提出了前兆应力波扩展与传播的最小阻力或最短波径定律以及地应力波传播的概略模型。
The law of least resistance or shortest path of spread of stress wave as well as general propagation model of stress wave are given.
该算法是对传统MUSIC方法的推广与变形，克服了要求接收信号数小于阵元数的局限，能有效估计时延不同、波达方向相差很小的多径信号的参数。
The algorithm is a development of traditional MUSIC algorithm, so the number of multipath signals can be most of the array elements and can be used to estimate the parameters of multipath signals.
从该电子密度模式和电离层波传播特性出发确定多径分量，计算短波信道相干带宽。
The coherence bandwidth of shortwave channel is calculated by using the density profile and wave propagation features in ionosphere.
算法所用的小波变换相位信息特征对平坦衰落信道具有衰落不变性，对频率选择性衰落信道也具有很强的抗多径能力。
The phase information of wavelet transform used in the algorithm is invariant with respect to flat fading, and can resist multipath fading of frequency-selecting channel in quite a few degree.
用反射波法对该柱基进行了质量检测，发现断桩、缩径桩比例较大。
The pile cutoff and tbe shrinking-diameter piles are discovered and numbered in rather large proportion.
针对采用调频连续波(FMCW)体制的天波超视距雷达的应用场合，提出了一种电离层扰动(慢相径变化)补偿改进算法。
This paper presents an improved arithmetic for extracting and compensating the phase-path variations caused by the ionospheric disturbance in a HF sky-wave OTH radar with FMCW waveform.
基于回归分析，考虑淹没、越浪、波陡、相对水深和相对筒径等的影响，给出了作用在大圆筒上的波浪力和波浪力矩的计算公式，可用于工程实践。
On the basis of regression analysis, the relationship between wave parameters and wave force as well as moment acting on the large diameter cylinder structure is given.
文中推导了采用AR模型和MA模型对多径信道建模的正则方程，提出了采用混合模型消除直达波与杂波的迭代算法。
In this paper the regular equations of ar and MA models built for multipath channels are derived, and an iterative algorithm of direct signal and multipath clutter cancellation is proposed.
通过理论分析对脉搏波在血管中的传播规律进行研究，同时分析了血液粘性、血管壁弹性模量、管径对波的传播的影响。
The viscosity of blood, the elastic modulus of blood vessel and the radius of tube that influenced the pulse wave propagation were analyzed.
提出一种基于优化多带复小波变换的MC-CDMA系统，研究了其在多径瑞利衰落下的性能。
We propose a MC-CDMA system based on the optimized multiband complex wavelet transform (MBCWT), investigate the system performance in multipath Rayleigh fading channel.
利用纳秒级的非正弦波窄脉冲来传输数据，具有传输速率高、功耗低、安全性好、抗多径能力强以及成本低廉等许多优点。
It has many advantages, for example high transmission rate, low power consumption, good security, robustness to multipath and low cost.
在多径传输的情况下，经常需要估计各路径的二维波达方向角度及相对时延。
In the multi path communication scenario, it is needed to estimate the two dimensional angles and relative time delays of each multi path ray.
报导用连续波CO2激光加工机对氮化硅陶瓷的激光打孔试验，获得了深径比达18.75的结果。
The test for laser drilling of Si3N4 ceramics by CW CO2 laser processing system is reported. The result shows that the proportion of depth to diameter is 18.75.
现有的阵列校正算法几乎都没有考虑存在多径效应时的情况，对此提出了一种米波雷达低仰角环境下波达方向估计和阵列通道误差校正的新算法。
Most of the existing array calibration methods require a specific type or class of sources, and need some pre-knowledge of the sources parameters such as directions-of-arrival (DOA).
现有的阵列校正算法几乎都没有考虑存在多径效应时的情况，对此提出了一种米波雷达低仰角环境下波达方向估计和阵列通道误差校正的新算法。
Most of the existing array calibration methods require a specific type or class of sources, and need some pre-knowledge of the sources parameters such as directions-of-arrival (DOA).
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