1) frequency sets
频率集
1.
This paper describes the relationship of frequency hopping speed in narrowband HF DPH with the minimum frequency interval,frequency sets\' hopping number and the minimum free distance,analyzes the data transmission rate of HF Narrowband DFH Burst Communication.
分析了窄带情况下差分跳频的跳速与最小频率间隔、跳频频率集点数、最小自由距之间的关系以及短波窄带差分跳频猝发通信的数传速率。
2) collecting frequency
收集频率
4) frequency collection
频率采集
1.
The multichannel frequency collection system based on VB and DLL;
基于VB和DLL技术的多通道频率采集系统
5) closely spaced frequencies
频率密集
1.
For a combined primary_secondary structure with closely spaced frequencies, it is proposed that a component_mode synthesis method combined with Kronecker algebra is an effective way in the non_stationary stochastic vibration analysis.
总结了非平稳随机地震反应分析的特点 ;针对频率密集主次复合结构体系 ,提出了主次子结构的截断模态综合分析方法 ;并在此基础上 ,利用Kronecker代数进行了非平稳随机地震反应分析 。
6) Frequency diversity
频率分集
1.
The design philosophy of the frequency diversity radar receiver is introduced in this pa- per.
介绍频率分集雷达接收机的设计原理，分析了频率分集增益与通道数的关系以及频率分集对检测性能的改善，阐述了与频率分集相关的硬件设计问题。
2.
The simulation result shows that the interleaved OFDMA can reap more frequency diversity than the sub-band based OFDMA in frequency selective fading channels.
文中对OFDMA系统中的子载波分配方法进行了研究,介绍了两种子载波分配方法的原理,对两种子载波分配方法进行了仿真,结果显示在频率选择性衰落信道中交织分配的OFDMA系统要比块分配的OFDMA系统获得更多的频率分集。
3.
An additional frequency diversity gain can be obtained with OFDM-CDM by spreading each data symbol over different subcarriers.
OFDM-CDM系统将信号扩展到不同的子载波上,可以达到很好的频率分集的效果。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
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