Doppler shift

基本解釋

Imagine now you can make the Doppler shift measurements of both stars.
假設(shè)現(xiàn)在你可以,對雙星進行，多普勒頓移的測量。
And so you get all this useful information in astronomy by making the Doppler shift measurements of binary systems.
你們可以得到所有,天文學(xué)中的有用信息,只要對雙星系統(tǒng)進行,多普勒頓移。
If you have a binary system whereby both stars are visible so you get the spectrum of both stars, then you see the Doppler shift of both stars in the spectrum.
若存在一個雙星系統(tǒng),兩顆恒星均看不見,你能得到雙星的光譜，然后在光譜中看到,雙星的多普勒頓移。

There is a doppler shift when the recipient is moving and this can be a significant issue.
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This is due to a Doppler shift—the same phenomenon that causes the pitch of an ambulance's siren to seem to vary as it passes a stationary listener.
ECONOMIST: Extrasolar planets
And since a moving object causes a tiny change (known as a Doppler shift) in the frequency of the reflected signal, Silent Sentry can also calculate how fast it is moving.
ECONOMIST: Remote sensing

多普勒頻移
Simulation result shows that the system has a good performance in multi-path fading and Doppler shift channel.
仿真結(jié)果表明，這個系統(tǒng)在同時存在多徑衰落和多普勒頻移的惡劣信道環(huán)境下仍有較好的性能。
多普勒效應(yīng)
多普勒頻率
Due to the severe Doppler shift,the application of OFDM in underwater acoustic channel is limited.
水聲通信中存在著嚴(yán)重的多普勒頻率偏移,限制了OFDM技術(shù)在水下的應(yīng)用。
都卜勒位移
多卜勒移位