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How to determine distance using radar system?
Distance is determined by measuring the time it takes for the pulse to make a round trip from the radar to the target and back using the relation distance = (time) * (velocity). The velocity is the speed of light, the speed at which the pulse travels (c).
Is phase shift method is more accurate than pulse measurement method?
Results: The phase shift of the magnetic induction detection signal ranged from 0.6-0.8 degrees. Comparison of detection results for the same subject between the two methods showed that the pulse rate measured by magnetic induction exhibited fewer deviations and better stability than the traditional method.
Which distance measurement technique is used for Categoriacal attribute?
Many fuzzy clustering algorithms have been developed for categorical datasets. However, in most of these methods Hamming distance is used to define the distance between the two categorical feature values.
What is phase shift method in SSB?
The phaseing method of SSB generation uses a phase shift technique that causes one of the side bands to be conceled out. A block diagram of a phasing type SSB generator is shown in fig.
What is Amwave?
Amplitude modulation (AM) is a modulation technique used in electronic communication, most commonly for transmitting messages with a radio wave. In amplitude modulation, the amplitude (signal strength) of the carrier wave is varied in proportion to that of the message signal, such as an audio signal.
How is the phase shift method for distance measured?
As for an optical interferometer, the phase shift method involves an ambiguity regarding the measured distance, because with increasing distance the phase will vary periodically.
How are laser range finders based on phase shift?
Laser range finders are often based on the phase shift method, a technique for measuring distances in the following way. A laser beam with sinusoidally modulated optical power is sent to a target. Some reflected light (from diffuse or specular reflections) is monitored, and the phase of the power modulation is compared with that of the sent light.
How to calculate phase shift of a laser beam?
A laser beam with sinusoidally modulated optical power is sent to a target. Some reflected light (from diffuse or specular reflections) is monitored, and the phase of the power modulation is compared with that of the sent light. The phase shift obtained is 2 π times the time of flight times the modulation frequency.
How does phase shift work in Geospatial Measurement?
It compares the phase angle of the returning signal to that of a replica of the transmitted signal that it keeps inside to determine the phase shift. That phase shift represents the fractional part of the measurement. How does it work?