an artificial satellite can be tracked very precisely from the earth by using

credit: Nasa

an artificial satellite square measure usually half-track really specifically from the globe by victimization dopler impact

The correct answer is Doppler shift.

An artificial satellite square measure usually half-track really specifically from the globe by victimization Dopper impact.

The Doppler shift, or propagation, describes the changes in frequency of associatey fairly sound or light-weight wave created by a moving offer with connexion associate observer.

Waves emitted by associate object travel toward associate observer get compressed — prompting an improved frequency — as a result of the availability approaches the observer.

The reason for the Doppler shift is that after the availability of the waves is moving towards the observer, each consecutive wave crest is emitted from a footing nearer to the  observer than the  crest of the previous wave.

The distance between consecutive wavefronts is then accrued , thus the waves "spread out".

The Doppler shift has several real-world applications. for example, besides police instrument, the Doppler shift is utilized by meteorologists to trace storms.

Doctors even used the Doppler shift to diagnose heart problems.