研究了多频带干扰对超宽带调制技术性能的影响。
The influence of multi-band interference on ultra-wideband (UWB) communication is analyzed in this paper.
其研究主要集中在以下几个方面：小型化，宽频带，多频带。
The researches are mainly focus on aspects as follows: miniaturization, wideband, multi-band.
该算法的检测性能优于以前提出的多频带归一化匹配滤波器算法。
The new algorithm outperforms the previously proposed multiband adaptive normalized matched filter algorithm.
研究了复合高斯杂波环境中多频带相干雷达自适应恒虚警检测问题。
The problem of multiband coherent radar adaptive constant false alarm rate (CFAR) detection against a compound-gaussian clutter background is investigated in this paper.
该文提出了一种新的基于射频六端口网络的多频带OFDM解调器。
A novel microwave six-port network orthogonal frequency division multiplexing (OFDM) demodulator is presented in this paper.
为了克服这一性能差距，提出了一种有效的基于多频带uwb系统的差分编译码方案。
To overcome the gap, an effective differential encoding and decoding scheme for multiband UWB systems is proposed.
与直接序列扩频的方案相比，基于多频带OFDM的UWB系统能更有效地捕获多径能量。
The MB-OFDM UWB systems can capture multi-path energy more efficiently than DS-UWB. Much work has been done on the channel estimation of traditional narrow-band OFDM.
其次，本文研究了人耳听觉掩蔽特性，并将听觉掩蔽效应应用于多频带谱减的语音增强方法中。
Then human auditory masking is studied where its characteristic is combined with the multi-band spectral subtraction method.
基于六端口技术的直接变频接收机被证明是一种适用于可重构、重复编程、多频带、多标准的很有前途的接收机结构。
The aim of this work is to research the six-port theoretical background, and design a Ka-band direct conversion receiver front-end based-on six-port.
Verbiscer和她的同事使用斯皮策的长波红外照相机——多频带图像光度计（MIPS），搜索远离土星、稍位于土卫九轨道内的空间。
Verbiscer and her colleagues used Spitzer's longer-wavelength infrared camera, called the multiband imaging photometer, to scan through a patch of sky far from Saturn and a bit inside Phoebe's orbit.
移动通信的迅猛发展，对应用于无线通信系统的天线提出了小型化、宽频带、多频段工作等要求。
With the great development of wireless communication, there comes great demand of multi-frequency and broadband antennas of compact size.
分析结果表明：在多信号输入时，输出功率中确实有输入信号的互调制分量产生，同时可以发现，对于宽频带的行波管，互调制分量对主工作频率输出功率有比较大的影响。
The results show that: when two signals are inputted into TWT, the output power includes the intermodulation components, and the intermodulation components have important effect on broadband TWT.
频率平移电路(172 ~ 188)使得经过带通滤波的若干多通道模拟信号在频域中接邻，而在相邻通道信号之间没有任何保护频带。
A frequency translation circuit (172-188) abuts the multiple channel bandpass filtered analogue signals in the frequency domain without any guard bands between adjacent channel signals.
在研究匹配滤波和重采样原理的基础上，利用频带分割和多通道综合技术实现超宽带信号的脉冲压缩。
Then, a method exploiting the techniques of intersection of spectrum and multi-channel synthesis is presented to fulfill the pulse compression of the ultra-wideband signal.
分析了在信道存在加性白噪声和多址干扰的条件下，频带细化对提高频谱利用率的作用。
The effect of bandwidth division on the improvement of the frequency spectrum utilization is analyzed under the condition of the multi-access interference and Gaussian white noise.
这种技术可以有效的对抗多径衰落以及提高频带利用率。
It can both effectively combat multipath fading and improve bandwidth efficiency.
声光器件由于其固有的高速度、宽频带和可能多波长同时工作的特点而成为研究重点。
They have become the focal point of the research for their characteristics of high speed, wide bandwidth and the capability of simultaneous multi-wavelength operation.
本文首先介绍了微带天线的理论分析方法和数值分析方法，并总结了微带天线小型化、多频段以及展宽频带的各种技术。
First, this article introduces some theoretical methods and numerical methods to analyze microstrip antenna and sum up some techniques for miniaturization, multi-frequency and broadening the band.
首先，运用WBCT对图像进行多尺度多方向分解，提取出各子频带的统计特征量；
Firstly, the method decomposes the coke micrograph with WBCT for multi-scale and multi-direction, and extracts the statistical features from each sub-band.
首先，运用WBCT对图像进行多尺度多方向分解，提取出各子频带的统计特征量；
Firstly, the method decomposes the coke micrograph with WBCT for multi-scale and multi-direction, and extracts the statistical features from each sub-band.
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