不过，对测定目标物距离来说，声波运行的速度太慢，因此，声波回声测距法在实用中有其局限性。
Thus this soundwave echo method has its limitation in practical use.
针对单向网络性能测量过程中存在的时钟同步问题，提出了基于法向距离最小的优化目标。
For the problems of clock synchronization in one-way network performance measurement. This paper puts forward the optimizing goal of minimizing normal distance.
采用解析法建立了攻击机目标搜索模型；分析了对比度和能见距离对发现概率的影响。
Analytic method was used to build up a target searching model for the attacker, and the effect of contrast and visible distance on detection probability was analyzed.
本文先用面积法求出线式巡逻潜艇发现目标的概率，然后对潜艇发现目标距离作了分析。
This article first works out the finding probability of linear patrol submarines through area method. then analyses the find distance of patrol submarines.
然后，以特征系数作为识别特征量，采用最小距离分类法，实现了自动目标识别。
Then, the feature coefficients are classified by the minimum distance criterion to recognize the target automatically.
用模拟法计算防空武器系统对高速目标的服务概率时，为体现目标速度对系统服务概率的影响，应当把目标流看成是距离轴上的泊松流。
When calculating service probability of anti-aircraft to high velocity targets by method of Monte Carlo, targets should been regarded as Poisson Stream on axis of distance.
针对典型的空间目标，文章采用稀疏成份分析法研究了一维距离像的超分辨重构和特征提取问题。
Aiming at the classic space targets, this paper discusses the reconstruction and feature extraction of HRR profiles by sparse component analysis.
本文给出了距离门限法，提出反向时间门限法和时间门限法等关联法静态去除虚假目标。
Distance threshold method is presented as an association method to erase ghosts statically, while back-time threshold method and time threshold method are proposed for the same purpose.
由目标的实测数据，计算特征向量总体的均值和协方差矩阵及其逆矩阵，由距离判别法进行目标识别。
The mean and covariance matrixes and their inverse matrixes of all eigen vectors are obtained through measured data of the target. And the target is recognized by techniques of range discrimination.
本文介绍了把广义空间最小距离法用于多目标船型方案选优的数学模式。
In this paper, a mathematical model for the application of generalized-space shortest-distance method to the optimal selection from the multi-objective schemes of ship form is introduced.
进而将两种SVD算法应用在特征子空间雷达目标一维距离像识别法中，使用实测数据对其进行速度验证和性能评估。
Then, the performance of two SVD algorithms and feature subspace radar target recognition algorithm based on SVD are evaluated according to real data of planes.
利用单距离多普勒干涉法对旋转目标进行了成像，实现利用成像结果提取微动特征参数的目的；
By introduced the micro-Doppler, this paper mainly analyzed the parameter extraction method, which can extract the angular frequency, amplitude and phase of the micro-motion target.
利用单距离多普勒干涉法对旋转目标进行了成像，实现利用成像结果提取微动特征参数的目的；
By introduced the micro-Doppler, this paper mainly analyzed the parameter extraction method, which can extract the angular frequency, amplitude and phase of the micro-motion target.
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