Global markets for signals intelligence (SIGINT) markets will reach $23.42 billion by 2029, up from $15.75 billion in 2021, with the major growth expected to occur from 2023 to 2027 when the majority of deployments of SIGINT will take place in ground-based SIGINT, space and unmanned aerial systems, and maritime SIGINT, according to a stufy from Market Forecast, "Signals Intelligence (SIGINT) -- Market and Technology Forecast to 2029."