echo frequency

基本解釋

The new methods can be used in both detection of FMCW echo and frequency estimation of correlative pulse train.
這兩種方法既可用于多段線性調(diào)頻連續(xù)波探測回波的積累檢測，也可用于多個相參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.
介紹了多卜勒導(dǎo)航雷達的基本工作原理，推導(dǎo)了回波信號多卜勒頻移與系統(tǒng)其它參量間的關(guān)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.
在討論回波信號頻譜特性的基礎(chǔ)上，介紹了回波信號的產(chǎn)生原理及自動檢測設(shè)備的硬件組成。