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CHC Navigation | CHCNAV APACHE 4

Autonomous hydrographic and bathymetric surveys USV

The APACHE 4 is an Unmanned Surface Vehicle (USV) that supports a wide variety of Acoustic Doppler Current Profiler (ADCP) systems available on the market. It offers an unmanned operation solution with a shallow draft, high navigational accuracy and stable hovering for hydrologists when measuring water flow velocity and discharge of a current section.

  • CHC Navigation | CHCNAV APACHE 4
CHC Navigation | CHCNAV
599 Gaojing Road, Building D
201702 Shanghai
China
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Description

Key features

  • ADVANCED NAVIGATION CONTROLLER

    Adaptive water flow straight-line and hovering technology

    The APACHE 4 control system enables to navigate straight along the cross-section according to the profile view when the flow rate, turbulence, etc. change. The hovering technology can make APACHE 4 hover stably in the turbulent flow at the start and end points of ADCP observation, thereby improving the accuracy of flow estimation.

  • COMPATIBLE WITH COMMON ADCP

    Versatile. Carries up to 30 kg of payload

    The APACHE 4 central access shaft design provides unmanned cross-sectional flow measurement solutions for the leading ADCPs on the market. The APACHE 4 is particularly suited for hydrologists using ADCP sensors such as the M9, RTDP 1200, RiverPro and RiverRay who are looking for an integrated, portable, and affordable unmanned solution. It does not only carry the ADCP, but also provides its positioning, orientation, power, waterproofing, network and 4G transmission solutions.

  • BUILT-IN SINGLE BEAM ECHO SOUNDER

    Expand your unmanned survey capability

    Single beam sounding data can be used to verify the accuracy of ADCP bottom tracking data, and even fed directly into the ADCP flow measurement software to compensate for the unavailability of ADCP data, and at the same time provide water depth profile data associated with the flow velocity profile measurement.

  • SMART POSITIONING AND NAVIGATION

    Interrupted positioning with GNSS+IMU

    APACHE 4 provides stable position and heading to the ADCP and autopilot. Its IMU sensor ensures the availability of position data even during momentary GNSS signal loss. The obstacle avoidance radar system and live video feed ensure safe operations in case of loss of visibility or difficult environmental conditions. Completely autonomous, the APACHE 4 is safely operated from the shore. The AutoPlanner and HydroSurvey software suite allows the operator to define the entire mission, from the survey area to the export of the results.

 

Overview

The APACHE 4 is an Unmanned Surface Vehicle (USV) that supports a wide variety of Acoustic Doppler Current Profiler (ADCP) systems available on the market. It offers an unmanned operation solution with a shallow draft, high navigational accuracy and stable hovering for hydrologists when measuring water flow velocity and discharge of a current section.

Designed for the efficient hydrographic, bathymetric, and hydrological surveys, the APACHE 4 USV brings together the best of high-accuracy positioning and automated navigation control technology, built around the operator's habits when conducting ADCP hydrographic cross-section flow measurements.The built-in adaptive water flow and hovering navigation technology significantly improves the accuracy of flow estimation. Even when GNSS positioning might be degraded by obstructed environments, the internal GNSS+IMU module continues to provide reliable position and heading for the ADCP and autopilot controller.

Specifications

  • Length [m]
    1.2
  • Width [m]
    0.75
  • Height [m]
    0.3
  • Min. weight of USV in air [kg]
    9
  • Max. Weight of USV in air [kg]
    39
  • Portable
    Y
  • Draft [m]
    0.1
  • Number of thrusters
    2
  • Thruster specifications
    Electric type, brushless DC, veering without steering engine, max. motor power 7000 rpm
  • Chassis
    With separate bracket to hold the hull
  • Operational Area
    Lakes, Inland Rivers, Coastal Areas
  • Launch and Recovery System
    Single person launch; Auto-return to home point while low battery and signal loss
  • Max. speed [kn]
    9.7
  • Min. crew size
    1
  • Min. required number of surface computers
    1
  • Max. Remote Operating Range {m}
    1000
  • Available size of storage room
    16 GB
  • Max. WMO seastate
    2
  • Navigation sensors - standard
    Integrated GNSS board with IMU for auto mode
  • Navigation sensors - optional
    Remote controller for manual mode
  • Payload sensors - standard
    D230 single beam echo sounder
  • Payload sensors - optional
    ADCP
  • Propulsion
    2 propellers
  • Energy Source
    Li-ion Battery
  • Propulsion Power
    700 rpm
  • Endurance at nominal power [hr]
    2 x 2 hours @ 2m/s (running on 2 battery sets)
  • Type of Communication
    Network bridge, 4G, UHF, video
  • Max. Baud rate [Mb/s]
    115200
  • Data sent to shore
    Network bridge or 4G for echo sounder data and ADCP data, real-time video and RTCM corrections
  • Auto- control
    Yes
  • Control parameters sent to the USV
    Navigation route for auto mode
  • Emergency recovery procedure
    Auto return back to home point while low battery or signal loss
  • Applications
    Bathymetric survey and hydrographic surveying in Channel, river, lake, offshore construction; Dredging; Site selection of Dam, hydro power station.
  • Distinguishable features
    Portable; Single personal operator; Absolute Linear Technology; Stable hovering technology; Adaptive water flow straight line technology; Integrated GNSS board with IMU for advanced navigation controller; compatible with the most common ADCPs; built-in echo sounder;
  • Commercial Options
    From Distributors

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