SETI scientists suggest that extraterrestrial civilizations could detect Earth through 'technosignatures' like planetary ...

This reflected signal is then received by the radar during its listening period. Computers analyze the strength of the returned radar waves, time it took to travel to the object and back ...

Radar worked by sending out a radio wave and analyzing the reflected wave after it bounced off any objects in the air. The rectifier's job was to translate the reflected signal into the direct ...

ALIENS could discover humans on Earth by spotting one of 12 signs, scientists say. Topping the list is a clue that could be seen by extraterrestrials from a mammoth 12,000 lightyears away. The ...

Researchers have developed a new radar signal–processing technology that can dramatically enhance the resolution of existing low-resolution radars. This technology enables precise object ...

Researchers say the effect on detector screens would be similar to an object the size of a sports stadium materialising out ...

this system is a passive radar system that uses radio waves already present in the environment to track objects. A reference antenna is used to listen to the target frequency, and in this ...

Conceptually, radar is pretty simple ... but limits how close you can see and also the system’s ability to resolve objects that are close to each other. Pulse compression uses a long ...

Whether microwaves reflect or penetrate an object ... So NISAR's two radar signals will react differently to some features on Earth's surface. By taking advantage of what each signal is or isn ...

has developed a new radar signal–processing technology that can dramatically enhance the resolution of existing low-resolution radars. This technology enables precise object recognition using ...