Frequency Source [物] 频率源
constant-frequency source 固定频率震源
fixed-frequency source 固定率源 ; 固家影像转换放映机 ; 固定频率源
variable frequency source 变频电源
standard frequency source 标准频率源
pll frequency source 锁相频率源
dds frequency source 直接数字合成频率源
high-frequency source 高频信号源
Phase noise is a sort of random phase disturbance produced by the nonideality factors of frequency source. Its impact to OFDM includes common phase error (CPE)and inter carrier interference(ICI).
相位噪声是频率源非理想因素引入的一种随机相位干扰,对解调的OFDM信号产生两种影响:公共相位误差(CPE)和载波间干扰(ICI)。
参考来源 - OFDM系统中相位噪声的影响与补偿Then do a research of PLL frequency source on two key feature—phase noise and spurs.
然后详细分析了频率合成器两个关键指标,相噪和杂散的产生机理及特性。
参考来源 - Ku波段宽带低噪声雷达跳频源的研制·2,447,543篇论文数据，部分数据来源于NoteExpress
Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive-applied technique.
固定频率源可以在在通讯系统和雷达系统中作为本机振荡器，也可以作为数字电路的基准时钟信号，因此得到了广泛的应用。
Whatever it is radar, eccm equipment, communication equipment or instrument, frequency source with high stability is needed to guarantee the quality of carrier signal.
无论是雷达、电子对抗，还是通信、仪器设备等都需要高稳定度的频率源，以保证载波信号的质量。
Suspicious foreign exchange transaction refers to foreign exchange transaction with abnormal amount, frequency, source, direction, use or any other such nature.
可疑外汇资金交易，系指外汇交易的金额、频率、来源、流向和用途等有异常特征的交易行为。
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