frequency modulated In A Sentence
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- While landing or flying around in groups around the roost-site, lesser mouse-tailed bats emit frequency modulated ( FM ) sounds of 3 ms duration.
- They hunt their prey using scent, passive hearing, and frequency modulated calls.
- In these systems a " carrier " radar signal is frequency modulated in a predictable way, typically varying up and down with a sine wave or sawtooth pattern at audio frequencies.
- The EI-EPR spectra can be collected in two ways : ( 1 ) difference spectra ( 2 ) frequency modulated rf field without Zeeman modulation.
- In 1942, a pioneering VHF frequency-modulated radio-link was established between Creg-na-Baa and the UK to provide an alternative to the sub-sea cable.
- It has two inputs and one output : a reference signal is applied to one input and the phase or frequency modulated signal is applied to the other.
- Besides the AM broadcasts, All India Radio has an FM, or frequency modulated, channel called Rainbow FM, broadcasting at 105.4 MHz.
- Perceptual asymmetries were identified, with frequency modulated targets easier to detect among pure tone distractors than vice-versa.
- In linear frequency modulated continuous wave (LFM-CW) radar the range resolution is determined by signal bandwidth and linearity.
- This thesis makes fitting for B - spline wavelets by Gaussian function frequency modulated , time shifted and amplified.
- The combination of frequency modulated continuous wave(FMCW)technology and synthetic aperture radar(SAR)techniques is often used to obtain ultra-high resolution.
- Below these were the two moving head tracks called C and Y, which are frequency modulated parts of the video signal.
- CD-R and CD-RW discs, use a frequency modulated wobble of 140.6 kHz to encode some information, such as Absolute Time in Pregroove ( ATIP ) into the groove.
- The radar range recursion filter formula, which is widely used in present radars, for linear frequency modulated pulse compression signal, has not been formed yet.
- The output from the mixer is a frequency modulated signal.
- Compared with traditional bearing fault diagnosis method, the approach proposed in this paper can detect the low frequency modulated components from high frequency band.
- Frequency-modulated radio waves can be generated at any frequency.
- For the video, luminance was simply frequency modulated and written to the Y track.
- The output of the photodetector is a standard frequency modulated ( FM ) signal, with the Bragg cell frequency as the carrier frequency, and the Doppler shift as the modulation frequency.
- Short pulses with rise time less than 0.5 millimicrosecond and pulse-modulated high frequency waves up to 1000 Me are observed with this sampling oscilloscope.
- Three features parameters derived from the instantaneous amplitude, instantaneous phase, instantaneous frequency and power spectrum of analogue modulated signals are presented in this article.
- It was modulated with 2-ms pulses at a pulse repetition frequency ( PRF ) of 2000 Hz.
- At the headend, the radio frequency electrical signal carrying all the channels is modulated on a light beam and sent through the fiber.
- In order to shape the frequency spectra, the PRN codes are modulated onto a rectangular subcarrier.
- This paper reports that the frequency responses of a direct-modulated DFB laser diode can be improved using an injection locking method.
- At present, proximity high frequency RFID (Radio frequency Identification) system based on inductive coupling load modulated technology is used worldwide.
- FDM assigns a discrete carrier frequency to each data stream and then combines many modulated carrier frequencies for transmission.
- Theoretical deduction proves that under the condition of all digital receiver, the ideal FM demodulated signal is equivalent to a signal with amplitude modulated by the frequency deviation.
- The three key parameters of a sinusoid are its amplitude, its phase and its frequency, all of which can be modified in accordance with an information signal to obtain the modulated signal.
- The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.
- Because all of the satellite signals are modulated onto the same L1 carrier frequency, the signals must be separated after demodulation.
- The treatment group applied Tuina massage combined with LIPUS on tibialis anterior muscle and tibia. Those in the control group received physiotherapy of modulated medium frequency.
- Gas filled devices are more sensitive but the frequency response to modulated illumination falls off at lower frequencies compared to the vacuum devices.
- The time delay response of the system has been measured with an optical signal modulated with Double Side Band technique at a frequency of 2GHz.
- If the frequency of a laser is modulated sinusoidally, the first harmonic component of saturated absorption signal can be used as error signal to stabilize the frequency of the laser.
- It is found that the TCO can modulate REB, that the modulated beam can be converted to HPM, and that the frequency of microwave accords with theoretical ones.
- The primary audio signal is modulated by frequency modulation with a preemphasis "'time constant "'of ? = 50 ?s.
- Spectrum of the amplitude-modulated wave is observed by a radio frequency spectrum analyzer and amplitude values of every spectrum are recorded at the upper sideband or lower sideband.
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