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uWave USBL hydroacoustic modem

Data transmission and USBL navigation in one device
Underwater Communication and Navigation Laboratory
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Zima ultra-short baseline navigation system — general view
Data transmission

uWave USBL

uWave USBL is a device that combines the functions of hydroacoustic data transmission and an ultra-short baseline (USBL) navigation system.

Using uWave USBL modems, the user can: transmit arbitrary user data between uWave USBL, uWave Max and uWave modems in any combination, with simultaneous determination of the horizontal angle of arrival; locate uWave USBL, uWave Max and uWave modems in command mode by range and horizontal angle of arrival; send up to 9 short code-based telecontrol commands; request the depth, temperature and supply voltage of remote modems; and measure its own depth, temperature, roll and pitch angles.

Devices in the uWave family use a simple NMEA-like configuration protocol, and the supplied open-source uWaveLib (.NET) and uWave ALibs (Arduino) libraries make it as simple and fast as possible to integrate the modems into custom solutions. The monoblock design is patented (patent RU2659299C1).

Structurally, uWave USBL is housed in the same enclosure as the Zima2-B direction-finding antenna of the Zima2 USBL navigation system — the devices are outwardly indistinguishable. However, they are functionally different instruments: uWave USBL transmits arbitrary user data and determines range and angle to any uWave family modem, while Zima2-B is the direction-finding station of the Zima2 system, working with Zima2-R responder beacons.

  • Extremely small size and weight
  • Data transmission combined with USBL navigation
  • Communication range of up to 3000 m
  • Reliable data transmission at speeds of up to 314 bit/s
  • Code division of subscribers
  • Signal propagation time measurement
  • Highly reliable digital hydroacoustic communication
  • Low power consumption (Rx/Tx) 0.33/10 W
  • Open interface protocol
  • Built-in pressure/temperature sensor
  • Packet mode with guaranteed delivery (ALO — At-least-once)
  • Patented monoblock design
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Documentation
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DIMENSIONS (Ø x h)
64 x 128 mm
WEIGHT (dry)
0.44 kg
DEPTH RATING
300 m
MAX. ACOUSTIC COMMUNICATION RANGE1,8
3000 m
PAYLOAD DATA RATE2
78/156/314 bps
POWER CONSUMPTION Rx/Tx
0.33/10 W
SUPPLY VOLTAGE3,4
5 .. 12 V
DATA LINES VOLTAGE
0 .. 3.3 V
DATA LINES OUTPUT IMPEDANCE
1 kOhm
NOMINAL HORIZONTAL ANGLE-OF-ARRIVAL ACCURACY5
2°
MAX. TILT FROM VERTICAL COMPENSATED BY THE BUILT-IN INCLINOMETER (roll/pitch)
+/- 30°
WORKING CONE (from horizontal)
85°
CARRIER
20050 Hz
MAX. ACOUSTIC SOURCE LEVEL (in band)
175 dB re 1 μPa @ 1 m
BIT ERROR RATE
10-6
SNR5
-2 dB
MAX. RELATIVE VELOCITY
+/- 1 m/s
STARTUP TIME
100 msec
WORKING TEMPERATURE RANGE
-5 .. 50 °C
PAIRING INTERFACE6
UART 9600 bps
PAIRING PROTOCOL
NMEA 0183 PUWV
CABLE LENGTH6
0.5 m
SUBSCRIBER SEPARATION SCHEME2
20 code channels
TRANSMITTER BUFFER SIZE
127 bytes
COMMAND MODE
16 preset messages (9 for user applications)
SIGNAL PROPAGATION TIME MEASUREMENT RESOLUTION7
0.0001 sec
PACKET MODE
254 addresses with delivery notification, broadcast messages, packet size up to 64 bytes
DEPTH SENSOR RESOLUTION (local)9
0.01 m
DEPTH SENSOR RESOLUTION (remote)9
0.1 m

Data + navigation in one channel

User data transmission is combined with determining the horizontal angle and range to the counterpart device — no separate USBL station is needed.

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