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- satellite Doppler shift measurement 卫星多变勒(频移)测量
- This is found by observing the doppler shift in the frequency of the radio signals broadcast from the satellite. 这是通过观测卫星所发射的无线电信号频率中多普勒偏移来确定的。
- The cosmological redshift is not a normal Doppler shift. 宇宙学的红移并不是平常的都卜勒偏移。
- In Doppler effect,the generation of Doppler shift has smoothing with wave source and relative motive case of the observer. Based on these,we discuss the application of Doppler effect in satellite orientation,medical diagnosis and aerological sounding. 在多普勒效应中有多普勒频移产生;并且与波源和观测者的相对运动情况有关;以此为基础讨论了多普勒效应在卫星定位、医学诊断、气象探测中的应用.
- Doppler Shift in satellite communication should not be ignored for the satellites with relative motion. 在卫星通信过程中,对具有相对运动的卫星,星间链路的多普勒频移是不能忽视的。
- The analysis and simulation shows that this radar system has higher range resolution and insensitivity to Doppler shift, etc. 分析与仿真结果表明，这种雷达系统具有距离分辨率高、对多普勒频移不敏感等特点。
- For an in-depth search, even a small change in sky location makes the Doppler shift different enough to completely wash out any signal if done wrong. 对于深入的研究，即使是天空中位置的小小变换，相应的多普勒偏移也是不同的，如果处理不对，什么有用的信号都观测不到。
- Abstract The formula of the second order Doppler shift of simple cubic monatomic nanocrystalline particle is reduced by means of the Green's function. 摘要 应用格林函数理论 ,推导了简立方单原子纳米晶体颗粒的二次多普勒移动公式。
- The system performances of QAM and ARDPM are compared by calculating the error bound of two systems with diverse Doppler shift over fading channel. 在多谱勒频移较小时,ARDPM系统的性能优于QAM,但是随着多谱勒频移的增大,ARDPM系统的性能将迅速恶化,此时QAM系统的性能将优于ARDPM。
- However, in ionogram mode, though Digisonde works with many sounding frequencies, the resolution of Doppler shift is too low to detect ionospheric disturbances precisely. 而在频高图模式下;虽然工作的频点多;能够获得电子浓度的高度剖面的信息;但探测的多普勒频移的分辨率低;无法用来精确检测电离层扰动.
- This paper researches several comb waveforms on their transmitting efficiencies , resolutions in range and reverberation suppression properties based on Doppler shift . 研究了若干种主动声纳梳状谱信号的发射效率、测量精度以及基于多普勒的抗混响性能。
- satellite Doppler navigation system 人卫多普勒导航系统
- The data analysis has to compensate for the Doppler shift to make any signal as sinusoidal as possible, which helps pull it out of the noise (with something based on a Fourier transform). 数据分析中比较对多普勒偏移进行补偿以使信号尽可能地接近正弦曲线，以方便从噪音中提取真正的信号（通过傅立叶变换）。
- Those complicated Doppler shifts are where the angular resolution comes from. 有了这些复杂的多普勒偏移，就有了角分辨率的问题。
- Authorized Bandwidth The necessary bandwidth required for transmission and reception of intelligence. This definition does not include allowance for transmitter drift or Doppler shift. 授权带宽智能传输和接收所需的带宽。该定义不包括允许发射机漂移或多普勒漂移。
- In this paper the Doppler shift formula is derived from Galileo transformation and lorentz transformation (the transverse Doppler shift formula included) and the difference between the Doppler effect in sound and the Doppler effect in light is discussed. 由伽利略变换和洛仑兹变换导出了多普勒频移公式(包括横向多普勒频移公式)。 讨论了声学多普勒效应和光学多普勒效应的异同。
- The system of the solar tower and two-channel solar magnetograph at the Crimean Observatory in USSR is introduced in this paper. The system is used to study solar oscillations by means of the spctral Doppler shift method. 本文介绍了用光谱Doppler位移方法研究太阳全球振动的苏联克里米亚天文台太阳塔望远镜和双通道磁像仪系统。
- SOME DISCUSSION ON TWO-DIMENSIONAL SATELLITE DOPPLER POSITIONING 对卫星多普勒二维定位的一些讨论
- In this paper,the method for estimating valid almanac for the GPS satellites is introduced,and for the r eceived GPS signals how the Doppler shift components impact the satellites signa ls acquisition time are analyzed. 本文主要讨论了GPS星有效历书的推算和接收机接收到的GPS信号的载波多普勒频移各组成部分对接收机的星捕获时间的影响 .
- Present a variety of unusual electromagnetic and optical properties, such as reversed Doppler shift, Cherenkov radiation, Goos-Hanchen shift, negative refraction effect and perfect lens. 满足左手定则而得名。 左手材料中传播的相速度和群速度方向相反,因而表现出一系列奇异的电磁学特性,如反常Doppler效应、反常Cherenkov辐射、反常Goos-H(?)
