ZimaBASE USBL transmitting/direction finding antenna

ZimaBASE is an ultrashort baseline transmitting/direction finding antenna.

The device uses a fixed-length code-division signal to provide direction and distance detection and to send remote control commands to the beacon-responders and receive telemetric data from them. When using an external GNSS receiver and Compass, the device allows you to determine the absolute coordinates of the responders. Up to 32 control commands for 23 beacon-responders.

An ideal solution for determining the direction and distance to underwater objects. The extremely small size, low power consumption and ease of use make the Zima direction finding system an ideal solution for working with autonomous and remote controlled devices as well as determining the relative position of divers.

Key features:

  • Minimum weight and dimensions
  • Operating range up to 8000 m
  • Highly reliable digital hydroacoustic communication resistant to multipath propagation
  • Low power consumption  0.3 / 25 W (Rx / Tx)
  • Up to 23 beacon-responders
  • The patented technology of simultaneous navigation

Technical specification:

Dimensions Ø64 х 128 mm
Weight (dry) 0.44 kg
Acoustic range (energetic) 8000 m
Depth rating 40 m
Nominal depth accuracy 0.1 m
Frequency band 6-18 kHZ
BER 10^-6
Start-up time 100 ms
SNR -6 dB
Built-in temperature sensor accuracy 0.1 ˚С
Wire length 1.5 m
Relative velocity (Rt-Tx) +/- 1.8 m/s
Temperature range -5..50 ˚С
Power consumption (TX) 25 W
Power consumption (RX) 0.3 W
Power supply 4-12 V
Interface UART 9600 bit/s
Protocol NMEA 0183 + PZMA
Data line voltage 0..3 V
Code division scheme (commands/subscribers) 32/23
Nominal accuracy of determining the horizontal angle
Nominal accuracy of distance determination 0.3 m
Maximum tilt of the device relative to the vertical line compensated by the built-in inclinometer (pitch and roll) +/- 30˚
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