1) Harmonic frequency synthesizer
谐波频率合成器
2) harmonic / direct digital synthesis
谐波/直接数字频率合成
3) Microwave synthesizer
微波频率合成器
4) harmonic frequencies
谐波频率
1.
Aim To extract harmonic frequencies of helicopter acoustic signal as features for hel icopter identification.
目的提取直升机声信号谐波频率作为特征用以识别直升机。
2.
Methods Based on the analysis of spectral characteristics of a helicopter acoustic signal, a method of subspace decomposition was proposed for the purpose of suppressing noise interference and increasing the ability of recognizing target and multiple signal classification(MUSIC), an algorithm of harmonic retrieval, was introduced to extract harmonic frequencies from acoustic signals.
方法 通过对直升机声信号频域特性分析 ,采用基于子空间分解的多重信号分类法 ( MUSIC)算法提取信号谐波频率作为目标特征 ,利用子空间分解将观测数据分解为信号子空间与噪声子空间的特点 ,抑制噪声干扰 ,提高识别能力 。
5) Harmonic frequency
谐波频率
1.
Sign correlation function based modified music algorithm for harmonic frequency estimation in power system;
用于电力系统谐波频率高分辨估计的MUSIC算法
6) frequency synthesizer
频率合成器
1.
The application of DDS chip in the frequency-hop frequency synthesizer;
DDS在跳频频率合成器中的应用
2.
The method of parameter design to realize the frequency synthesizer by Delphi;
用DELPHI编程实现频率合成器参数设计的方法
3.
Design of a high frequency and low phase noise frequency synthesizer;
一种高频低相噪频率合成器的设计
补充资料：变换器式频率表(见交换器式电表)
变换器式频率表(见交换器式电表)
transducer type frequency meter
曰‘口，”IuullqISn}P旧iUbloo变换器式颇率表meter)(transdueer tyPe见变换器式电表。frequeney
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条