Can people live within 5 kilometers of Kedu Town, Pingtang County?

It doesn’t matter. Radio telescopes do not emit electromagnetic waves, but only passively receive signals.

Radio telescopes only passively receive radio waves emitted by celestial bodies. Therefore, it is not an active detection instrument.

Radio telescope refers to the basic equipment for observing and studying radio waves from celestial bodies. It can measure the intensity, spectrum and polarization of celestial radio. It consists of a directional antenna that collects radio waves, a high-sensitivity receiver that amplifies radio signals, and an information recording, processing and display system.

The principle of the radio telescope is: after the incoming electromagnetic waves are reflected by a precise mirror, they arrive in phase with the common focus. The radio frequency signal is amplified 10 to 1,000 times at the focal point and converted to a lower frequency (intermediate frequency). It is then transmitted by cable to the control room, where it is further amplified, detected, and finally processed in a manner suitable for the specific study. Record, process and display.