Howtosignalprocessing
- How does an FMCW radar work?
- What is the range of FMCW radar?
- What's the difference between FMCW and CW radars?
- How FMCW radar overcomes the shortcomings of Doppler CW radar?
How does an FMCW radar work?
How Does FMCW Radar System Work? In an FMCW system, the transmitter antenna emits frequency modulated continuous radio waves, and the reflected signal from the target is received by the receiving antenna. The output of the receiving antenna is given to the mixer stage of the receiver via a pre-amplifier.
What is the range of FMCW radar?
Frequency Modulation is used in FMCW radar. FMCW radars use mm wave electromagnetic spectrum which has very short wavelengths upto 4 mm [9], [10]. The frequency used is in range of 76–81 GHz. Higher frequencies are used so that even smaller objects can be detected effectively.
What's the difference between FMCW and CW radars?
The CW radar can measure the Doppler frequency of the target, but it cannot measure the target range. The frequency-modulated CW radar (FM–CW) can measure both the range and Doppler frequency of the target.
How FMCW radar overcomes the shortcomings of Doppler CW radar?
CW radar or doppler radar does not measure range or distance of the target. This limitation of CW radar is overcome by FMCW radar. FMCW radar detects, measures range and radial velocity of the object.
