It was a torrid summer day, a military exercise in complicated electromagnetic environment was about to kick off, and suddenly communication of the command post was completely cut off. Two technicians swiftly reported: "It has been caused by 'enemy' interference source, grid ××, we suggest to destroy it by firepower!" In an instant, the "enemy" interference source was destroyed. This is a scene of a confrontational exercise in which the Electromagnetic Spectrum Management Center of the Shenyang Military Area Command gave full play to its role of electromagnetic spectrum control.

　　With the daily increase of quantity and variety of electronic information equipment, the future battlefield will be filled with crisscross and changing electromagnetic signals. In case these electromagnetic spectrums are not properly controlled, they may not only interfere with each other, but also make the targets liable to be exposed. Therefore, it is of great urgency to properly control the electromagnetic space.

　　It took the center two years to collect and sort out tens of millions of data from military and civilian frequency-using stations and set up an electromagnetic spectrums control database. On this basis, it has established an army-civilian joint management, joint development and joint use mechanism, and through which it has enabled electromagnetic spectrum management to function in a regularized and standardized way.

　　In early spring last year, the military area command organized a fighting capability appraisal exercise. In order to raise the troops' capability of handling emergencies in complicated electromagnetic environment, the Electromagnetic Spectrum Management Center issued a spectrum control order at 4:00a.m. and readjusted the frequency used by a certain unit without prior notice. The commander of the troops was caught unprepared. Soon after the troops readjusted the frequencies, the Electromagnetic Spectrum Management Center suggested to the higher level to interference with troops' frequencies. As a result, the communication and command of the troops was interrupted. Through the exercise, the troops were truly tempered in complicated electromagnetic environment.

　　Today the professional department of the higher level has explicitly stipulated that the electromagnetic spectrum management center must take part in the full process of any large-scale military activities to provide directing groups with electromagnetic situations, and timely suggest directing groups to set hazardous electromagnetic situations for the exercise troops to cope with.

　　By Li Xiukun, Li Kuiwu and Song Yuangang

　　(Aug 13, PLA Daily)                                            Editor: Dong Zhaohui