differential phase การใช้

• The biassed ferrite is part of the circulator and causes a differential phase-shift for signals travelling in different directions.
• When differential encoding is used in this manner, the scheme is known as differential phase-shift keying ( DPSK ).
• Since this scheme depends on the difference between successive phases, it is termed differential phase-shift keying ( DPSK ).
• Differential phase shift keying ( DPSK ) is a common form of phase modulation that conveys data by changing the phase of the carrier wave.
• As delivered, the physical layer is OFDM, sampled at 250 kHz, with 512 differential phase shift keying channels from 42 89 kHz.
• Since this scheme depends on the difference between successive phases, it is termed "'differential phase-shift keying ( DPSK ) " '.
• To solve the problem of differential phase distortion in PAL system, the polarity of both the colorburst and the color signal are reversed in each consecutive frame.
• Finally, the IEEE 802.15.4a PHY standard actually mixes CSS encoding techniques with differential phase shift keying modulation ( DPSK ) to achieve better data rates.
• By recording several images at different detuning angles, meaning at different positions on the rocking curve, a data set is gained which allows the retrieval of quantitative differential phase information.
• So the phase differences between two consecutive lines ( so-called differential phase ) are converted to differential gain distortions . ( Hue is preserved at the risk of decreased saturation ).
• His work led him and co-workers like and Dr . Kruse to devise a new color television system that automatically corrected for the differential phase distortion that can occur along the transmission channel.
• This problem has been solved either by recording differential phase contrast images of the sample in both direction x and y by turning the sample ( or the gratings ) by 90?or by the employment of two-dimensional gratings.
• In media termed birefringent, in which the amplitudes are unchanged but a differential phase delay occurs, the Jones matrix is a unitary matrix : | " g " 1 | = | " g " 2 | = 1.
• One way of using the animation might be through a link : " For an animated demonstration explaining the origin of the differential phase shift between light traveling the longitudinal " versus " the transverse arms of the Michelson Morley apparatus, click talk ) 04 : 54, 5 July 2012 ( UTC)
• In this application, an incoming differential phase-shift keying ( DPSK ) optical signal is first split into two equal-intensity beams in two arms of a Mach Zehnder or Michelson interferometer, in which one beam is delayed by an optical path difference corresponding to " 1-bit " time delay.
• CSRZ-OOK, in which data is coded on the intensity of the signal using a binary scheme ( light on = 1, light off = 0 ), or CSRZ-DPSK, in which data is coded on the differential phase of the signal, etc . CSRZ is often used to designate APRZ-OOK.
• As a differential phase starts to accrue, the polarization becomes elliptical, eventually changing to purely circular polarization ( 90?phase difference ), then to elliptical and eventually linear polarization ( 180?phase ) perpendicular to the original polarization, then through circular again ( 270?phase ), then elliptical with the original azimuth angle, and finally back to the original linearly polarized state ( 360?phase ) where the cycle begins anew.