That's key to detecting precession, because during each eclipse astronomers can determine the precise angle of the radio signal and therefore the pulsar's wobble over time.
Doppler radio Direction Finder is a technology that measures the Angle between radio transmitter and the radio using Doppler effect (Doppler principle).
多普勒无线电测向技术即为利用多普勒效应测定无线电发射设备与接收设备之间夹角的一种技术。
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This paper discusses the creation of radio literary works from the Angle of the choice of works, artistic style of language and the application of music.