Horizon Technologies

Horizon Technologies is a UK-based satellite radio intelligence company headquartered in Woodstock, Oxfordshire, operating a constellation of small satellites carrying HF (High Frequency) radio intelligence payloads to track and monitor maritime vessels by their radio emissions — including AIS alternatives, HF communications, and other RF signatures. The company's AMBER satellite constellation provides broad maritime domain awareness, detecting vessels that suppress their AIS transponders (a technique used by vessels engaged in illegal fishing, sanctions evasion, or drug trafficking) by intercepting their HF radio communications. Horizon Technologies serves maritime security agencies, coast guards, fishery authorities, and intelligence communities requiring persistent, global maritime traffic monitoring beyond AIS.