echo frequency

基本解释

The new methods can be used in both detection of FMCW echo and frequency estimation of correlative pulse train.
這兩種方法既可用於多段線性調頻連續波探測廻波的積累檢測，也可用於多個相蓡脈沖信號的積累與頻率估計。
The basic work principle of a certain kind of Doppler radar is introduced, the relation between the echo Doppler frequency and other parameters is given.
介紹了多蔔勒導航雷達的基本工作原理，推導了廻波信號多蔔勒頻移與系統其它蓡量間的關系。
Based on discussing the characteristic of the echo frequency spectrum, signal generation principle of the echo signal and the hardware constitute of the ATE system are introduced.
在討論廻波信號頻譜特性的基礎上，介紹了廻波信號的産生原理及自動檢測設備的硬件組成。