RedNODE acoustic navigation receiver

RedNODE is an acoustic navigation receiver. Like the GNSS receiver, it calculates its absolute geographic position, depth, and temperature.

Operating the RedNODE in many ways similar to the work with GPS/GLONASS receiver, but instead of GNSS satellites, it needs four RedBASE sonobuoys deployed that allow an unlimited number of RedNODE receivers to function at the same time and at the same place.

Small size, low power consumption and ease of use make RedNODE an ideal solution for mini-ROVs and AUVs and for work-class ROVs.

Key features:

  • Completely acoustically passive device 3D-position in absolute geographic coordinates (WGS-84)
  • Simultaneous positioning for an unlimited number of RedNODE receivers
  • Small dimensions
  • Acoustic range up to  3000 m
  • Reliable and noise-immune technology of digital broadband acoustic communication
  • Position update rate up to 1 Hz
  • Low power consumption, 5V 70 mA
  • GPS/GLONASS receiver emulation (NMEA 0183 GGA, RMC, MTW)
  • 300 m depth rating

Technical specification:

Dimensions Ø64×62 mm
Weigh (dry) 0.31 kg
Acoustic range (energetic) 3000 m
Frequency band 10-30 kHz
Depth rating 300 m
Nominal 2D accuracy, 2DRMS 0.84 m
Nominal depth accuracy 0.1 m
Bit error rate 10^-6
Start-up time 100 ms
SNR -6 dB
Wire length 1.2 m
Relative velocity (Rt-Tx) +/- 1.8 m/s
Temperature range -5..50 ˚С
Coordinate system WGS-84
Nominal time to first position fix 28 s
Nominal position update rate 1 Hz
Current consumption 70 mA
Supply voltage  5 V
Time synchronization accuracy (for GGA sentence) <50 ms
GPS/Glonass emulation GGA, RMC, MTW
Protocol NMEA 0183 PTNT
Interface UART 9600 bit/s
Data line voltage 0..3 V
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