Doppler radar works by sending a beam of electromagnetic radiation waves from the transmitter (TX Antenna), with a precise frequency, at a moving object . Once the electromagnetic radiation wave comes in contact with an object, it travels back towards the receiver (RX Antenna).12 Haz 2020
Read moreHow many antenna are used in CW Doppler radar?
The receiver uses two antennas – one antenna aimed at the target and one antenna aimed at the transmit antenna.
Read moreWhat is antenna in radar system?
The radar antenna transmits pulses of radio waves which bounce off any object in their path . The object returns a small part of the wave’s energy to the receiver antenna which is usually located at the same site as the transmitter. The basic use of the traffic radars is the measurement of the speed of the vehicle.
Read moreWhich antenna is mostly used in radar system?
Among the different types of reflector Antennas, the simple parabolic reflectors and the Cassegrain feed parabolic reflectors are the most commonly used ones.
Read moreWhat is pulse radar and continuous wave radar?
Pulse Radar is use for detecting of target location . and CW Radar stands for continuous wave radar. Here is difference between Pulsed RADAR and CW RADAR. Pulsed RADAR : In this system the pulse modulated signal are used for transmission.28 Oca 2011
Read moreWhat is the principle of FM radar?
The radar principle used is FMCW (Frequency Modulated Continuous Wave) . The FMCW-radar transmits a high frequency signal whose frequency increases linearly during the measurement phase (called the frequency sweep). The signal is emitted, reflected from the measuring surface and received with a time delay, t.
Read moreWhy CW radar can measure range?
CW radar can measure the instantaneous rate-of-change in the target’s range. This is accomplished by a direct measurement of the Doppler shift of the returned signal . The Doppler shift is a change in the frequency of the electromagnetic wave caused by motion of the transmitter, target or both.
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