AirNav Systems is a Tampa-based global flight tracking and data services company founded in 2001. The company operates a flight tracking website and mobile app called Radarbox which offers worldwide tracking of commercial and general aviation flights. AirNav Systems also owns and operates a ground-based ADS-B tracking network that is supported by over 20,000 active volunteer ADS-B data feeders from over 180 countries. The company's real-time tracking and data services are also used by 25,000 aviation related businesses, government agencies, airlines, media channels and airports in over 60 countries. The company's R&D Center and European office is located in Lisbon, Portugal. History In 1996, while studying computer science at university, CEO, Andre Brandao developed a flight tracking application called AirNav Suite. In 2001 he established AirNav Systems. In early 2020, AirNav Systems announced a partnership with venture capital firm BrightCap Ventures. The same year, the company was chosen by ARGUS International, Inc to provide global flight and ground aircraft tracking services. In October 2020, Satellite-based ADS-B data was made available to all Radarbox users for free. AirNav Systems currently partners with multiple satellite providers including Spire Aviation to provide satellite-based tracking on its platform. Tracking sources AirNav Systems is the parent company of Radarbox which displays flight data in real-time from all over the world. Radarbox aggregates data from 10 different sources: ADS-B (Ground-based): The source of this data are terrestrial ADS-B receivers, which receive and collect data from the transponders of aircraft flying within the ADS-B receivers’ range. The data gathered by these terrestrial ADS-B receivers include, aircraft speed, position, registration information and other data. These ADS-B receivers usually operate at 1090 MHz. Radarbox also receives flight data from UAT 978 MHz as well. ADS-B (Satellite-based): Aircraft transponder data is collected by Satellites equipped with ADS-B receivers. This data is then sent to AirNav Radarbox's servers for processing FAA SWIM: The Federal Aviation Administration System Wide Information Management data comes directly from the FAA's domestic radar systems and contains data on virtually all aircraft flying in US airspace. This data source includes real-time position data, flight plans, departures, arrivals, routes, waypoints. EUROCONTROL: In addition to flight position, registration and other data, EUROCONTROL data allows for access to flight plans and other operational information of aircraft and airports operating in the EURCONTROL region. MLAT: Multilateration or MLAT is a surveillance technique based on the measurement of the difference in distance