There is so much terminology when talking about navigation products that it can be confusing. What is an Attitude Heading Reference System (AHRS) and how does it differ from an Inertial Navigation Systems (INS)? Some products have GPS integrated and others don’t. Welcome to Compass Terminology 101. Let’s go over the basics of these terms […]
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 […]
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 […]
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 […]
As enhanced versions of our GEDC-6 and DC-4 products, Sparton’s gyro enhanced attitude and heading system, the GEDC-6E and tilt compensated attitude and heading system and the DC-4E have improved in-field calibration algorithms that offer higher accuracy, reduced convergence time and more.
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.
The operational environment of the device will present a wide variety of magnetic anomalies that must be considered. Traditional inertial system compensation procedures cannot predict or correct for external environmental magnetic disturbances. The operational environment will include local magnetic disturbances occurring naturally and from manmade objects.