GNSS (Global Navigation Satellite System)
The generic term for satellite-based positioning systems providing global coverage for outdoor tracking. Encompasses GPS, GLONASS, Galileo, and BeiDou constellations. Used primarily for outdoor industrial applications like vehicles in yards, shipping containers in ports, and construction equipment on job sites. Signals don't penetrate buildings requiring alternative technologies for indoor tracking.
Generic term for satellite-based positioning systems including GPS (USA), GLONASS (Russia), Galileo (EU), and BeiDou (China). GNSS provides global positioning through satellite signal triangulation, achieving 2-10 meter accuracy (civilian signals) or 0.1-1 meter accuracy (with differential corrections). In industrial RTLS context, GNSS applications include: outdoor yard tracking (containers, trailers, vehicles in large outdoor areas), perimeter monitoring (tracking assets on facility grounds), wide-area logistics (tracking materials in transport between facilities), and construction site tracking (equipment and materials across large outdoor work sites). GNSS limitations make it unsuitable as primary technology for indoor industrial RTLS: no indoor signal penetration (satellites visible only outdoors with clear sky view), insufficient accuracy for most indoor applications (3-10 meter typical vs. 10-50 cm required indoors), poor performance in urban canyons (between buildings), and relatively slow update rates (typically 1 Hz). Hybrid RTLS approaches combine GNSS for outdoor positioning with indoor technologies (UWB, BLE, Wi-Fi): tags automatically transition between GNSS (outdoors) and indoor positioning (when entering buildings), providing seamless tracking through indoor-outdoor workflows. Industrial GNSS tags typically cost $50-150 (more than indoor-only tags due to GNSS receiver), consume more power (reducing battery life 40-60% when GNSS active), and require larger form factors (GNSS antennas require more space). GNSS valuable for facilities with significant outdoor operations but often unnecessary for purely indoor industrial applications. Industrial RTLS deployments increasingly use GNSS as part of a multi-technology architecture: GNSS covers outdoor zones (yards, loading docks, inter-building transport), BLE covers large indoor areas with meter-level requirements (warehouses, storage), and UWB covers precision zones (production floors, assembly). Unified software platforms aggregate all three data streams, providing seamless tracking as assets move between outdoor and indoor environments.