TACNAV 3DTACNAV 3D ApplicationTACNAV 3DTACNAV 3D ApplicationTACNAV 3D Application
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The high performance fiber optic gyro-based TACNAV 3D Inertial Navigation System provides full three-dimensional navigation and an embedded GNSS. TACNAV 3D's modular tactical design means it functions as a standalone inertial navigation solution, and as the core of an expandable, multi-functional battlefield management system. TACNAV 3D also includes two-way Iridium® satellite communications for messaging and secure position reporting.

TACNAV 3D expands the battle-proven portfolio of TACNAV products by incorporating KVH’s highest performing Inertial Measurement Unit (IMU) to provide reliable 100% situational awareness even when GPS/GNSS is unavailable or jammed.

Providing extremely accurate heading, dead reckoning navigation and orientation, TACNAV 3D delivers complete situational awareness in GPS/GNSS-denied environments with greater accuracy at a lower cost than competing navigational systems. Compact and lightweight, TACNAV 3D is designed for the close confines of turreted and non-turreted vehicles. With its compact size, low weight and low power consumption, it is the ideal navigation and pointing solution for the digital battlefield.

The TACNAV 3D is controlled by the Arms Export Control Act (Title 22, USC Sec 2751 et seq.) and the International Traffic in Arms Regulations, ITAR, 22 CFR 120-130, and may not be exported from the United States or disclosed to a foreign person in the United States except as authorized by those regulations.

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Brochures & Datasheets

Document File Info
DATASHEET - TACNAV 3D PDF file 615 KB / 2 pg



The TACNAV 3D uses the KVH 1750 IMU, a 6 degree-of-freedom inertial measurement unit to measure orientation changes in all three axes. This information is combined with vehicle odometer data to continuously update position, latitude/longitude and altitude, when GPS/GNSS data is unavailable.


Even though TACNAV 3D has an embedded GPS/GNSS, its highly accurate inertial sensors (KVH’s high performance 1750 IMU) provide heading accuracy when GPS/GNSS signals are blocked, or unavailable due to terrain, urban environments or jamming.


TACNAV 3D is fitted with an Iridium® transceiver to transmit and receive vehicle position, waypoint, and target location to or from a command center or other vehicles. In addition, the TACNAV 3D can receive messages from the BMS to pass on to the command center via the Iridium short duration burst message function. TACNAV 3D can also receive and transmit both Ethernet and CANbus signals, and RS-422. 

The Integrated CommBox Modem (ICM) is the streamlined all-in-one belowdecks unit that drives the TracPhone V7-HTS. It features a browser-based user interface and a convenient iPhone® app for system status, updates, and support. Replacing a full rack of components required for competitors’ systems, the 2U-high ICM contains:
  • IP-enabled antenna control unit
  • CommBox™ Network Manager
  • High-throughput modem
  • Voice over IP (VoIP) adapter
  • Built-in Wi-Fi and Ethernet switch
  • Content storage and access for IP-MobileCast™ and Videotel™ training content
  • Support for over-the-air software updates for the ICM and antenna unit


  • Highly accurate full three-dimensional navigation in all terrains providing dynamic heading, pitch, and roll as well as altitude, distance and bearing to waypoint 
  • Designed to easily integrate with Battlefield Management Systems (BMS)
  • Built-in Iridium transceiver with short burst message capability to transmit and receive vehicle position, waypoint, and target location to or from a command center or other vehicles
  • Able to receive messages from the BMS to pass on to the command center via the Iridium short duration burst message function
  • Receives and transmits both Ethernet and CANbus signals, and RS-422
  • Horizontal and vertical positional accuracy even when GPS/GNSS is blocked, jammed or unavailable; inertial sensors not reliant on compass heading

Featured Options

  • External GPS/GNSS Interface
  • Universal Multilingual Display
    - Supports multiple languages
    - Night vision capable
  • Moving Map Display (MMD)
    -High bright display for outdoor viewing, and dims to support low-light tactical operations
    -Offers full functionality in multiple grid reference systems

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