Because the amplitude-modulated markers only provide 0.2 s of full-strength carrier, it is more difficult to decode their phase modulation.
22.
The phase modulation generally encodes the same data as the amplitude modulation, but differs for bits 59 through 14, inclusive.
23.
If the sidebands are out of phase with each other, then phase modulation ( PM ) of the carrier suppressed.
24.
It also differs from frequency deviation, which is the inherent and necessary result of modulation in both FM and phase modulation.
25.
Phase modulation is mathematically equivalent to direct Frequency modulation with a 6dB / octave high-pass filter applied to the modulating signal.
26.
This manifests itself in electrical detuning of the antenna resonance circuit and hence a measurable phase modulation of the received signal.
27.
Frequency modulation has a close relationship with phase modulation; phase modulation is often used as an intermediate step to achieve frequency modulation.
28.
In principle, the modulating signal in both frequency and phase modulation may either be analog in nature, or it may be digital.
29.
This requires no additional transmitters or antennas, and phase modulation had already been used successfully by the German later in this article.
30.
Frequency modulation has a close relationship with phase modulation; phase modulation is often used as an intermediate step to achieve frequency modulation.
