Tag: GNSS Education

The incredible but imperfect mechanics of measuring pseudorange — and how we get closer to perfection Once a technology has been around long enough, you start to take it for granted. It simply becomes a part of everyday life — as inconspicuous as the air we breathe. In many ways, that’s already happened with GPS […]

Whether collecting location data for tasks like urban planning and underground pipe location or measuring land for property documentation and construction planning, GNSS correction services are not just useful but indispensable.  But, not all GNSS correction services are made equal. How does NovAtel measure up? In this NovAtel review, we review NovAtel’s features and share […]

The World Geodetic System (WGS) is a standard that defines Earth-centered, Earth-fixed (ECEF) models, Earth gravitational, and World Magnetic models. In 1983, a new realization of WGS—WGS84—was developed from modifications of the Navy Navigation Satellite System (NNSS). Today, that realization is used worldwide for global positioning and navigation in automotive and mobile devices. This article […]

Geodetic reference datums are central to geospatial positioning applications such as Global Positioning System (GPS) and Geographic Information Systems (GIS), forming the foundation for geospatial mapping and inertial navigation systems. The first of these reference datums, the North American Datum of 1927 (NAD27), was published in the 20th century, but since then, datums have been […]

Learn about the differences between loose and tight coupling in GNSS, and why tight coupling provides greater precision to power more reliable solutions.

From Earth, the sun looks like a steady celestial presence, a small but powerful speck that reliably shares its light day in and day out. But a closer look at our central star reveals something far less steady and settled. This is especially evident during the solar maximum, a period of peak activity in which […]

The North American Datum of 1983, or NAD83, is a crucial system used for mapping and navigation across North America. It was developed to replace the older NAD27 and marked a significant upgrade by integrating modern satellite technology.  This change completely revolutionized fields like construction surveying and geospatial analysis. Before NAD83, professionals relied on traditional […]

The International Terrestrial Reference Frame (ITRF) is a reference frame for earth sciences and global positioning derived from the International Terrestrial Reference System (ITRS). The ITRF is approved by the International Association of Geodesy (IAG) to serve as a stable reference to measure Earth's deformation and crustal motion. The IAG also recommends ITRF as the […]

Advancements in location technology have catalyzed fields from agriculture to surveying and automated vehicles. From inertial navigation systems to RTK technology, ultra-precise location information has unlimited applications. However, sensors can be faulty, which is why proper calibration for GNSS, INS, & RTK base stations is critical.  Calibration is a crucial aspect of eliminating errors present […]

Whether navigating drones over vast agricultural landscapes or guiding survey robots through intricate urban environments, the accuracy provided by RTK-enabled devices is unmatched.  In the realm of precision location and navigation, RTK (real-time kinematic positioning) has emerged as an indispensable technology, revolutionizing our ability to navigate with unparalleled accuracy.  In this guide, we’ll take a […]