Iridium Makes Strategic Investment in DDK Positioning, Provider of Enhanced GNSS Accuracy Solutions DDK Positioning Solutions Utilize the Iridium® Satellite Constellation to Deliver Five Centimeter GNSS Accuracy to Industrial IoT Users News provided by Share this article Share this article MCLEAN, Va., May 24, 2021 /PRNewswire/ -- Iridium Communications Inc. (NASDAQ: IRDM) today announced that it has made a strategic investment in DDK Positioning (DDK), an Aberdeen, Scotland based provider of enhanced Global Navigation Satellite System (GNSS) accuracy solutions. DDK uses the Iridium ® network to provide global precision positioning services that can augment GNSS constellations, including GPS and Galileo, to significantly enhance their accuracy for critical industrial applications. DDK is also developing similar services for other GNSS constellations, such as GLONASS and Beidou. Terms of the investment are not being disclosed.