modulation signal

The Study on Measuring the Amplitude Modulation Signal with the DPSD Algorithm

应用DPSD算法测量调幅信号的研究

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That is mixing the baseband signal ( linear frequency modulation signal and sinusoid signal) with two orthogonal local oscillated signal generated using direct digital synthetic technology to move the baseband signal to intermediate frequency band.

同样运用直接数字合成技术产生基带信号&线性调频信号和正弦信号，与本地载波混频后，将其频谱搬移到中频，完成数字上变频。

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Carrier phase synchronization for trellis coding modulation signal in satellite links

卫星链路网格编码调制信号的载波同步

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This paper, based on the measurement of the impedance-frequency characteristics and attenuation characteristics of the city telephone line network, proposes a method of FDM to transfer carrier signal, such as digital modulation signal, tone carrier signal, etc.

在对市内电话信道阻抗特性、衰耗特性测试的基础上，提出市话线路可采用频分复用的方法传递载波信号，如数字调制信号、语言载波信号等。

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Time-Phase Modulation Signal Analysis Based on Cyclic Spectrum Correlation Technology

基于循环谱理论的时相调制信号分析循环计时电势分析法

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Analysis of Partial Correlation Digital Pulse Compression of Linear Frequency Modulation Signal

LFM信号的部分相关数字脉压分析

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FM launcher can change navigating audio signal into frequency modulation signal, and playing.

FM发射器可将导航音频信号转换为调频信号播放.

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A new lithology identification method based on axial amplitude modulation signal of drill string is proposed.

提出了一种利用钻柱轴向振动调幅信号实现岩性识别的方法.

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In modern Sonar equipment the several signal operation modes are usually required, for instance, the keying single frequency signal operation mode, the keying frequency modulation signal operation mode and etc.

在现代声纳中常要求在一部声纳中同时具有几种信号工作方式的功能，例如单频脉冲信号工作方式、键控式调频信号工作方式等等。

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While a sine-wave modulation signal is shown, any wave shape could be used.

然而当正弦 波调制信号 显示时, 任何波形都可以使用.

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The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.

该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。

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This method plays an important role in the detection of communication signal such as multi-frequency modulation signal and time-frequency code signal.

它可以把多个正弦信号相干累加到一条谱线上，从而可以在很低信噪比下有效检测信号，在多频率调制和时频二维编码等通信信号检测上有重要应用价值。

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The generation of modulation signal, synchronous demodulation and signal processing in R-FOG can be realized in a single FPGA.

在单片FPGA上实现了集调制信号产生、同步解调及信号处理等功能的检测电路。

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Development of Multi-function Frequency Modulation Signal Accrue Implement

多功能调频信号发生器的研制

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