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As the basis of the tracking algorithm, an echo model is the key to radar altimeter design. 雷达高度计回波模型是设计、检验高度计跟踪算法的基础,是高度计设计的关键性环节。
In order to analyze imaging problems in spaceborne bistatic SAR system, it is important to establish a relevant radar echo model. 摘要为了研究星载双基地SAR系统成像的相关问题，必须先建立其回波信号模型。
According to the idea of establishing monostatic target model,the echo model for a moving target model along bistatic baseline was established by the theory of analytic geometry. 根据建立单基地雷达运动点目标回波模型的分析思路,运用解析几何的方法,建立了双基地沿基线运动目标的回波模型。
Based on these, an echo model of spaceborne bistatic SAR system for image processing is established.Through simulation, the error of range model is analyzed. 通过仿真计算分析了信号模型中距离模型的误差，结果表明，误差对成像的影响完全在可接受的范围以内。
The echo model of moving target is established based on three channels with the slant-placed antennae in terms of the equivalent phase center principle. 利用等效相位中心原理建立了天线斜置情况下三通道运动目标回波信号模型，给出了天线倾斜角对动目标检测、最小可检测速度和盲速的影响。
In the simulator, sum-difference beams method based on point scatterer echo model which includes the random fluctuation character of object radar cross section is used to simulate target echo. 对于目标回波的模拟，本文在考虑目标雷达散射截面积起伏特性的基础上，采用基于点散射体回波信号模型的和差波束法来实现。
Then the radar echo models and their realization methods were studied, especially on radar targets and land clutter. 然后分析了雷达回波信号模型，重点讨论了雷达目标和地杂波的信号模型及产生方法。
The cluttering area wherein the fuze antenna illuminates is distributed into small clutter cells and the clutter modeling is built up as the method of fuze target echo modeling. 对天线照射区域内的杂波进行了分割，采用近似目标回波的处理方法对杂波进行了建模，并将该方法应用到引信目标模拟器中。
Universal Radar Altimeter Echo Model and Its Application 通用型雷达高度计回波模型及其应用
Her performance was cheered to the echo. 她的表演获得长时间的喝采。
The bird-song is the echo of the morning light back from the earth. 鸟的歌声是曙光从大地反响过去的回声。
Standing by him was a model worker. 站在他旁的是一位劳动模范。
His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
I think I can get that special model for you. 我想我可以为你找到那种特别的型号。
Study for Radar Target Echo Models 雷达舰船目标回波建模研究
She has been held up as a model worker. 她被推举为模范工作者。
He showed us a model of the new office building. 他给我们看了新办公楼的模型。
He taught Tom how to make a model airplane. 他教汤姆作模型飞机的方法。
John is repairing his model plane at his leisure. 约翰不慌不忙地修理着他的航模。
The old sailor chipped out a tiny model boat. 那名老水手一点儿一点儿地削出一个小船模型。