On September 3, in order to commemorate the 70th anniversary of the victory of China's anti fascist war of resistance against Japan, to alert the people to remember the history of China's invasion, and to make people cherish the hard won peace today, China will hold an unprecedented grand military parade in Tiananmen Square.

As for the parade, we all know that the more than 50 generals representing the whole army and the armed police force are from the army, the sea, the air, the second artillery and the armed police force, but we know little about the Lei Da Bing, who plays a supporting role in the whole army.

Radar troops are mainly equipped with radar to carry out surveillance, target guidance, weapon control and other tasks for air, sea and ground targets. Radar troops have different systems according to the tasks they perform. For example, air alert radar troops are subordinate to the air force, air defense force, naval air force, and army field forces.

The sea guard radar unit is attached to the Navy. The ground investigation radar troops belong to the army. Radar is just like the eyes of radar soldiers, which enables radar soldiers to accurately grasp the enemy's position and other information, and provides guidance for army operations.

According to the survey, 90% of the thousands of enemy planes shot down by Chinese aviation, air defense and anti-aircraft artillery during the war of resisting US aggression and aiding Korea and the territorial air defense were completed under the guidance of radar. From this, we can know the importance of radar in the army. In addition, as the core of the radar system, the slip ring also deserves our high attention.