Geospatial imagery firm DigitalGlobe is buying rival The Radiant Group for $140 million.

The sale of privately held Radiant, which is owned by Aston Capital, will combine two major geospatial imagery companies.

"DigitalGlobe will strengthen its position as the leading commercial source of geospatial information and insight with the capability and scale to address the needs of the world's largest and most sophisticated customers," according to a company announcement. "The combined DigitalGlobe Services business will support critical national security missions with an expanded portfolio of advanced capabilities that extend across the entire geospatial intelligence value chain."

"The acquisition of The Radiant Group represents an important step in deriving new insights for customers from DigitalGlobe's imagery and other geospatial information sources," DigitalGlobe CEO Jeffrey Tarr said. "Combining Radiant with DigitalGlobe greatly enhances both organizations' capabilities, expands our customer base across the U.S. Intelligence Community and increases our access to contract vehicles. Importantly, this acquisition also brings together hundreds of innovative developers and analysts with expertise in geospatial big data and analytics."