"How are they flying above the Depth Ship?!" someone exclaimed within the Garrison Forces command center.
This time, everyone was in a panic. They had been hunting Qing Chen for seven days, and not only did they fail to capture him, but now he was right above their own commander's head!
"Wait a minute, the Depth Ship is equipped with phased array radar, these two are so close, why haven't they been detected?" an officer asked in confusion.
If the Depth Ship had detected the boy and girl, it should have released the drone swarm long ago, and the four escorting fighter jets should have already launched an attack!
But now, none of that had happened.
Explained in simple terms.
The principle of radar is to emit electromagnetic waves, illuminate the target, and then receive its echoes.
The commonly used "stealth coating" absorbs electromagnetic waves so that no echo returns, achieving the goal of disappearing from the radar, but not becoming truly invisible.