状态方程综合考虑了多普勒频移、定时误差。
Doppler frequency drift and timing error were considered in state transform equations.
此外，应用多普勒频移的方法，可以发现恒星的质量。
Furthermore, applying the Doppler shift method, one can find the mass of a star.
计算出了几种典型非静止轨道卫星信道的最大多普勒频移。
The maximum Doppler shift in some typical non-GEO satellite channels are figured out.
另外用户的速度方向和大小必须已知用来补偿多普勒频移计算。
Finally, the user velocity, both magnitude and direction, must be known and compensated-for in the position computation.
在复合系统通信中，飞行器的高动态使扩频信号存在多普勒频移。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
利用智利的天文望远镜，天文学家测量了三裂星云中气体的多普勒频移和速度。
By using telescopes in Chile, the astronomers measured Doppler shifts and thus velocities of gas in the Trifid.
在OFDM系统中，影响其性能的一个重要参数就是最大多普勒频移。
The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.
电离层高频反射回波的多普勒频移观测是研究电离层扰动的一个重要方法。
Doppler frequency shift observation of ionospheric high frequency echo is an important method for studying ionospheric disturbances.
估计最大多普勒频移或者是移动台的速度对于优化接收机的性能至关重要。
Estimation of the maximum Doppler spread or, equivalently, the speed of the mobile, is of an essential importance for the optimization of receiver algorithms.
多普勒频移补偿：大的多普勒频移会引起载波同步及伪码捕获性能的下降。
Doppler compensation techniques: the large Doppler frequency offset can case the performance degraded in PN and carrier synchronizing.
但两者都对载波频率偏移敏感，且在AWGN和多普勒频移环境下表现相当。
But both of them are sensitive to carrier frequency shift, further, they have comparative BER under AWGN and Doppler shift environment.
随后给出了一种以链路距离变化率作为相对速度来计算多普勒频移的新方法。
Then a new method of computing Doppler shift is presented, in which the variation of link length is regarded as the relative velocity between satellite and earth station.
进一步的分析显示，多普勒频移不能解释朝长波方向扫描的波长自扫描现象。
Furtheremore, the analysis indicates that the Doppler frequency shift cannot be Used to explain the wavelength self-scanning initially towards the longer wavelength.
针对P码多普勒频移大、周期长的特点，本文探讨了缩短载频搜索范围的方法。
According to P-code features of large Doppler frequency shift and long code period, the method that shortens the scope of carrier frequency search is studied.
论述了用原子滤波器的透射率廓线测量激光多普勒频移的直接检测方法和理论。
The theory and method of measuring moving target′s velocity using atomic transmission are described.
在水声通信中，由于发射和接收平台之间的相对运动，多普勒频移是无法避免的。
Doppler shift is unavoidable in underwater acoustic communications because of relative moving between the transmitter and the receiver.
雷达回波信号中，除幅度、相位和多普勒频移外，还存在第四特征——极化信息。
Besides amplitude, phase and Doppler frequency, polarimetric information is the fourth characteristic in the radar echo.
针对LF M脉冲雷达的宽带回波信号的多普勒频移和时延估计问题进行了研究。
In this paper, the Doppler frequency and time-delay estimators of wideband echoes for LFM pulse radar are discussed.
本文在瑞利衰落模型下，研究了高频电离层信道中多径时延与多普勒频移的随机特性。
In this paper, with Rayleigh fading the random characteristics of multipath time delay and Doppler shift in HF ionospheric channels is discussed.
从轨道方程出发，对影响卫星光链路接收机带宽的主要因素———多普勒频移进行了研究。
The Doppler frequency shift, the main factor restricting the bandwidth of receiver in inter satellite laser link, with orbit equations is calculated.
与普通的移动通信环境相比，高速移动环境最突出的问题是多普勒频移对通信产生的影响。
Compared with normal mobile communications environment, the most prominent problem of high mobility environment is the impact of Doppler shift on communication.
结果表明，多普勒频移对共振位置有精细的影响，并且拉比频率越大多普勒频移更加明显。
It is found that doppler-shift can influence the resonant position and Dopper-shift is more obvious if Rabi frequency is larger.
报道了在慢波场中原子波谱多普勒频移随微波慢波系数的变化，并讨论产生这种现象的原因。
We report the Doppler shift of Na spectroscopy changing with the slow wave factor in a slow wave microwave field the reason of the phenomenon is discussed.
在此基础上得到电离层反射信号的多普勒频移公式以及穿过电离层的信号的多普勒频移公式。
The formulas of Doppler shift due to the reflected signal and that travelling through the ionosphere are thus derived.
由多径色散及多普勒频移造成的频率—时间选择性衰落是城市移动无线信道的一个重要特性。
The frequency time selective fading resulted from multipath dispersion and Doppler frequency shift is an important characteristic of urban mobile radio channel.
利用多普勒频移原理实现了运动目标速度测量，利用脉冲回波测距原理实现运动目标距离测量。
The speed of moving-target was measured based on the principle of PD frequency shift, and the range of moving-target on the pulse-echo principle.
信号的任何多普勒频移无论如何都不会移出这个频带，而且也肯定会是整个信号的一个组成部分。
Any Doppler drift in the signal would fall within this wide band anyway and will form part of the total signal.
针对衰落信道中广泛存在的多普勒频移现象，本文提出了一种MPSK信号数字化识别解调的方法。
A new method for digital identification and demodulation of MPSK signals is presented under the condition of the Doppler frequency shift of channel attenuation.
本文分析了电离层的变化和运动引起多普勒频移的物理机制，假定了一个包含多种因素的电离层模型。
The mechanism of Doppler frequency shifts resulted from variations and movement of ionosphere is analysed, and a general model for the ionosphere involving several factors is assumed.
本文分析了电离层的变化和运动引起多普勒频移的物理机制，假定了一个包含多种因素的电离层模型。
The mechanism of Doppler frequency shifts resulted from variations and movement of ionosphere is analysed, and a general model for the ionosphere involving several factors is assumed.
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