讨论了消除欠采样噪声的途径。
提出了空域欠采样条件下的到达角估计的算法。
Bring forward a algorithm to estimate DOA under the spatial sub-Nyqusit sampling.
基于信息理论评价系统，优化系统设计，控制欠采样噪声。
System assessment, system optimizing designs and aliasing noise control all can be done based on information rate.
受传输带宽限制，网络视频采集系统的采样率低，欠采样噪声严重。
Signal sampling system of video communication over network usually has a low sampling rate suffering from the limited bandwidth, so aliasing noise is big problem.
本文对几种幅度调制波信号的欠采样频率的选择方法及恢复方法进行了研究。
This paper studies choose method and recover method of non-nyquist sampling on some extent modulate wave signal.
论文主要研究时间（频率）、空间欠采样条件下的参数估计与阵列校正方法。
The problem of parameter estimation and array calibration with sub-Nyquist sampling is studied in this doctoral dissertation.
空间积分抽样相位理论分析为消减欠采样产生的折叠混淆效应提供了理论依据。
Phase theory analysis of spatial integral sampling provide theoretical basis for under sampling aliasing reduction.
基于目前硬件实现水平，数字接收机中采用这种欠采样方法是经济可行的方案。
Because of the realization of hardware technique, Subnyquist sampling applied in digital receivers is an economy and feasible project at the present time.
欠采样噪声产生分布于整个画面的小尺寸附加像，给目标识别等应用带来困难。
The small scale artifacts generated by aliasing noise existing everywhere in an image, bring difficulties to some applications, such as target identification.
分析了线性载波调制信号经欠采样后，满足一定的条件时可以恢复基带信号波形。
The Study on the Corelation of Modulation Coefficient and Bandwidth with Modulation Signal Parameters in Angular Modulation;
针对正弦信号时差估计的多解模糊问题，提出采用多周期取点欠采样和多重相关方法来解决。
To resolve the problem of time-delay estimation for sub-sampling sinusoidal signals, a new method composed of multi-period sampling and multi-layer correlation is proposed.
实验结果表明，该方法可有效地突破最大物参角的限制，同时可以消除由于欠采样造成的频谱混叠现象。
The experimental results show that the method can overcome the limitations of the critical angle between the object and reference beams, and omit the frequency aliasing.
文中，欠采样所引入的频率模糊由增加的延迟通道提供的信息加以消除，并提出了相应的频率解模糊算法。
The frequency aliasing due to sub-Nyquist sampling can be resolved by the proposed frequency aliasing resolving algorithm and information from the time-delay channel.
分析了“欠采样”成对回波和“速度失配”成对回波的形成机理，给出了成对回波定位和强度的通用计算公式。
The reasons of the paired false target echoes are analyzed and the paired echoes are divided into two types, one is called "undersampled type" and anather, "velocity mismatched type".
提出了一个欠采样中频收发器的体系结构，它在中频数字化以前先通过欠采样将中频频率变到一个较低的频率。
A receiver architecture is presented that utilizes the subsampling concept to down-convert the IF signal to a lower IF before been digitized.
在玫瑰扫描亚成像系统中，由于采集到图像的不均匀性和欠采样性，用传统的方法很难恢复被扫描物体的图像。
The image got by rosette scanning system is not uniform and lack of sampling. It is difficult to restore the image of scanned object.
基于中国余数定理解频率模糊和解线调方法，提出一种无模糊欠采样的宽带线性调频信号的调频斜率和初始频率的估计算法。
Based on the remainder theorem and direct dechirp operation, an algorithm for estimation of chirp rate and initial frequency of the subsampling wideband LFM signal unambiguously is presented.
为了克服现有的欠采样频率估计方法存在的算法复杂、工程实现困难等问题，本文提出了一种基于虚拟仪器的三采样率切换的频率估计方法。
Based on an auxiliary time-delay channel and ESPRIT approach, a new algorithm for wide band frequency estimation with sub-Nyquist sampling was proposed.
为了克服现有的欠采样频率估计方法存在的算法复杂、工程实现困难等问题，本文提出了一种基于虚拟仪器的三采样率切换的频率估计方法。
Based on an auxiliary time-delay channel and ESPRIT approach, a new algorithm for wide band frequency estimation with sub-Nyquist sampling was proposed.
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