1) Doppler frequency
Doppler频率
1.
The prediction range for wireless channels is limited by the coherent time while the pilot symbols are limited by the Doppler frequency in channel prediction.
在窄带平坦衰落信道模型中,利用实际测量数据,该方法与自回归(AR)预测方法作了对比和验证,预测长度不受1/2波长的限制,需要的导频数量由环境中的主要静态散射物数量决定,与Doppler频率无关。
2) center Doppler frequency of clutter spectrum
杂波谱中心Doppler频率
3) doppler shift
Doppler频移
1.
It is discussed that one of the general relativistic effects in XNAV—gravitational and doppler shift in basis equation.
详细讨论了XNAV(X射线源自主导航)中的广义相对论效应之一：脉冲星发射与观测者接收到X射线的引力频移和Doppler频移。
2.
We induced,summarized the curve of Doppler shift during the sunrise time and preliminarily analyzed the basic characteristics of sunrise effect by Doppler detection as well as the rules of diurnal variation and seasonal variation.
根据对电离层进行HF-Doppler探测的整年资料,对每天日出期间的Doppler频移曲线进行了归纳、总结,初步分析了Doppler探测日出效应的基本特点以及日变化、季变化规律。
3.
A two demension Ohm heating theoretic model in magnetizing ionosphere and the ray-tracing model in the discrete ionosphere background are used to diagnose the characteristics of the Over-The-Horizon Radar(OTHR) wave quantitatively,which transmit through the heated region in ionophere(mainly about the doppler shift and the phase shift).
利用二维磁化电离层欧姆加热数值模型和离散电离层背景下的射线追踪模型,对穿过高频加热电离层区域的超视距雷达(OTHR)诊断电波的波特性(主要是doppler频移和相位偏移)进行定量的分析,得到了在加热开机2 min内的诊断电波doppler频移和相位偏移的模拟结果。
4) Large Doppler shift
大Doppler频移
5) Doppler shifts
Doppler频偏
1.
This method can search the code phase and estimate Doppler shifts simultaneously.
本文研究了一种基于部分相关FFT的直扩信号同步捕获算法,它通过部分相关器进行码相位捕获结合FFT进Doppler频偏估计,把码相位和DoppIer频偏的二维搜索简化为一维的码相位搜索。
6) Doppler spectrum density
Doppler频谱密度
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