Besides, the target echo signal is often weak with strong noise, so data acquisition (DAQ) card should sustain high sampling frequency and resolution.
由于目标回波的低信杂比，需要采集卡具有较高的采样率和分辨率。
The research would be summarized as follows:(1) MMWLFMCW radar target echo signal expressions are derived in the time and frequency domain respectively.
本文的主要内容包括以下几个方面：（1）推导了毫米波LFMCW雷达目标回波信号在时域和频域上的表达式；
The inverse synthetic aperture radar (ISAR) echo signal model of fast-moving target and the effect of target fast-moving on ISAR signal processing were analyzed.
分析了高速运动目标的逆合成孔径雷达（ISAR）回波信号模型和目标高速运动对ISAR信号处理的影响。
The radar target simulator is mainly used for producing radar echo signal, which contains radar targets and clutter information.
雷达目标模拟器主要用于复现蕴含雷达目标信息和杂波信息的雷达回波信号。
In processing of array signal, Direction of Arrival (DOA) of target can be obtained by extracting spatial frequency of echo.
在阵列信号处理中，提取回波信号中的空间频率，可以得到目标的方位信息。
Radar target simulator is used to generate radar echo signal comprised of target and radar environment.
雷达目标模拟器是用于产生包含目标以及雷达环境信息的雷达回波信号。
Theprinciples of the laser active reconnaissance are explained via the comparison of the echo signal. target ranging isrealized by adopting the principle the pulse laser ranging.
通过对比研究激光对漫反射大目标、小目标和“猫眼”光学镜头的回波信号，给出激光主动侦察原理：对目标的距离测量应用脉冲激光测距原理实现；
In the process of target detection, depth bomb fuze will undergo the interference from echo signal of neighborhood bomb that is the primary factor which causes high false-alarm probability.
深弹引信在对目标进行探测的过程中会遇到来自邻近深弹回波信号的干扰，邻弹干扰是导致虚警概率增加的最主要因素。
The target echo of passive radar based on FM signal has the characteristics of low SCR and narrow band. Only the receiver with large dynamic range can receive the weak echo signal.
基于FM信号的无源雷达目标回波信号信杂比低，频带窄，只有开发大动态范围的接收机才有可能接收到微弱的目标散射信号。
This paper realize the radar echo signal analysis and modeling from three aspects: contain the target echo, sea clutter, rain clutter and noise.
着重从目标回波、海杂波、噪声三个方面对雷达回波信号进行了分析和建模。
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。
The inverse synthetic aperture radar (ISAR) echo signal model of fast-moving target and the effect of fast-moving character on ISAR signal processing are analyzed.
分析了高速运动目标的逆合成孔径雷达（ISAR）回波信号模型和高速运动对ISAR信号处理的影响。
Relationship between the target scattering function and the echo signal is deduced to hold as a Fourier transform pair by analyzing the texture of echo signal for a passive radar imaging system;
首先分析了无源雷达成像系统的目标回波形式，得到了目标散射分布函数和雷达接收信号之间的傅里叶变换对关系；
Motion compensation for passive radar imaging is discussed in the paper and echo-signal models for target are given.
讨论了无源雷达成像的平动补偿，建立目标回波模型，利用相邻回波包络的相关性进行运动补偿。
The realized SAR echo signal simulator based on point target and simple distributed target now, however, its application scopes is very limited, and requires further study and more research.
虽然目前已有基于点目标和简单分布目标的回波模拟器系统，然而其应用领域非常有限，尚待进一步研究和完善。
The realized SAR echo signal simulator based on point target and simple distributed target now, however, its application scopes is very limited, and requires further study and more research.
虽然目前已有基于点目标和简单分布目标的回波模拟器系统，然而其应用领域非常有限，尚待进一步研究和完善。
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