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Military Targeting Systems and the Development of Inertial Systems

Problem Military targeting systems require maximum accuracy at all times and under all conditions. These systems can be hand-held or mounted on various vehicles or weapons, but they all must perform reliably and consistently in order to meet the needs of the warfighter. Heading and elevation are critical factors in accurate targeting systems. The complex […]

Adaptive Calibration Technology in Digital Compasses and Inertial Systems

Summary: Conventional digital magnetic compasses require a complex and cumbersome “in-field” calibration process. This calibration, commonly referred to as the “Kabuki Dance”, is not embraced by most users including the military and is often performed improperly, incompletely, or sometimes not at all. This results in diminished sensor performance and poor overall accuracy, in targeting and […]

Sparton AHRS Wins Again

Attitude Heading Reference System (AHRS)

Sparton Corporation was recently selected by another major government contractor to be the inertial system supplier for their navigation system. During the selection process, the contractor performed extensive testing of multiple MEMS-based (Micro-Electro-Mechanical Systems) AHRS (Attitude Heading Reference Systems). The Sparton AHRS-8 system achieved the design win, having distinguished itself from the competition by demonstrating […]

What is an IMU?

An Inertial Measurement Unit, commonly known as an IMU, is an electronic device that measures and reports orientation, velocity, and gravitational forces through the use of accelerometers and gyroscopes and often magnetometers. IMUs are a main component of the inertial navigation systems used in aircraft, unmanned aerial vehicles (UAVs) and other unmanned systems, as well […]

What is an AHRS?

An Attitude Heading and Reference System, better known as an AHRS, is a 3-axis sensor system that provides real-time 3D attitude position – pitch, roll, and heading. The primary function then of an AHRS is to provide orientation data. AHRS are designed to replace traditional gyro-based instruments and to provide superior reliability and accuracy. Some […]

Sparton Releases Updated Firmware

Improved In-Field Calibration, Superior Performance! Sparton Navigation and Exploration has released new firmware for its industry-leading inertial systems. These firmware upgrades (Version 4.2.10) improve the in-field calibration for Sparton’s AHRS-8, GEDC-6E, and DC-4E. The updated firmware will provide users with the following features: Improved 3D in-field calibration for enhanced accuracy Created a new in-field calibration […]

Setting Our Sights with the New and Improved Website

Welcome and thank you for visiting our new and improved website – www.spartonnavex.com.  We are excited for this launch and hope you are as well.  This website offers some great improvements for the user experience.  Some of those highlights are: Responsive design that adapts for any screen resolution, including mobile Easy, intuitive navigation More streamlined […]

In-Field Calibration

Inertial systems do not recalibrate on their own if the magnetic environment changes. The magnetic environment is unpredictable and depends on so many factors that it would not be practical to have the inertial system perform recalibrations continuously during operation. If the inertial system calibration is performed in a poor magnetic environment, the inertial system measurements will be poor.

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