Howtosignalprocessing
- What is ambiguity function in radar?
- What is the principle of FMCW radar?
- What is the range of FMCW radar?
- What are the applications of FMCW radar?
What is ambiguity function in radar?
The radar ambiguity function is defined as the absolute value of the envelope of the output of a matched filter when the input to the filter is a Doppler-shifted version of the original signal, to which the filter was matched. Ambiguity functions are usually analyzed on a single pulse basis.
What is the principle of FMCW radar?
FMCW works on the principle that the frequency variations of the emitted radar signals permit the distance measurement to the subject over time. The respiration activity of the subject changes the reflected waveform' amplitude resulting in sensing the respiratory illness [34] .
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 are the applications of FMCW radar?
Applications of FMCW Radars
These radars are also used in imaging, and detection, security sensors against intrusion, human vital-sign detection & measurement, and industrial applications for the verification of product dimensions in automated systems.
