منابع مشابه
Asymmetric-spectra Methods for Adaptive Fm Synthesis
This article provides an overview of further methods for producing hybrid natural-synthetic spectra with adaptive frequency modulation (AdFM). It focuses on three different techniques for the generation of asymmetric spectra based on single-sideband FM, asymmetric FM and Split-sideband synthesis. The first two techniques are applied to the variable delay line implementation of AdFM, whereas the...
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In digital transmission of binary (+l, 1 ) signals it is desirable that the stream of pulses which constitutes the signal have no dc, that is, that the power spectrum go to zero at zero frequency. It is desuable that, for a given efficiency or entropy, the spectrum rise slowly with increasing frequency. We have obtained the spectrum for selected blocks with equal numbers of plus ones and minus ...
متن کاملVibrational spectra of some binary semiconducting oxide glasses
The frequency-dependent complex relative permittivities of binary semiconducting V205-P205 glasses containing various amounts of vanadium have been measured at ambient temperature in the infrared region by power reflection spectroscopy. The measured values of the static constant, ~0, and high frequency constant, s=, are used to calculate the small polaron binding energy, Wp, and the activation ...
متن کاملSpectra and structure of binary azeotropes VI-benzene-methanol.
Benzene and methanol make a minimum boiling point homogeneous binary azeotrope with the mole ratio 2:3. Some characteristic vibrational modes, as well as (1)H NMR signals change due to the azeotrope formation. The extend of interaction of these molecules causes significant changes on some vibrational modes involved, and (1)H NMR signals show some changes on their position. No IR, Raman, and NMR...
متن کاملSUMMARY AND DISCUSSION OF SIGNAL-TO-NOISE RATIO IMPROVEMENT FORMULAE FOR FM and FM/FM LINKS
Frequently, a need exists to compute the postdetection (recovered data) signal-to-noise ratios (SNR) in a given frequency modulated (FM) or double frequency modulated (FM/FM) transmission link; alternately certain postdetection SNR requirements are established, and the link’s parameters must be correspondingly specified. In either case, relationships that clearly relate postdetection SNR to lin...
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ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 1975
ISSN: 0018-9251
DOI: 10.1109/taes.1975.308130