The spread of analog audio modulation and bandwidth by the decision, there are many shortcomings with the inconvenience.
模拟音频的传播受到调制方式和带宽的决定，有非常多的缺点与不方便。
As a result, the computer simulations show that the LPI capability of the new DSSS modulation become more effective within the same bandwidth and Spread Spectrum gain.
计算机仿真结果表明，在调制带宽或扩频增益不变的前提下，提高了DSSS调制信号的低概率截获性能。
On the sending end, the paper focuses on Error Control Coding, Waveform Shaping, Spread Spectrum and 8PSK modulation, etc.
在发送端，主要研究了差错控制编码，波形成形、扩频和8PSK调制等关键技术；
Aiming at the spectrum spread problem of traditional digital modulation signals, a time-phase modulation (TPM) method with abrupt phase change characteristic is proposed.
针对传统数字调制信号频谱扩展问题，提出具有相位突变特性的时相调制(TPM)方式。
Merits of the Linear FM are that it is not necessary to have an equalizer or the spread spectrum code modulation.
线性调频调制的优点是：不须在接收端添加均衡滤波器，也不须进行扩频编码。
The modulation types of data link for UAV are simple, such as BPSK, 2FSK , direct spread spectrum. The transmitted rate and anti-interference performance of them are limited.
目前，无人机数据链系统采用的调制模式都比较简单，如2FSK、BPSK、直接扩频技术等，传输速率与抗干扰能力有限。
The spread spectrum communication technology regarded as an advanced modulation technology has been drawing more and more attention.
扩频通信技术作为一种先进的调制技术，日益受到世人关注。
Based on the model, the BER Bit Error Ratio performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK Phase Shift Key...
结果表明移动卫星信道中存在的多径和阴影现象使系统的误码性能恶化，而采用宽带扩频调制则可极大改善系统的性能。
It is emphasized how to select the spread spectrum access code, and how to realize synchronization and modulation etc.
着重介绍了扩频地址码的选择及实现、同步方式和解调方法等。
The paper designs and implements the baseband processing module, the spread spectrum processing module, the IF modulation and demodulation, AGC, synchronization, equalization, etc.
本文设计并实现了基带数据处理模块，扩频处理模块，中频调制解调模块，实现了AGC、同步、均衡等方面的保障。
Two kinds of typical wideband signal, Frequency Modulation (FM) signal and Frequency Spread signal, is analyzed qualitatively with wideband Ambiguity Function.
以宽带模糊度函数为工具定性地分析了两类典型宽带信号，即调频信号和频率分集信号。
A new depth retrieval algorithm based on the model of Gaussian point spread function is proposed, which uses the Gaussian distribution to interpolate the modulation to obtain the accurate depth map.
以高斯模型为基础，根据调制度分布曲线的特征，设计了一种新的高度恢复算法—高斯曲线拟合法。
Chaos masking, chaotic parameter modulation, chaos shift keying, chaotic spread spectrum sequence are discussed in detail.
其中重点分析了混沌掩盖技术，混沌参数调制技术，混沌键控技术和混沌扩频技术的原理。
The transmitter unit mainly consisted of differential encoding, spread spectrum and BPSK modulation and so on.
发送部分介绍了中频发送的差分编码、扩频、BPSK调制等技术；
The current analysis focuses on the performance of BPSK modulation on 2-dimensional spread spectrum system with single-tone jamming.
针对二进制相移键控调制的二维扩频系统，分析了其抗单音干扰的性能。
This function is used to forward link IS-95 system simulation, including the spread spectrum modulation, matched filter, RAKE receiver, and other related communication module.
此函数用于IS-95前向链路系统的仿真，包括扩频调制，匹配滤波，RAKE接收等相关通信模块。
This function is used to forward link IS-95 system simulation, including the spread spectrum modulation, matched filter, RAKE receiver, and other related communication module.
此函数用于IS-95前向链路系统的仿真，包括扩频调制，匹配滤波，RAKE接收等相关通信模块。
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