Interpretation of reconnaissance satellite

An artificial earth satellite used to collect intelligence. Generally equipped with television, radar, infrared or other modern detection and photography equipment, can find out the target on the surface of the earth.

Word decomposition

Understand each other, try to find out what scientific research projects they are engaged in, and explain in detail the reconnaissance and exploration activities carried out in order to find out the enemy's situation. Biography of Wu Huan in the History of the Later Han Dynasty: "It also shows that Huo Qubing, a general in title of generals in ancient times, was sent by Emperor Wu of the Han Dynasty to break the left land of Xiongnu, because Wu Huan was turned into a satellite: celestial bodies revolve around planets, such as the moon revolves around the earth. Also referred to as artificial satellite: a satellite city around the center like a satellite. Han Dong's book "The Story of the Spring and Autumn Period: Fengben": "There are 300 satellites and 3,000 satellites. "Astronomical terms. Orbiting a planet.