pilot frequency的用法和樣例：
例句
- Along with the estimation scheme, pilot tone placement is studied.
此外，還研究了所提演算法中的導頻分佈問題。 - It is better to group pilot tones together into clumps that are equispaced in the frequency domain.
可以證明，在快時變環境下，分組且每組等間隔分佈於頻域上的導頻序列有著更好的系統性能。 - Once your plane takes off, your pilot activates a transponder device inside the aircraft.
飛機離開地面后，飛行員會開啟機內的自動異頻雷達收發機。
