China is quietly conducting electronic warfare tests in the South China Sea

 China is quietly testing electronic warfare assets recently installed at fortified outposts in the South China Sea, sources tell CNBC. Electronic warfare assets are designed to confuse or disable communications and radar systems. A Pentagon spokesperson declined to comment on intelligence matters. 

Amanda Macias | @amanda_m_macias Published 13 Hours Ago  Updated 12 Hours Ago CNBC.com

 A Chinese Naval officer stands guard beside a submarine at the Ngong Shuen Chau Naval Base in Hong Kong. Reuters A Chinese Naval officer stands guard beside a submarine at the Ngong Shuen Chau Naval Base in Hong Kong. 

China is quietly testing electronic warfare assets recently installed at fortified outposts in the South China Sea, according to sources who have seen U.S. intelligence reports. Intelligence assessments, which were curated less than a month ago, say this is the first known use of the equipment since its deployment earlier this year to outposts in the Spratly Islands, said the sources, who spoke on the condition of anonymity. A Pentagon spokesperson declined to comment on intelligence matters. The move allows Beijing to further project its power in the hotly disputed waters. The placement of electronic warfare assets, which are designed to confuse or disable communications and radar systems, comes on the heels of China's installation of anti-ship cruise missiles and surface-to-air missile systems on three outposts in the hotly contested waters of the South China Sea. The new coastal defense systems, coupled with electronic warfare equipment, represent significant additions to Beijing's military portfolio in one of the most contested regions in the world. The South China Sea, which is home to more than 200 specks of land, serves as a gateway to global sea routes where approximately $3.4 trillion of trade passes annually. The numerous overlapping sovereign claims to islands, reefs and rocks — many of which disappear under high tide — have turned the waters into an armed camp. Beijing holds the lion's share of these features with approximately 27 outposts peppered throughout. Map of the South China Sea. CSIS Asia Maritime Transparency Initiative/CNBC Map of the South China Sea. The Spratlys, to which six countries lay claim, are located approximately two-thirds of the way east from southern Vietnam to the southern Philippines. Just north of the Spratly Islands lie the Paracels, where Beijing boasts 20 outposts including Woody Island, which serves as China's administrative and military headquarters in the South China Sea. Woody Island features an airstrip, helipads, 20 hangars for combat aircraft, J-10 and J-11 fighter jets, HQ-9 surface-to-air missiles, and anti-ship cruise missiles. Meanwhile, China maintains that its island-building on strategic outposts in the South China Sea is for nonmilitary functions. Yet the jamming equipment and missile systems appear to serve no other purpose than for military interests. CSIS Asia Maritime Transparency Initiative/DigitalGlobe CSIS Asia Maritime Transparency Initiative/DigitalGlobe CSIS Asia Maritime Transparency Initiative/DigitalGlobe Amanda Macias National security reporter by TaboolaMORE FROM CNBC