Radar absorbing materials, containing resistive and generally magnetic substances, is used on army vehicles to reduce radar reflection. This is the radio equal of painting something a darkish colour so that it can’t be seen by the eye at night time. Brightness can indicate reflectivity as on this 1960 weather radar picture . The radar’s frequency, pulse type, polarization, signal processing, and antenna determine what it could observe.
Doppler separates litter from aircraft and spacecraft using a frequency spectrum, so particular person signals can be separated from a number of reflectors positioned in the identical quantity using velocity variations...Read More