you could use the following code to replace the multi-echo statement, and UNIX would only need to process a single execution
可以用以下代码替换多个echo语句，UNIX 只需处理一次执行
The interferometric phase of layover region is not accurate due to the superposition of multi-echo, it makes the discrimination difficult in phase unwrapping.
由于多点回波叠加，叠掩区域的相位并不准确，而且在相位解缠中影响判别，因此对叠掩区域进行识别具有重要意义。
In America prospects for the "multi-family apartment" rented sector are helped by the "echo-boomers", a youthful bulge in the population.
在美国，由于“回声潮一代”——即数量突增的年轻人口——起到的促进作用，“多户公寓”租赁业的前景向好。
Multi channel acoustic echo cancellation (AEC) systems suffer from the non uniqueness problem of the adaptive identification solution because of the correlation of the input signals.
多路回波消除问题的本质难点是由于多路输入信号之间的强相关性而导致的自适应滤波器解不唯一的问题。
Several important parts are analysed and discussed, which include echo signal, azimuth processing, range processing multi-looks processing and Doppler parameters estimation for spaceborne SAR.
分别对星载sar处理的雷达回波信号、距离处理、方位处理、多视处理和多普勒参数估计几个主要部分进行了分析和讨论。
The simulation results show that this method is not only suitable for the detection and the parameter estimation of multi target radar echo signal, but also good at reducing noise.
仿真实验表明，该方法能有效地检测多目标雷达回波信号并准确地估计其参数，而且有较好的抗噪声性能。
Some methods of enhancing detection performance in dealing with the single pulse echo signal and the multi-period pulse bunch echo signal by accumulating are summarized.
阐释了单个脉冲回波信号和多周期脉冲串回波信号，利用积累来提高检测性能的多种方法。
A new method for ultrasonic distance measurement based on ultrasonic circulation and multi pulse echo principle is presented in the paper.
本文介绍了一种基于超声波循环反射测量原理的高精度超声测距方法，并给出了以单片机为核心的测距系统的组成。
Multi-site and large scale faulting anomaly may echo each other with the strong seismic activity.
多场地、大范围的断层活动异常可能与强震活动相呼应。
In the multi-channel echo cancellation, the nonlinear pre-processing is always used to overcome the non-convergence of the filter caused by the strong correlation of input signals.
非线性预处理是解决多通路回波消除中因输入信号间的强相关性而引起的滤波器不收敛的有效方法。
It also carries out surveys through two specially-designed vessels which are fitted with the latest type of equipment including multi-beam echo sounders.
该部配备两艘经过特别设计的测量船，船上装有最新类型的设备，包括多波束回声。
To simulate the sonar echo of the underwater moving target, a high precision and multi-function underwater target simulation technique is proposed.
为了模拟水下运动目标的声呐回波，研究了一种高精度、多功能的水下目标回波模拟技术。
Multi-Beam Echo Sounder is an absolutely necessary seafloor mapping device with high accuracy and high efficient at 21st century. It is much fitted to sweep mapping for wide area.
多波束测深仪是高精度、高效率的地形测绘设备，适合大面积的扫海测量作业，是21世纪水下地形测量必不可少的测绘仪器。
The algorithm is fast and accurate with a strong anti-jamming capability, which can be used for echo signal analysis and processing in real-time multi-beam sonar systems.
通过实时提取信号的幅度及形状的综合特征计算出信号的时延。该方法具有较强的抗干扰能力，算法快速、准确，适合于多波束声呐系统的回波信号实时分析处理。
The algorithm is fast and accurate with a strong anti-jamming capability, which can be used for echo signal analysis and processing in real-time multi-beam sonar systems.
通过实时提取信号的幅度及形状的综合特征计算出信号的时延。该方法具有较强的抗干扰能力，算法快速、准确，适合于多波束声呐系统的回波信号实时分析处理。
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