ЧТО ОЗНАЧАЕТ СЛОВО PHASE MODULATION
Фазовая модуляция
Фазовая модуляция представляет собой шаблон модуляции, который кодирует информацию как изменения в мгновенной фазе несущей волны. В отличие от частотной модуляции фазовая модуляция широко не используется для передачи радиоволн. Это связано с тем, что PM требует более сложного приемного оборудования, и могут возникнуть проблемы с двусмысленностью при определении того, изменился ли, например, фаза фазы на + 180 ° или -180 °. PM используется для генерации сигналов и сигналов в цифровых синтезаторах, таких как синтезаторы Casio CZ, и для внедрения синтеза FM в таких цифровых синтезаторах, как Yamaha DX7.
Значение слова phase modulation в словаре английский языка
Определение фазовой модуляции в словаре - это тип модуляции, используемый в системах связи, в которых фаза волны несущей радиоизлучения изменяется на величину, пропорциональную мгновенной амплитуде модулирующего сигнала.
КНИГИ НА АНГЛИЙСКИЙ ЯЗЫКЕ, ИМЕЮЩЕЕ ОТНОШЕНИЕ К СЛОВУ «PHASE MODULATION»
Поиск случаев использования слова
phase modulation в следующих библиографических источниках. Книги, относящиеся к слову
phase modulation, и краткие выдержки из этих книг для получения представления о контексте использования этого слова в литературе на английский языке.
1
Digital
Phase Modulation
The last ten years have seen a great flowering of the theory of digital data modulation. This book is a treatise on digital modulation theory, with an emphasis on these more recent innovations.
John B. Anderson, Tor Aulin, Carl-Erik Sundberg,
1986
2
High-Order
Modulation for Optical Fiber Transmission
In the first part of the book, the author discusses various transmitter implementation options as well as several receiver concepts based on direct and coherent detection, including designs of new structures.
3
The Electronics Handbook
This is known as phase modulation (PM). When a carrier is phase modulated, the
input signal is designed to alter the phase of the carrier. When the amplitude of
the modulating signal swings positive, the greater is the phase shift of the carrier
...
4
Phase Noise in Signal Sources: Theory and Applications
level than spurious phase modulation. Frequency multiplication which is
necessary in the majority of stable high frequency signal sources, results in a
degradation of the unwanted angle modulation but not inherently in the
unwanted AM, ...
5
French Dictionary of Information Technology: French/English, ...
... wave (MCW) keying; ~ arythmique start-stop modulation; restitution; ~ combiné
d'amplitude et de phase combined amplitude and phase modulation; ~ d'
amplitude on-otï signalling; amplitude modulation (AM) amplitude (shift) keying (
ASK); ...
6
High Speed LAN Technology Handbook
Analog modulations are of three kinds: • amplitude modulation • frequency
modulation • phase modulation. 5.1.1 Amplitude Modulation This analog
modulation technique is also called AM. In AM the information is added to the
carrier ...
Dhiman D. Chowdhury,
2000
7
Communication Systems and Techniques
Phase Modulation Phase modulation (PM) is the special kind of angle
modulation in which 0(0 = pt + 0o + M0 (5-1-1) where 8(t) is the modulating signal
. That is, in phase modulation the phase varies linearly with the signal. If the
signal is ...
Mischa Schwartz, William R. Bennett, Seymour Stein,
1995
8
Radio-frequency Electronics: Circuits and Applications
In FM and phase modulation (PM) the audio voltage controls the phase angle of
the sinusoid; the amplitude remains constant. Since frequency is the derivative of
phase with respect to time, the two quantities cannot be varied independently; ...
9
Bandwidth-Efficient Digital
Modulation with Application to ...
Continuing with our discussion of strictly constant envelope modulations, we now
turn our attention to the class of schemes referred to as continuous phase
frequency modulation (CPFM) or more simply continuous phase modulation (
CPM).
10
Phase-Modulated Optical Communication Systems
Mitra and Stark (2001) argued that the capacity of WDM systems is fundamentally
limited mostly by cross-phase modulation. As a signal propagates, chromatic
dispersion converts cross-phase-modulation- induced phase modulation to ...
НОВОСТИ, В КОТОРЫХ ВСТРЕЧАЕТСЯ ТЕРМИН «PHASE MODULATION»
Здесь показано, как национальная и международная пресса использует термин
phase modulation в контексте приведенных ниже новостных статей.
Smart, low-cost daylight harvesting enabled by multi-sensor controller
It also includes a line voltage AC phase modulation circuit which provides direct dimming control for both for 12V low-voltage light and ... «EDN.com, Июл 15»
Seeing through chaos in multimode fibres
As pixels are organized across an orthogonal grid, each of these measurements carries a specific linear phase modulation (equivalent of a prism), which can be ... «Nature.com, Июл 15»
Measuring the phase shifts produced by transmissive spatial light …
H. Yue, L. Song, Z. Hu, H. Liu, Y. Liu, Y. Liu, Z. Peng, Characterization of the phase modulation property of a free-space electro-optic modulator ... «SPIE Newsroom, Июн 15»
Optical Design Software
... intermodal and intramodal cross-phase modulation caused by the Kerr nonlinearity. A new macro applies typical parameter values of OM1, ... «Photonics.com, Июн 15»
Ultrafast Lasers Create 3-D Crystal Waveguides in Glass
Dynamic phase modulation allows growth of symmetric crystal junctions with single-pass writing, the researchers said. "We have made the ... «Photonics.com, Июн 15»
Complete temporal characterization of a single photon
... with virtual phase modulation (b), and with phase-randomized EOM modulation (c). For each case, the first and second panels show the real ... «Nature.com, Июн 15»
Multicolor meta-hologram produces light across entire visible spectrum
In general, holograms use either amplitude modulation or phase modulation of light waves to achieve the holographic effect. In the new study, ... «Phys.Org, Май 15»
Evaluating NASA's Futuristic EM Drive
The magnetron generates amplitude, frequency and phase modulation of the carrier wave (FM modulation bandwidth on the order of +/-20 MHz ... «NASASpaceflight.com, Апр 15»
KKOH History
By combining balanced audio amplitude and balanced phase modulation the phase shifts reduce modulation to 0% at 180 degrees shift and increase ... «KKOH, Апр 15»
MESSE 2015: Make Noise Telharmonic Updates
The new features include a noise output, a phase modulation voice, a harmonic lock feature and a tempo input. This is one particularly exciting ... «Sonic State, Апр 15»