证明了在符号定时精确已知时，时域估计方法和之前提出的频域估计方法的等价性。
Equivalence of the proposed method and the frequency domain estimation method proposed previously is proved.
在分析几种常用的气象回波谱矩估计算法的基础上，提出了一种改进的频域估计算法。
Then we propose an improved spectral processing algorithm based on comprehensive analysis of several commonly used SM estimators.
该方法使用了时频同步跟踪环路，从数据子载波提取相位误差，并利用频域插值补偿多个用户的估计频偏。
The system uses time-frequency tracking loops to extract phase errors from data subcarriers with frequency interpolation to compensate for the estimated carrier frequency offsets.
在基于频域导频的信道估计中，研究了导频子载波处的信道估计方法和数据子载波处的信道估计方法。
In the frequency domain pilot channel estimation, this thesis studies the pilot subcarrier and data subcarrier channel estimation algorithms.
提出了一种基于平方相干函数的频域自适应最大似然时延估计算法。
A frequency domain adaptive maximum likelihood (ML) time delay estimation algorithm based on squared coherence function is proposed.
提出了一种基于频域自适应滤波的维纳加权时延估计算法。
Wiener weighting adaptive time delay estimation algorithm based on frequency domain is presented.
从系统设计角度研究了MIMO-OFDM系统的信道估计方法，提出一种基于空频域的最优导频设计算法。
The MIMO-OFDM channel estimation method is researched based on the system design, and a space-frequency domain optimal pilot-tones design algorithm is presented.
介绍了测量正弦信号的频域方法——传统谱估计方法及现代谱估计方法。
The frequency methods of measuring sine signal are introduced, which are traditional spectrum estimation and modern spectrum estimation.
通过研究多径信号频域码空间和数据矢量空间，采用噪声子空间技术进行盲信道估计。
By investigating the code space in frequency domain and the data vector space of the multipath signals, the noise-subspace-based approach is used to perform blind channel estimation.
提出了一种基于频域高阶累积量的信号频率和到达角联合估计算法。
In this paper, a new cumulants-based method for the joint estimations of frequency and DOA of spatial signal was discussed.
频域极大似然法则是一种有效的方法，它具有频域计算简单，同时估计又是渐进无偏和一致的优点。
The frequency domain maximum likelihood method is a very efficient method, the advantages of which are simple in computing, un biased and consistent.
该算法直接在频域上对杂波谱参数进行估计，具有算法简单，易于实现的优点。
The algorithm directly estimates the clutter spectral parameters in the frequency domain and has such advantages as simplicity and easy implementation.
根据该导频的特性，提出了一种改进的频域最小二乘信道估计算法。
Based on characteristics of the proposed pilot, an improved frequency domain least squares channel estimation method is proposed.
通过构建空间时频分布矩阵，和传统的阵列信号处理方法相结合，从而得到一种新的时频域的波达方向估计方法。
It presents a new method of DOA estimation in time-frequency domain, via establishing the STFD matrix and combining the traditional methods of array.
针对频域信道盲估计的相位模糊问题，提出了基于非对称调制星座的频域信道盲估计方法。
Aiming at the phase ambiguity of the blind channel estimation in frequency domain, a blind channel estimation method in frequency domain based on dissymmetrical modulation constellation was proposed.
利用对信号的频域分析，实现对远动通道信噪比估计，从而实现对远动通道中各项参数的全面监控。
The SNR of the remote channel can be estimated based on the frequency spectrum analysis, which leads the monitoring of the all parameters of the remote channel.
基于频域子空间思想，给出了一种适用于非周期扩频系统的多径时延估计方法。
Based on the idea of frequency domain subspace, a multipath delay estimating method for aperiodic spreading system is proposed.
以频域解析方法，研究由地面重力数据、全球位模型确定区域重力大地水准面的相对精度估计。
Relative accuracy of regional gravimetric geoid determination is estimated by an frequency domain analysis, which is determined by regional terrestrial gravity measurements and geopotential model.
因此本文提出了环境自适应频域均衡的概念：根据信道估计的结果来自适应地选取合适的频域均衡算法。
Thus, a notion of channel adaptive equalization is presented in the paper. Relative algorithm is adaptively selected according to the channel estimation result.
本文提出一种定量无损估计超薄弹性层声速、厚度和密度参数的低频超声波频域定征方法。
A frequency domain characterization method using low frequency ultrasound is put forward to estimate parameters of ultra thin elastic layers, such as: the sound velocity, thickness and density.
基于频域模型的UWB到达角估计方法只能解决非相干源问题，因此提出了一种改进的估计方法。
An estimation method of direction of arrival (DOA) for UWB based on frequency modeling cannot deal with coherent sources.
本文重点对单载波频域均衡(SC -FDE)传输方案中的信道估计和频域均衡算法进行了研究。
In this paper, channel estimation and FDE algorithm in the SC-FDE system are mainly studied.
本文针对载机惯导参数误差较大的实际情况，提出了改进的频域和时域多普勒质心估计算法。
Under the condition that marked inertial navigation units(INU) measurement errors do exist, two new Doppler centroid estimation techniques in frequency domain and time domain were proposed.
作为频域信道估计的训练序列要求具有平坦的频谱特性，可以快速准确地对信道进行估计。
The training sequence of channel estimation in frequency domain should have flat spectrum, which can estimate channel fast and exactly.
单矢量传感器的互谱估计，将时域随机过程变换成了频域随机变量。
Cross spectrum estimation based on a single vector sensor has turned random process in time domain into random variables in frequency domain.
该算法采用频域分块估计候选基音周期的范围，提高了算法的计算速度。
The proposed algorithm adopts frequency partition to estimate the range of pitch period, improving the computational speed.
并就其中的时域法和频域法进行了改进，将二者结合起来，使之更有效地对速度进行估计。
Then, an improved method by combining the time domain method and frequency domain method is provided.
同时，通过消除频域导频时域序列的自相关误差，能有效降低由DFT谱泄漏导致的信道估计误差。
At the same time, the channel estimation error, caused by the spectral leakage of DFT, can be reduced by canceling the auto-correlation error of the time-domain sequence of frequency-domain pilots.
计算结果表明：渐近波形估计技术不但能准确地逼近矩量法的精确数值解，还可以较快的提高计算速度，但在加速计算导体宽角度与宽频域雷达散射截面时具有不同的效果。
The computation results indicate that the AWE technique not only can well approximate the exact numerical solution, but also improve the velocity of calculation and save the calculation time of CPU.
计算结果表明：渐近波形估计技术不但能准确地逼近矩量法的精确数值解，还可以较快的提高计算速度，但在加速计算导体宽角度与宽频域雷达散射截面时具有不同的效果。
The computation results indicate that the AWE technique not only can well approximate the exact numerical solution, but also improve the velocity of calculation and save the calculation time of CPU.
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