Here, a new double sideband frequency scanning interferometry (DSB-FSI) system is proposed, which enables long-range, high-precision measurements. Furthermore, a new fringe counting method based on all-phase FFT (apFFT) is used, which can accurately estimate the number of fringes under the ...
Many different modulation schemes can implement high bit rates. For example, frequency-shift keying (FSK) typically uses two different frequencies in each symbol interval to represent binary 0 and 1. Therefore, the bit rate is equal to the baud rate. However, if each symbol re...
in atomic clocks the frequency of a particular atomic transition is used as an oscillator. as atoms of the same type are fundamentally identical, in this way, the time intervals can be measured free from mechanical artifacts in a universal manner. in modern optical atomic clocks the laser light...
Unsymmetrical-sideband problems are met in frequency modulation and single-sideband transmission. There has developed the urgent need of a simplified procedure for their solution. The "vector envelope" of a modulated signal is reviewed, with special attention to the simple cases of amplitude, phase,...
This clock operates at a frequency set by PCLK Rate. The rising edge of the clock is the reference for all signals. Spread spectrum modulation on this clock is allowed. Parallel interface data clock. This fixed rate clock operates at the following rate: PCI Express ...
When the TCC is activated, the processor automatically transitions to the new lower operating frequency. This transition occurs very rapidly (on the order of microseconds). Once the new operating frequency is engaged, the processor will transition to the new core operating voltage by issuing a new...
While most of the radios and equipment are purchased directly for the review, occasionally, manufactures give us review samples or loaners. This typically happens when the product cost is excessive, a new product has been launched (and we’re receiving a pre or first production unit) and/or ...
Recently, some significant progress toward the development of a nuclear frequency standard has been made and by today there is no doubt that a nuclear clock will become reality, most likely not even in the too far future. Here we present a comprehensive review of the current status of nuclear...
Ronald M. Lees2 & Li-Hong Xu2 Lamb-dip spectroscopy of the C−N stretching band of methylamine has been systematically extended to P-, Q-, and R-branch by using microwave sidebands of a large number of CO2 laser lines as frequency-tunable infrared sources in a sub-Doppler spect...
A coherent optical (CO) orthogonal frequency division multiplexing (OFDM) scheme gives a scalable and flexible solution for increasing the transmission rate, being extremely robust to chromatic dispersion as well as polarization mode dispersion. Nevertheless, as any coherent-detection OFDM system, the ov...