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[求助]
将一段中文翻译成英语 急急急！！！
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中文： 受到发射功率的限制和墙体衰减的影响，接收到的目标回波信号非常微弱，几乎被完全淹没在背景杂波和噪声之中。为了增加回波信号的平均功率，可通过增加脉冲重复频率或发射均匀脉冲串等方法来实现。然而，增加脉冲重复频率会减小无模糊的探测距离。此外，如果发射均匀间隔的脉冲串，能量会集中在离散的谐振频率处，在整个带宽范围内，这会降低雷达的距离分辨率。如果脉冲序列被随机信号调制，所产生的类似噪声的信号作为探测信号可以解决上诉的问题。 我的翻译： Limited by the transmit power and wall attenuation, the echo signal from the target is very weak and submerged in the background clutter and noise. Increasing the pulse repetition frequency or transmitting a uniformly spaced pulse train can enhance the power of the echo signal. However, the increase of the pulse repetition frequency will cause the decrease of the unambiguous detection distance. In addition, if a uniformly spaced pulse train were transmitted, the energy would be concentrated at discrete harmonic frequencies within the total bandwidth, which will reduce the distance resolution of the radar. If the pulse trains are modulated by the random signal, the generated noise-like signal as the probe signal can solve the above problems |
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沧海逍遥: 金币+50, 翻译EPI+1, ★★★★★最佳答案 2015-06-12 08:32:22
沧海逍遥: 金币+50, 翻译EPI+1, ★★★★★最佳答案 2015-06-12 08:32:22
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The echo signal from the target is very weak and submerged in the background clutter and noise due to the transmit power limit and wall attenuation. The power of the echo signal can be enhanced by increasing pulse repetition frequency or transmitting a uniformly spaced pulse train. However, increase in pulse repetition frequency will cause a decrease in the unambiguous detection distance. In addition, if a uniformly spaced pulse train is transmitted, the energy will be concentrated at discrete harmonic frequencies within the total bandwidth, which will reduce the distance resolution of the radar. If the pulse trains are modulated by the random signal, the generated noise-like signal as the probe signal can solve the above mentioned problems. 难道后面有句话是用虚拟语气？如果用则后面的都用，其实不需要（我给改了） |
2楼2015-06-11 11:06:45
