1) orthogonal frequency division
正交频率分集
1.
Target full polarization instantaneous measurement based on orthogonal frequency division
基于正交频率分集的目标全极化瞬时测量方法
2.
Based on orthogonal frequency division and full-polarization instantaneous measuring method,a new waveform vector was designed to get full-polarization information simultaneously under wideband condition.
雷达目标宽带全极化测量在雷达成像、目标识别等领域有着重要应用,为此,基于正交频率分集思想,设计了一种用于宽带全极化瞬时测量的矢量信号波形;给出发射信号模型和回波信号模型,利用该波形的单个脉冲回波,可以获取测量带宽内多频点全极化数据,再经逆离散傅立叶变换后可以得到目标的全极化一维距离像;最后,用仿真数据和实测数据进行仿真实验,验证了该方法的有效性。
2) frequency diversity QAM (FDQAM)
频率分集正交调幅
4) orthogonal frequency division
正交频分
1.
In this paper, the cross-ambiguity of OFD-LFM (orthogonal frequency division linear frequency modulation)signals is analyzed.
该文分析了正交频分线性调频(OFD-LFM)信号的互模糊函数,对互相关峰值旁瓣电平出现的位置及幅度大小进行了分析,给出了最小化OFD-LFM信号间互相关影响的参数之间的关系。
5) 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。
6) frequency diversity
[电]频率分集
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