BEIJING, Sept. 9 (Xinhua) -- China's newly launched environment monitoring satellites have started operation and are sending back concrete data, Chinese authorities have announced. 

　　The two satellites successfully sent back data obtained by the charge coupled devices (CCD developed by SITP) cameras at 5 p.m. on Monday and the images converted from the data were clear, the State Administration of Science, Technology and Industry for National Defense said in a brief release.