Full Breakdown
China Upgrades Djibouti Base, Expanding Signals-Intelligence Reach
By Drooid · · How we work
Upgrade Overview
In mid-2024 China added two new communications compounds to its Djibouti facility, installing high-frequency dipole antennas, very- and ultra-high-frequency arrays, mobile satellite dishes, probable 5G towers and radomes. The Center for Strategic and International Studies (CSIS) assesses that the assets “almost certainly” support a signals-intelligence (SIGINT) mission set, giving the People’s Liberation Army (PLA) a broader view of military activity across the Middle East and Africa. The upgrades were highlighted in a September 17 report that examined commercial satellite imagery of the base.
Background of the Djibouti Outpost
Beijing opened the Djibouti base in 2017, describing it as a support hub for naval escort, peacekeeping and humanitarian missions. Since then it has become the primary staging point for Chinese naval operations in the Gulf of Aden and the Red Sea, providing a foothold for the PLA in a region where the United States relies on the nearby Chabelley Airfield for armed intelligence, surveillance and reconnaissance (ISR) missions. In August, Japan began operating P-1 maritime patrol aircraft from its own Djibouti facility for counter-piracy and regional information-gathering tasks.
Technical Details of the New Facilities
The southeastern site now hosts a main control building, three 30-metre dipole antennas for high-frequency communications, two smaller very- and ultra-high-frequency antennas, three satellite dishes, four likely 5G towers and a radome covering an unidentified asset. A second radome and additional control building sit at the north-western corner, with reinforced cable trenches laid in 2025 suggesting further antenna deployment. CSIS describes the layout as a C4ISR (command, control, communications, computers, intelligence, surveillance and reconnaissance) architecture that enables over-the-horizon communications and secure links to Chinese command centres.
Official Responses
CSIS, while unable to confirm active interception, argues that even encrypted traffic can reveal direction, origin, frequency and cadence, offering insight into U.S. and allied operations.
Strategic Implications
This development may narrow the intelligence gap that the United States and its partners have traditionally enjoyed in East Africa, prompting closer scrutiny of Chinese military capabilities in a region already contested by multiple external powers.