时延估计是被动声定位的关键。
Time-delay estimation is the key to the passive acoustic location.
本文研究了带通信号的时延估计问题。
Time delay estimation for bandpass signals is discussed in this paper.
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.
广义互相关函数，用于时延估计的运算，很好用。
Generalized cross-correlation function for time delay estimation of the operation, it just works.
在论文中，对典型的时延估计方法做了研究和模拟实验。
In this paper, some experiments are done to test the typical TDE theories, which are fatal to the detection and bearing estimation.
研究了基于时延估计的低空目标声测无源定位理论与算法。
The theory and algorithm for low altitude target localization based on time delay estimation (TDE) is studied.
文中提出采用线性调频Z变换的方法来提高时延估计的精度。
One way of using Linear Convolution Transform (CZT) has been presented to improve the accuracy.
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.
该文提出了适合于异步带限DS - CD MA系统的时延估计算法。
An algorithm for time delay estimation in asynchronous band-limited DS-CDMA systems is presented.
本文提出了一种基于最小二乘（LS）自适应AR建模的时延估计方法。
A high resolution time delay estimation based on the LS lattice adaptive AR power spectrum estimation is proposed.
研究了一类非平稳信号具有随机幅度的多项式相位信号的时延估计问题。
A parameter estimation method of polynomial phase signals is studied in this paper.
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.
针对LF M脉冲雷达的宽带回波信号的多普勒频移和时延估计问题进行了研究。
In this paper, the Doppler frequency and time-delay estimators of wideband echoes for LFM pulse radar are discussed.
阐述了三阶累积量时延估计方法基本原理，并将该方法用于断层检测和落差估计。
The principle of third-order accumulation method is used to detect fault and estimate the throw of fault.
在时延估计方法研究中，提出了超宽带雷达中基于小波多分辨方法的时延估计算法。
In the research of time delay estimation in ultra-wide band Radar, a time delay estimation method based upon the multirate theory in wavelets analysis is proposed.
多途时延估计广泛的应用于目标定位，波达方向估计等领域，因此具有十分重要的意义。
Time delay estimation was widely used in many areas such as target localization, directions of arrival (DOA) estimation.
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.
为了提高时延估计精度，在广义相关时延估计的基础上本文又提出了基于基小波的二次加权法。
To improve the time delay estimation accuracy, this paper introduces the re-weighting method with mother wavelets based on the generalized correlation method for estimation of time delay.
由于循环相关的平稳特性，即使在较大延迟量存在的情况下，仍然能够达到准确的时延估计效果。
The accurate time delay estimation of a signal can be gained even if there is a great time delay because of the stationary performance of circular correlation.
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.
论文分析了基于语音激励信息的时间延迟算法分类，描述了基于EGCI的时延估计方法基本原理。
This paper analyzes the new type of method for localizing the source using the excitation information in speech, and presents the theory of time-delay estimation based on the EGCI.
常用的时延估计方法是广义互相关方法，按方法对于较少先验知识、大背景噪声具有一定的局限性。
The common using method is generalized cross correlation, but it has a definite limitation to those without transcendental information on the occasion of having much noise.
广义相关是解决时延估计的重要技术措施，采用极大似然加权进行时延估计时方差可达到克拉美罗界。
Generalized cross correlation is an important technical measure to solve time delay estimation problem. Time delay estimation variance can reach CRLB by using ML weighting.
最后给出基于建立信号模型和互功率谱相位的时延估计方法。该方法对噪声和混响均具有很强的鲁棒性。
A time delay estimation method based on onset signal and CSP is proposed, it's robust to noise and reverberation.
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.
计算机仿真结果和湖试数据分析表明，将广义相关时延估计法应用于被动定位系统可以获得较高的定位精度。
The computer simulation results obtained and real data analysis indicate that a GCC TDE method can ensure high estimation precision when it is used in passive localization systems.
阐述了广义互相关时延估计算法的原理并对其作了详细的数学推导，研究各种加权函数的形式以及性能特点。
This thesis presents the theory on the generalized cross-correlation method and its detailed derivation mathematically. Five generalizations of the cross-correlation function are listed and discussed.
辅助长码直捕的一个最重要的先验信息是时间信息，卫星信号传播时延估计是减少时域搜索范围的一个重要方面。
Time is important information for fast and direct acquisition of military code, and compression of signal's propagation delay time uncertainty is an effective means for it.
通过实验室的模拟器调试和湖试的验证，证明了水声信号处理模块符合系统要求，具备较高的时延估计精度及可靠性。
Through lab simulator test and lake trial, the underwater signal processing module is proved to be satisfied with the system's demand and is with high time delay precision and reliability.
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