本方法对目标回波信号采用了相干视频模拟法，在视频上模拟目标回波的多普勒频率。
In the method, the target reflected signal is generated by the way of coherent video simulation and the Doppler frequency of target is simulated on video.
提出了一种先对回波信号进行多普勒补偿后再进行相干积累的方法。
The method in which coherent accumulation is carried out after the echo is compensated by a Doppler frequency shift is introduced.
近20年来，超声成像设备在电脑超声成像技术，谐波成像技术，相干处理成像技术，多普勒频移成像技术，回波频谱分析技术等方面取得了重大进展。
In the past 20 years, the imaging technique of ultrasound imaging equipment has made much progress in harmonic imaging, coherent imaging, Doppler imaging and frequency spectra analysis.
通常非相干的常规天气雷达的应用仅仅是通过雷达回波强度的探测来提供天气目标物的位置和其反射率的信息。
Usually, conventional incoherent weather radar is used to provide only the information on the position of a weather target and its radar reflectivity by detecting echo intensity.
在合成孔径雷达（SAR） 中，雷达与目标之间相对运动的精确知识是相干处理回波形成高方位分辨率图像的基础。
The problems about the detection of moving objects and observation by the synthetic aperture radars(SAR) are described in this paper.
针对目标回波检测，本文采用了长时间相干积累的方法，仿真结果表明该方法提高了目标回波积累峰值；
Aiming at target echo signals detection, long-time coherent accumulation processing is adopted. Simulation results show that the method improves the power of target echo signals.
针对目标回波检测，本文采用了长时间相干积累的方法，仿真结果表明该方法提高了目标回波积累峰值；
Aiming at target echo signals detection, long-time coherent accumulation processing is adopted. Simulation results show that the method improves the power of target echo signals.
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