基本释义
n.
调幅
相关例句
amplitude modulation
2.Decay of amplitude modulation property of song and an analysis of sounding mechanism in mottled cicada(Gaeana maculata Drury)
3.Units: megahertz (MHz) AM (amplitude modulation), 200 and up are for military use, but are staffed by the same civil controllers.
4.A method to measure the amplitude modulation (AM) signal with the DPSD algorithm realized by an A/D converter and a computer is presented.
5.(2) Either the amplitude modulation EMW or the ELF continuous and pulse EMW has the same results in producing the window bio effect. The modulation waves have the same frequency with the ELF waves;
6.The paper put forward to adopt the method that the signals were preamplified and modulated by amplitude modulation, then demodulated by AM in-phase demodulation using PLL.
7.This thesis begins with HFC network theory and DOCSIS, analyses modulation/ demodulation process of data communication in HFC. Then, several theories are analysed including QAM (Quadrature Amplitude Modulation), Nyquist root square filter , FEC(forward Error Correction), MAP(Bandwidth Allocation Map).
8.Residual amplitude modulation(RAM) in electro-optical phase modulators(EOM) and its influence on the laser frequency shift of iodine-stabilized 532 nm laser are investigated experimentally.
9.On this basis, we achieve the AM (Amplitude Modulation)with MC1496 multiplier and also produce the binary code with FPGA (Field Programmable Gate Array)chip EP II 1K30,realize the PSK(Phase Shift Keying),ASK(Amplitude Shift Keying),FSK (Frequency Shift Keying)with AD9850.
10.Based on CPLD and the technology of Direct Digital Synthesis,this paper presents the design and realization for a pair of orthogonal sinusoidal signals with a precise control of the phase difference and a kind of general amplitude modulation signal with a programmable modulation index control.