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Q: Why Phase and frequency synchronization is needed in coherent detection?
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Is discrete signal continuous?

To answer this properly more context is needed but frequency is in most contexts continuous.


What the difference between power frequency inductance and high frequency inductance?

As the frequency becomes higher then its wavelength would decrease. In case of mechanical waves such as sound waves higher frequency means higher the pitch. In Sanskrit it is known as 'shruthi'. Singers would sing at different shruthi. In case of electromagnetic wave such as light, as frequency increases the colour changes. So highest frequency in the visible region will be the violet and the lowest is the red. Also the energy of the wave photon is given by the expression E = h nu, where nu is the frequency of the wave. So higher the frequency higher the content of energy in the photon compared to the lower frequency radiation.


What are oscillator crystals made out of?

Any where a stable desired frequency is needed. Crystal Oscillators are quite accurate, they are used in computers as well as wrist watches.They use a mechanical oscillatory force that is induced by an electric charge on a piezoelectric substance at resonance.en.wikipedia.org/wiki/Piezoelectricity~MECHASUN~


What engine size is needed fo 20kw generator?

Have a look at AuroraGenerators.com If it is diesel your looking at about 1 gallon per hour however likely you are not running at full load. You can expect to be using on average 0.5 gallons per hour on an Aurora Diesel Generator


What would be the minimum sampling interval needed for reconstructing a signal where the highest frequency is 1 kHz?

The Nyquist frequency for a signal with a maximum bandwidth of 1 KHz is 500 Hz, however that will lead to aliasing unless perfect filters are available. The Nyquist rate for a signal with a maximum bandwidth of 1 KHz is 2 KHz, so the answer to the question is 2 KHz, or 500 microseconds.

Related questions

What is the beacon frequency of INST AA?

Each cell area broadcast the information about the that cell in bearer frequency for the following purposes To allow a synchronization in time and frequency of the MSs to the BTS. This synchronization is needed by the MS to access the services of a cell. The frequency and time synchronization procedures that are performed by the mobile To help the mobile in estimating the quality of the link during a communication, by measurements on the received signal from the BTS it is transmitting to, and from the other BTSs of the geographical area. These measurements are used by the network to determine when a handover is necessary, and to which BTS this handover should apply. To help the mobile in the selection of a cell when it is in idle mode (that is, not in communication, but still synchronized to the system and able to receive an incoming call or to initiate a call). This selection is performed on the basis of the received power measurements made on the adjacent cells' beacon channels. To access the general parameters of the cell needed for the procedures applied by the MS, or general information concerning the cell, such as its identification, the beacon frequencies of the surrounding cells, or the option supported by the cell (services).


What are the release dates for The Daily Orbit - 2012 Asteroid Detection Plan Needed 1-142?

The Daily Orbit - 2012 Asteroid Detection Plan Needed 1-142 was released on: USA: 21 March 2013


Which of these is needed to be able to calculate the frequency?

period


How do you test for 60 hertz?

A frequency meter is needed to test for frequency. Some of the upscale process meters have the ability to test for frequency.


What are the components needed for a good sentence?

It has to have one but not more than two main ideas, coherent thought and well punctuated.


Synchronization in java?

Threads communicate primarily by sharing access to fields and the objects reference fields refer to. This form of communication is extremely efficient, but makes two kinds of errors possible: thread interference and memory consistency errors. The tool needed to prevent these errors is synchronization.


For satellite communication the frequency should be less than critical frequency?

For satllite communication the frequency should not be less than the critical frequency because in satellite communicaton high frequency is needed which is reflected by satellite but not by the ionosphere.


Disadvantages of SSBSC transmission compared with full-carrier AM?

A BFO in the receiver is needed to reinsert the carrier before detection.


What is the need of the buses?

the purpose of buses is to reduce the number of pathways needed for communicate between the components , by carrying out all communication over a single data channel. synchronization- synchronization between components can set with help of buses. buses are used for high speed transfer between CPU, memory and other devices .


What two factors are needed to locate something?

Two facts you would need in order to locate something would be, general location of the object that needs to be located and a mode of detection, whether it be some sort of scan, xray, sonar, or other detection device.


Is discrete signal continuous?

To answer this properly more context is needed but frequency is in most contexts continuous.


How is the velocity of a periodic wave related to its frequency and wavelength?

The period is defined as: the time needed to complete one cycle.Frequency is the number of cycles per second .that's where the relation came from ...the mathematics representation of the relation is : frequency = 1/period orperiod = 1/frequency .hope u got it.