1) Large Doppler shift
大Doppler频移
2) 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。
3) a generalized Doppler-shift relation
广义Doppler频移关系
1.
Both a generalized Doppler-shift relation and a generalized dispersion relation are first found,and the generalized intrinsic frequency with variety in dual values is directly correlated with the uniform currents.
进而从中发现广义Doppler频移关系和广义色散关系。
4) 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。
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：多普勒频移
多普勒频移
物理学术语。又称“多普勒频率”。由多普勒效应引起发射频率与运动目标反射波或散射波信号频率之间的频差。反射体引起的多普勒频移(fd)与发射频率(fs)的关系式为fd=(2Vcosθ)·fs，C为声速，V为反射体的运动速度，θ为反射体运动方向与声束指向之间的夹角。取超声诊断中的典型数据可算得血流。胎心检测中的多普勒频移(fd)均在声频范围之内，因此这类诊断仪器均可采用扬声器来监听。
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