negative frequency modulation

基本解釋

The frequency modulation effects of positive (negative) dipole or unipole forcing source on LFO in the mid-high latitudes are difference.
正、負偶（單）極強迫源對中高緯大氣的低頻振蕩調(diào)制作用不同。
In addition, based on FFT and remainder algorithm, the modulation rate and initial frequency of sub-sampling UWB LFM signal are estimated unambiguously in negative SNR.
該方法通過FFT和余數(shù)定理解頻率模糊，解決了負信噪比條件下超寬帶線性調(diào)頻信號調(diào)制斜率和初始頻率的估計問題。
The frequency modulation effects of positive dipole (unipole) forcing source on LFO is stronger than negative dipole (unipole), and the wave oscillation quicken evidently.
正偶（單）極強迫源對大氣低頻振蕩的調(diào)制作用強于負偶（單）極，波動振蕩明顯加快。