dds造句
1 DDS front end of a serial communication programming procedures.
2 The transmitterof DHF uses DDS to synthesize frequency.
3 Direct digital synthesis(DDS)is an all digital frequency synthesis technique. Because of its special theory and construction, it has many kinds of modulation capability.
4 Direct Digital Frequency Synthesis ( DDS ) technology is realized on complex programmable logical component ( CPLD ) with hardware description language.
5 Then, comparing and studying the methods of DDS + PLL,[www.] it discussed stray and relative noise.
6 This dissertation focuses on the realization of L-band sweep signal source based on Direct Digital Synthesis (DDS) and Phase Locked Loop (PLL).
7 Based on the researching in the principle of DDS chip AD9854, This paper presents a design of wireless compass test signal generator.
8 The direct digital synthesizer(DDS) is used to sweep frequency for a sandwich piezoelectric transducer two admittance circles of the transducer about two different resonance frequencies is measured.
9 Direct Digital Synthesize (DDS) is used to generate clock signal at any frequency so that data generator can output data at any rate.
10 A new synthesis method of baseband echo power spectrum, which adopts Direct Digital Synthesis (DDS) technology, reduces greatly the clock rate and data memory.
11 DDS - 11 A digital conductivity instrument for laboratory measurements of conductivity of liquids.
12 PLL frequency synthesizer with DDS reference will adapt to local oscillator of modern radio.
13 Through the DDS CMOS chip AD 9851 , the system produces a 64 points sampling signal.
14 Document delivery service(DDS) facilitates the utilization of the traditional or non-local electronic document resources.
15 For example, the following command creates a one-member file with CCSID 62251 using Data Description Source (DDS) and places it in a library called DSTPRODLB.
16 The DDS signal generator which can adjust signal phase signal frequency and complex wave is designed.
17 The technology of direct digital frequency synthesis ( DDS ) , is a new typed synthesizer technology and signal frequency methods.
18 Realization of DDS depends on the digital device of high speed and high performance.
19 A design of frequency synthesizer combining DDS with a chain of frequency multiplier is given.
20 The DDS technique is mainly described, and the basic principle and the composition of the signal simulator are introduced with a complex structure strata echo signal.
21 With integration of DDS and computer technology, the tone burst instrument is well designed to meet the new testing standard of the sound level meter.
22 This article describes the design of a linear sweeping frequency signal generator using DDS technology.
23 This design construct an sinusoidal signal generator based on DDS(Direct Digital Frequency Synthesis), completed by MCU AT89S52 and necessary analog circuit.
24 Each of them is composed of high frequency amplifier, intermediate frequency amplifier and sampling, digital phase uprightness intersector, DDS and the S band signal inspirator for the transmitter.
25 The basic theories of the frequency synthesis , PLL , DDS, DDS + PLL are introduced first in this paper.
26 Compared to most of the programmable counter or timer circuit, the output signal of DDS chip changes fast respond in frequency switching and high accuracy.
27 The main blocks are CIC anti-alias filter, decimator, DC canceller, Iterative multiplier, half-band filter, IIR low pass filter, DDS etc.
28 The improvement efficiently(eliminates) the quantitative error of the frequency control word, simplifies the control of DDS, decreases the required source to implement DDS.
29 Theoretically study the expert system ( ES ), Decision Support System ( DDS ) respective specialty and their common characteristics.
30 Direct digital synthesis(DDS) is an advanced all digital frequency synthesis technology, based on the PM function of DDS, this paper gives the design scheme of a DDS digital phase shifter.
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