allowing for the easy implementation of constant or slanted acquisition techniques using the buoys.

Materials Stainless steel and polymer
Dimensions 1125×290×1590mm + 1000mm pole with GNSS receiver
Weight 30 kg with GNSS receiver, battery and flashing lights
Satellite signals GPS L1C/A, L2C; GLONASS L1OF, L2OF; Galileo E1B/C, E5b; BeiDou B1I, B2I; QZSS L1C/A, L1S, L2C
SBAS signal reception WAAS, EGNOS, MSAS, GAGAN, SDCM
Horizontal position accuracy SBAS: 1 m
RTK: 0.01 m + 1 ppm
Communication with onboard or onshore GNSS base station 433 / 868 / 900 / 915 MHz and optional GSM modem for broadcasting RTK positioning and receiving corrections
RTK mode rover, base or moving base
Radiolink range up to 2 km or longer with larger antenna
Autonomy in radio mode 5 days with 95Wh battery or longer with larger battery
RTK mode rover
Connectors USB
Wireless connection Wi-Fi, Bluetooth
Offline position logging track in txt and RAW GNSS data in RINEX with update rate up to 10 Hz
Memory built-in microSD up to 32 GB
Flash light yes
Operating temperature -20 to +65 ºC
Power 3.7 VDC
Battery Li-ion, 3.7V, 95Wh