The simulator can mainly simulate the doppler frequency and range.
模拟器主要完成多普勒频率模拟和距离模拟。
Then after amplitude limiting, to be preamplified, demodulated, bandpass filtered, the doppler frequency shift signal is extracted.
经过限幅保护，接收放大，检波和带通滤波后，将多普勒频移信号提取出来。
The design of target doppler frequency measurement circuit is very important in phase coded MMW radar system because of the high measurement precision requirement of target speed.
在某相位编码毫米波雷达系统中，要求很高的目标速度测量精度，因而目标多普勒频率测量电路的设计比较重要。
The realization of location using the difference of doppler frequency is discussed, the formula for the location error is derived and its simplification form with data simulation is presented.
讨论了多普勒频率差定位技术的实现方法，推导了定位误差公式，并给出了实际使用时的简化而直观的形式，同时进行了数值模拟。
LEO satellite communication system has the properties of larger power dynamic range, larger and faster changed doppler frequency shift and rapid fluctuation compared to ordinary communication system.
相对于一般的通信系统而言，低轨卫星通信系统具有信号动态范围大，多普勒频移大且变化速度快，信道起伏剧烈等特点。
The Doppler frequency can be obtained as a heterodyne or beat effect.
由于外差或频差效应，能够得到多普勒频率。
A method of removing the estimating outliers of Doppler frequency is studied.
研究去除多普勒频率估计野值点的方法。
Doppler frequency drift and timing error were considered in state transform equations.
状态方程综合考虑了多普勒频移、定时误差。
The invention discloses a Doppler frequency searching method in a GNSS receiver and a correlator thereof.
本发明揭示了一种在GNSS接收器中搜寻多普勒频率的方法及相应的相关器。
The properties of Doppler centroid frequency and Doppler frequency rate of GEO SAR is discussed in detail.
探讨了同步轨道SAR多普勒中心频率和调频率的特征。
But if the Doppler frequency offset exceed the capture range of PLL, the carrier synchronization will fail.
但是，一旦多普勒频移超出了锁相环的频率捕捉范围，就无法完成载频同步。
In satellite mobile communications, Doppler frequency offset is a negative factor that couldn't be neglected.
在卫星移动通信中，多普勒频偏是一个不能忽视的消极因素。
The maximum Doppler frequency shift is an important parameter which affects the performance of the OFDM system.
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 can be estimated more accurately over a wider range of Doppler spreads than prior art.
可以在比现有技术更宽的多普勒扩展范围上更精确地估算多普勒极限频率。
In this paper, the Doppler frequency and time-delay estimators of wideband echoes for LFM pulse radar are discussed.
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。
Besides amplitude, phase and Doppler frequency, polarimetric information is the fourth characteristic in the radar echo.
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。
In recent years, many Doppler frequency estimation algorithms have been studied for the above wireless mobile applications.
近年来，为了更好地为这些无线应用服务，人们提出了很多算法来估计最大多普勒频移。
Mapdrift algorithm is an autofocusing processing which can get correct Doppler frequency modulation slope in SAR processing.
在SAR成像中，MD算法是一种对多普勒调频斜率进行估计的自聚焦处理过程。
An estimation method of direction of arrival (DoA) and Doppler frequency for signals in the presence of array errors is proposed.
在均匀线阵存在误差的情况下，提出了一种信号波达方向和多普勒频率的估计方法。
The relative frequency and Doppler frequency rate estimation accuracy is high, and the process of solving the ambiguity is simple.
该算法具有相对频率估计精度高、解模糊过程简单、运算量小、多普勒频率变化率测量精度高等优点。
A new blind estimate of 2d Angle and Doppler frequency for fluctuating target signals was proposed with sensor gain uncertainties.
在各阵元增益幅度不一致的条件下，提出了一种起伏目标的二维方向角和多普勒频率盲估计的新方法。
The method in which coherent accumulation is carried out after the echo is compensated by a Doppler frequency shift is introduced.
提出了一种先对回波信号进行多普勒补偿后再进行相干积累的方法。
In the communication of multiplex system, the DS signal exists Doppler frequency shift for the high dynamic situation of aerocraft.
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。
A close-form range curvature factor is constructed through the correspondence of the instant Doppler frequency to the squint angles.
利用瞬时多普勒频率与波束斜视角的对应关系构造出一种具有闭合解的距离弯曲因子。
Doppler frequency shift observation of ionospheric high frequency echo is an important method for studying ionospheric disturbances.
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。
When the DPCA condition is not satisfied, the error of sampling position can be compensated by a linear phase in Doppler frequency domain.
在不满足DPCA条件时，采用在多普勒频域乘以线性相位的方法来实现平动补偿。
The Doppler frequency of signals was used to estimate the direction of arrival (DOA) of desired signal with unknown array response vector.
在未知阵列响应矢量的条件下，利用信号的多普勒信息，估计出期望信号的波达方向。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
无线环境中存在多径衰落、多谱勒频移和信道快速时变等许多不利因素。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
无线环境中存在多径衰落、多谱勒频移和信道快速时变等许多不利因素。
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