Some Most important Forms of Flight Time Trackers
There are various types of flight time trackers like:
1. Radar based flight tracking which is the conventional type and technique accustomed to track aircraft. This tracker is used worldwide. It is usually known as ground based tracking and also radio frequency tracking. This system basically uses the leading of radar utilizing the characteristics of radio waves for tracking and communication purposes. Air Traffic Control towers which are developed to emit radio waves at the specific rf can be referred to as ground based stations. The emitted radio waves will travel and bounce off of the aircraft which in turn travels time for the base. The period between the transmitted and received waves is employed to ascertain the distance between the plane and ATC tower. 
2. Flight tracking by utilizing Google Earth is one of the many applications that will serve as a real time flight tracker. This application utilizes 3D visuals which are generated few other than Google Earth itself, in addition to algorithms to be able to present you a visual of the present flight location, its path along with flight data such as destination, estimated time of arrival and departure time, speed and etc.
3. Satellite based flight tracking too involves the measuring of data (some time to position). Why is this tracker unique is the fact that every activity performed to trace the aircraft is carried out by satellites. Satellite tracking has the capacity to eliminate several disadvantages faced by ground based trackers.
4. Web flight tracking emerges by websites on the internet. What you must do is to key in your flight information on the specific gui in that particular website. Your website will display a virtual path in addition to relevant or important information that one usually would like to take note of.
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