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- Simulation of the Effect of Radar Antenna Directionality on Target Echoes Image 雷达天线方向性对目标回波图像影响的仿真
- target echoes image 目标回波图像
- The director could be slewed quite quickly until the range operator picked up the target echo. 指挥仪快速回转直到测距手捕获目标的反射回波。
- Target echo signals are the main information source in underwater acoustic detection system. 目标回波信号是水声探测系统主要的信息来源。
- The parallel arithmetic of distribute space borne SAR ground target echo data simulating procedure was examined. 摘要对分布式星载SAR系统地面回波仿真程序并行化算法进行了研究。
- The coronal T1WI image was superior to coronal T2WI and gradient echo images in demonstrating the mandibular nerve. 冠状面T1WI图像对下颌神经的显示优于冠状面T2WI及梯度回波序列图像。
- Conventional methods based on the intensity of target echo signal will result in high false alarming rate if mine-like object such as rock laying on the seafloor. 传统的基于目标回波信号强度的检测方法在海底存在岩石等类似于水雷等人造目标的情况下，常会导致较高的虚警率。
- 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。
- When the target echo on the radar scope is bisected by the center bearing line, the director is trained on the target, and the correct value of director train is determined. 当指挥仪旋转的时候，其上的雷达天线也跟着转动，当显示器上的目标回波被中央方位线（center bearing line）分为两半时，雷达天线就对准了目标，指挥仪的旋转角也就确定了。
- Based on the characteristic of target echo in ISAR, the original method of Doppler center estimation is ameliorated to increase the motion parameter estimation precision. 针对ISAR中目标回波的特点，对原始的多普勒中心估计方法进行了改进，提高了运动参数估计精度。
- A modified range-Doppler algorithm for spaceborne SAR with large squint angle is presented and the quality of images of simulated point target echoes gained by two algorithms are list in the paper. 提出了一种适合大斜视角星载SAR系统的改进距离－多普勒算法，并给出了处理仿真点目标数据得到图像质量的比较。
- A modified range| Doppler algorithm for spaceborne SAR with large squint angle is presented and the quality of images of simulated point target echoes gained by two algorithms are list in the paper. 提出了一种适合大斜视角星载sar系统的改进距离－普勒算法，并给出了处理仿真点目标数据得到图像质量的比较。
- The reasons of the paired false target echoes are analyzed and the paired echoes are divided into two types,one is called "undersampled type" and anather,"velocity mismatched type". 分析了“欠采样”成对回波和“速度失配”成对回波的形成机理,给出了成对回波定位和强度的通用计算公式。
- A method of underwater target dimension identification was proposed by special bearing distribution data of body target echo based on identification theory of a target bearing method. 摘要阐述基于目标方位走向法的目标识别理论，提出利用体目标回波的空间方位分布信息识别水下目标尺度信息的方法。
- Shoal Identification Based on Echo Image of Fish Body 基于鱼体回声图像的鱼类识别算法
- The radar signal model in EW condition is discussed in this paper,including the model of emitting signal,the model of target echo signal,the model of jamming,the model of clutter and the model of noise. 文中建立了电子战条件下雷达信号环境数学模型，包括雷达发射信号数学模型，目标回波信号数学模型，电子干扰（有源干扰和无源干扰）信号数学模型，杂波数学模型以及噪声数学模型
- This dissertation discusses mainly the realization of the radar signal simulator for an Airborne Phased-Array Radar (APAR), the simulation methods of target echo and clutter for APAR, and the application of hi-speed DSP chip in radar simulator. 尤其在近几年，雷达信号模拟器的研制已成为国内外军事研究领域的一个热门研究方向。 本文以某种机载相控阵雷达信号模拟器的研制为背景，对目标回波信号和杂波的模拟理论和算法以及系统实现等问题进行了较为深入的研究，并通过采用高速、高性能的DSP，实现了对机载相控阵雷达信号的实时模拟。
- This paper discusses the application of joint estimation of DOA and Doppler velocity in passive bistatic radar, and analyzes emphatically the passive detection of target echo frequency in passive bistatic radar. 将 DOA与多普勒速度的联合估计定位应用于双基地雷达 ,重点分析双基地雷达系统中对目标回波频率量的无源检测方法。
- In the end, a group of spin echo images(T1 weighted and T2 weighted) produced by the 0.2T MRI are given to demonstrate the satisfactory shimming performance of this active shimming system. 2T开放式永磁型医用核磁共振成像仪所研制的有源匀场系统的基本结构、工作原理和匀场方法,并在最后给出了该MRI通过自旋回波成像方式产生的一组影像(T1加权和T2加权)以展示该系统良好的匀场性能。
- This system is a array processor system based ADSP21160, it can simulate environment noise, target echo and reverberation.It can be controlled by computer or underwater homing weapon. 该系统使用ADSP21160构成阵列处理器系统，采用全数字方式产生噪声、目标回波和混响，既可以在主控机控制下工作，也可在制导武器控制下工作；
