引入多帧联合统计，以提高多径时延估计精度。
Probability statistics for multipath delay of multi-frame was introduced to improve the performance of multipath estimation.
本文的主要研究内容是不可分辨的多径时延估计。
This thesis focuses on the super resolution TDE in multipath environment.
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.
当采用相关法估计时间延迟时，多径时延的分辨率受到相关函数主(？)宽度的限制。
Multipath time delay estimation is constrained by the width of the signal correlation function when using correlation method.
本文在瑞利衰落模型下，研究了高频电离层信道中多径时延与多普勒频移的随机特性。
In this paper, with Rayleigh fading the random characteristics of multipath time delay and Doppler shift in HF ionospheric channels is discussed.
论文研究了基于多径时延跟踪的信道估计方法，并提出了一种低复杂度的多径时延跟踪方法。
We investigate the channel estimation algorithms based on tracking multipath time delay, a low complexity multipath time delay estimation method is proposed.
在存在背景噪声干扰的情况下，本文提出了一种基于三阶累积量的自适应参数型多径时延估计方法。
Taking into account the noises correlated with signals, multipath time delay estimation based on adaptive parametric approach using third-order cumulants is proposed in this paper.
其中主要为无线衰落信道中的多径传播和散射引起的信号衰落，以及大的多径时延而引起的符号间干扰。
The problems mainly exhibit to be multi-path propagation in the wireless fading channel, signal fading caused by the scattering and Inter-Symbol Interference caused by the long multi-path time delay.
该体制具有较高的频率利用率，可有效地抑制短波信道中多径时延、频率选择性衰落、人为干扰与噪声带来的不利影响。
This new scheme has the advantages of high spectrum efficiency and suppression of multipath spread, frequency selective fading, jamming and noise.
在本论文中，首先对移动传播环境作了描述，特别是对小尺度多径传播造成的幅度衰落，多径时延和多普勒频移进行了分析；
The wireless propagation environment is described first: analyzing the small-scaled fading, including amplitude fading, multi-path time delay and Doppler spectrum spread.
其次，在多径时延的模型基础上，本文分析研究了加权分数低阶协方差时延估计方法和基于加权非线性变换的时延估计方法。
Then, based on the multipath model, this thesis analysed and researched the time delay algorithm based on the weigthed fractional lower order covariance and the weigthed non-linear transformation.
时间延迟估计可以分为单径时延估计和多径时延估计，而多径时延估计是时延估计问题中特别困难但又在实际问题中总是要解决的；
TDE problems can be divided into TDEs of single path environment and multipath environment, while the later has practical application background and is a difficult one in TDE problems.
TTIB（透明带内导音）及FFSR（前馈信号再生）技术是一种可抗无线信道中多径时延及多谱勒频移引起的信号衰落的技术。
Transparent tone-in-band(TTIB) and feedforward signal regeneration(FFSR) is a technology to combat the effects of multipath propagation delay and doppler effect in wireless channels.
在微波视距通信中通常采用二径模型来描述信道，简要介绍了二径模型的频率响应、损伤参数以及多径时延与天线高度、通信距离的关系。
This paper introduces briefly the frequency response, damage parameter of two-ray multipath model and the relationship between multipath time delay, antenna height and communication distance.
本文主要致力于研究新的信道估计算法，明确提出了将多径信道的时延估计和幅度估计分开的信道估计方案。
The subject of this paper mainly focuses on the research of new algorithms and proposes the channel estimation principle explicitly: separate the estimation of multi-path amplitude and delay.
空地通信信道的主要统计特性包括多径衰落特性、多普勒功率谱和时延功率谱。
The statistic model of air-ground radio communication channel is characterized by the multipath fading, Doppler power spectrum and delay power spectrum.
多径分量重叠衰落下的精确时延估计对很多系统而言都非常重要，对于定位技术更是如此。
Accurate time delay estimation of overlapping fading multipath components is vital for many systems, particularly for positioning technologies.
同步跟踪则由多径跟踪的结果精确估计PN序列码相位，并实时跟踪信道各径成分由于多普勒效应产生的时延漂移。
Following, code tracking confirm the PN code phase precisely and track every multipath component's delay drifting due to Doppler effect.
该方法首先通过修正后的TST - MUSIC算法估计多径的传播时延和角度。
In the algorithm, the propagation delays and the angles of multipath are firstly estimated by a modified TST-MUSIC algorithm.
采用边缘检测技术有效减少了TOA参数估计中的多径干扰，提高了时延参数估计的准确度；
The leading edge detection algorithm is proposed to mitigate the effect of multipath in TOA estimation.
这种新方法不但能够分辨时延结构紧密的多径分量，而且能有效改善多径衰减参数的估计。
The algorithm can distinguish close-spaced multipath components, and to improve multipath attenuation parameters estimation effectively.
正交频分复用（OFDM）技术具有很强的抗符号间干扰、抗多径衰落和时延的能力。并且保持较高的传输速率。
Orthogonal Frequnency Division Multiplexing(OFDM) is suitable for high rate data transmission in wireless channels because it can combat Inter-Symbol Interference and multipath fading efficiently.
STSC可以有效估计多径信号的传输时延，同时捕获自适应波束形成的权值。
Using STSC, propagation delays of the multi-path signal can be estimated and the weights for beam-forming can be determined simultaneously.
STSC可以有效估计多径信号的传输时延，同时捕获自适应波束形成的权值。
Using STSC, propagation delays of the multi-path signal can be estimated and the weights for beam-forming can be determined simultaneously.
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