The techniques used to track aircraft is?

Hint: Radar is used to track the aircraft, using the radio waves. Radar is a detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

Complete step by step answer:
The word RADAR is an acronym for Radio Detection and Ranging and is its simplest form it consists of a transmitted radio signal assigned by the echelon off any objects in the path of the signal.
The transmitter consists of an electronic circuit that oscillates at a specific frequency, usually much higher than those frequencies used for radio or TV broadcasts.
This signal is just out in short bursts of electromagnetic energy emitted through pulses, through the antenna which produces a narrow team like that of a torch.
Radar makes it possible to determine the direction of an object generally referred to as the direction of an object generally referred to as the target, based on the direction the antenna is facing.
The distance to the target is determined from the time taken between isemmitting the pulse and receiving the echo. This can be accurately determined because the radar signal travels at the speed of light, which is constant.

Note: This is a pure informative question, sequires knowledge in aerospace and mechatronic, mechanical engineering. Radar can measure precipitation size, quantity, speed and direction of movement, within about 100 mile radius of its location. How Does Doppler Radar Work? Doppler radar is a specific type of radar that uses the Doppler effect to gather velocity data from the particles that are being measured.