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- 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。
- 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。
- His words aroused no echo in their hearts. 他的话未能在他们心中引起共鸣。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- It prevents the other end from hearing an echo of themselves. 该功能可以防止远端听到他们的回声。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位,等于每秒一周
- The daily echo have a readership of over ten millions. 《每日回声报》拥有读者逾一千万人。
- Her softening voice chimed in beautifully with the echo of the music. 她柔和的嗓音与乐曲的回声美妙地融为一体。
- The young man is only an echo of his mother's opinions. 那个年轻人只不过是他母亲意见的附和者。
- The Daily Echo has a readership of over ten million. 《每日回声报》拥有读者逾一千万人。
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- The return of the echo will elapse longer time. 回声返回所耗的时间越长了。
- She shouted on the mountaintop and listened for the echo. 她在山顶上大声喊着,然后聆听着回声。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- A circuit that needs to use an echo trap if the circuit is used alone. 一种电路,如果单独使用它,则需要使用回波抑制设备。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- A device used underwater to produce pulses of sound, as for an echo sounder. 声脉冲发送器置于水下产生声脉冲的装置,如回音器中的装置
- An echo was returned from the round wall. 从圆形的墙壁反射出回声。
- The echo rebounded from the round wall. 回声从圆形的墙壁上传回。