A federal judge in Key West gave Zhao Qianli the maximum sentence following his guilty plea on Tuesday of a number of defense installation photographs.
Zhao & # 39; s lawyer, Hongwei Shang, declined comment on CNN when he reached telephone on Wednesday night.
By clearing the base line of the base, Zhao went directly to an area containing a number of satellite dishes and antennas called "Farm", legal documents say.
Zhao took videos and several photographs of equipment in the yard, the court said.
"The primary installation fence line contained several signs that said the courtyard area was a" restricted area "and" hold out "which made a secondary fence line around the farm,
A US Navy video calling Key West The plant "one of the leading intelligence centers in the world."
It tracks more than 1
The center monitors more than 42 million square kilometers of the Earth's surface to Detecting Threats to US Security, Including US Consignments According to the Video
Staff of All Five Departments of the US Military plus Representatives of 13 Other Nations Working on the Plant.
USA claims Chinese influence campaign
Words of Zhao sentence come as US officials claim China is involved in a persistent, aggressive action against US companies and public authorities.
Both countries are holding trade talks aimed at alleviating long-standing US concerns over Beijing's commercial practices. But in the last six months, tensions between the two countries have spread to military, political and diplomatic arenas.