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NAVS-3000 
Compact Navigator 

Underwater Integrated Navigation Systems  

 NAVS-3000 is a new generation integrated navigation system. After obtaining the initial latitude and longitude, the device achieves self-alignment by sensing the Earth's rotational angular velocity for north-seeking.

The product features a titanium alloy pressure-resistant housing and integrates a high-performance phased array DVL and a high-resolution pressure sensor module. It supports combined positioning with DVL, GPS, and USBL, and outputs attitude, position, velocity, and depth information. With a standard pressure-resistant housing, it can be directly used for underwater navigation of AUVs/ROVs without any modifications.

The NAVS-3000 integrated navigation system employs an improved IMU solution and data fusion method, significantly enhancing the accuracy of attitude and heading. When combined with DVL, the navigation accuracy reaches 0.5% of the distance traveled under straight-line conditions, and 0.1% of the distance traveled during area mapping missions. The depth sensor has a resolution of 0.0005% of the full range and an accuracy of 0.05% of the full range.

NAVS-3000 ​

Key Features:

  • Compact size, high accuracy, autonomous north-seeking, immune to magnetic interference.
  • Straight-line navigation accuracy: ≤0.5% of distance; Z-shaped survey pattern accuracy: ≤0.1%.
  • Integrated high-resolution pressure sensor, 3000 m depth-rated version with 1.5 cm resolution.
  • Phased array DVL, navigation accuracy unaffected by sound speed variations.
  • Automatically switches to water-track mode when bottom-track is lost in deep water.
  • Supports USBL position aiding with automatic outlier rejection.
  • Built-in Wi-Fi module for configuration and data access.

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Overview

Performance 

NAVS-3000 is a new-generation integrated navigation system, designed for high-precision AUV / ROV underwater navigation.

  • Autonomous north-seeking: achieves self-alignment by sensing the Earth’s rotational angular velocity, without relying on magnetic fields.
  • Pressure-resistant design: titanium-alloy housing allows direct underwater deployment without modifications.
  • Core sensors: integrates a phased-array DVL and a high-resolution pressure sensor.
  • Combined positioning: supports DVL, GPS, and USBL integration, outputting attitude, position, velocity, and depth data.

  • Navigation accuracy: with DVL integration, achieves 0.5% of distance traveled in straight-line navigation and 0.1% of distance traveled during area mapping.
  • Depth measurement: pressure sensor resolution 0.0005% of full scale, accuracy 0.05% of full scale.
  • IMU and data fusion: enhances attitude and heading accuracy, ensuring stable underwater navigation.

Specifications

Specification Parameter
DimensionsMax. diameter: 193 mm, height: 277 mm
Weight in air14.2 kg
Max. operating depth3000 m (Optional: 300 m/6000 m)
External sensor supportGPS (NMEA0183)/USBL position system
Depth sensor accuracy±0.05% of full scale
Depth sensor resolution0.0005% of full scale (1.5 cm at 3000 m)
Attitude accuracyPitch/roll: 0.03° (RMSE)
Heading accuracy (moored, no DVL/GPS)0.25° (RMSE)
Heading accuracy (INS/DVL)0.25° (RMSE)
Travel distance error (Z-shaped survey)≤0.1% of distance
Travel distance error (straight line)≤0.5% of distance
Power supply24 V ±1 V

Applications


  • Deep-sea research, mapping, and sampling 
  • Pipeline and cable inspection, subsea infrastructure monitoring 
  • AUV/ROV autonomous navigation missions 
  • Regional ocean environmental monitoring 


Navigation Mode

SINS / DVL / GPS / Depth Sensor Integrated Navigation Mode

This is the default operating mode of the system. 

Features:

  1. When GPS velocity is valid, SINS integrates with GPS.
  2. When GPS is invalid, SINS integrates with depth sensor and DVL. If both water-track and bottom-track are valid, bottom-track velocity is used. In deep water, if only water-track is available, SINS integrates with water-track velocity.
  3. If both DVL and GPS are invalid, the system enters vertical gyro mode: velocity is zeroed, but accurate attitude is maintained.
  4. When valid USBL position is received, outliers are automatically rejected and navigation error is corrected.

AUV Communication & Navigation Kit

Compact Navigator & Underwater Acoustic Modem

Designed for Autonomous Underwater Vehicles (AUVs), the AUV Communication & Navigation Kit delivers high-precision navigation and reliable underwater communication in a unified solution.

  • NAVS-3000 Compact Navigator — Provides INS-based positioning, DVL velocity measurements, and depth data for precise real-time navigation.
  • UAC-08160X-OEM Underwater Acoustic Modem — Ensures stable, long-range underwater communication across multiple frequency bands.

Discover more

Documents

 

NAVS-3000 Datasheet  ​

NAVS-3000 Product Manual ​