多普勒频移,doppler shift
1)doppler shift多普勒频移
1.Detection of Doppler shift based on excitation bifurcation of duffing oscillator;达芬振子激励分叉在多普勒频移检测中的应用
2.Acquisition method of the Doppler shift based on the Costas loop;基于科斯塔斯环的多普勒频移捕获方法
3.Research on the method of elimination of the Doppler shift in the TDRSS;TDRSS中多普勒频移消除方法的研究
英文短句/例句
1.satellite Doppler shift measurement卫星多普勒频移测量
2.Doppler-shift ocean-current meter多普勒频移海流测速仪
3.Mobile Communication Doppler Frequency Shift and High-speed Railway Coverage Technology移动通信多普勒频移与高铁覆盖技术
4.Variations of Doppler Shift and Spread for HF One-hop Skywave短波─跳天波多普勒频移和展宽的变化
5.ANALYSIS OF DOPPLER FREQUENCY DRIFT FOR MEASUREMENT OF FISHERIES UNDERWATER ACOUSTICS对渔业水声测量中多普勒频移的分析
6.Research on Doppler Frequency Offset in GSM-R Based on Laurent Decomposition;基于Laurent分解的GSM-R多普勒频移研究
7.Demodulate Method of BPSK Signal With Doppler Shift一种含多普勒频移BPSK信号的解调方法
8.Effect of Doppler Frequency Shift on Linear Frequency Modulation Signal Pulse Compression多普勒频移对线性调频信号脉冲压缩的影响
9.A General Formula of Dopper Shift from 4-Dimensional Wavevector Transformation用四维波矢量变换导出多普勒频移普遍公式
10.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。
11.The infection of Dopper-shift on steady-state populations of a moving three-level ladder-type atom多普勒频移对运动三能级原子稳态布居的影响
12.Restraint Model Based on Cyclic-correlation for Doppler in the Multiplex System;基于循环相关的复合系统多普勒频移抑制模型
13.Research on Capture and Compensation of Doppler Shift in TDRSS;TDRSS中多普勒频移估计和补偿方法的研究
14.Design and Simulation of Doppler Value-based K Hop Clustering Algorithm基于多普勒频移的k跳分簇算法设计与仿真
15.Target speed vector estimation based on bistatic Doppler shift基于多普勒频移的双基地声纳目标速度测量
16.A Maximum Doppler Frequency Estimation Algorithm in OFDM System Based on Transform Field基于变换域的OFDM系统最大多普勒频移估计算法
17.Extended Kalman Filter Method for High Dynamic Doppler Frequency Shift Estimation基于扩展卡尔曼滤波的高动态多普勒频移估计
18.Analysis of Doppler Shift Effect on Channel Capacity of CDMA System多普勒频移对CDMA系统信道容量影响的分析
相关短句/例句
Doppler frequency shift多普勒频移
1.Doppler frequency shift rapid acquisition and tracking for GMSK signals;GMSK信号的多普勒频移快捕和跟踪
2.Simulation ofDoppler frequency shift fora moving target and ground clutter;运动目标回波与地表杂波的多普勒频移的仿真
3.TheDoppler frequency shift of a moving ladder-type three level atom in broad-band squeezed vacuum;宽带压缩真空下运动梯型三能级原子的多普勒频移
3)Doppler frequency多普勒频移
1.Doppler frequency estimation of radar signal based on cyclic cross-correlation amplitude;基于循环互相关的窄带回波多普勒频移估计
2.By calculating the auto-correlation function of cycle preamble of OFDM symbol, the maximum value ofDoppler frequency excursion is obtained.为了估计移动正交频分复用(OFDM)系统中衰落信道下的多普勒干扰,提出了利用OFDM符号的循环前缀检测最大多普勒频移的方法。
3.In this paper, theDoppler frequency and time-delay estimators of wideband echoes for LFM pulse radar are discussed.针对LFM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。
4)Doppler frequency offset多普勒频移
1.The high velocity of the aircraft introduces severeDoppler frequency offset into data transmission equipment,so a synchronization approach that can immunize airborne data transmission equipment against frequency offset is very important.机载数传设备的高速运动会带来较大的多普勒频移,设计一种不受频偏影响的同步解决方案对数传性能非常重要;突发方式的数据传输也给数传设备的接收同步带来了难度。
2.Orthogonal frequency division multiplexing (OFDM) will be widely used in aviation mobile communications for its own advantages,but the complex channel environment and the inter-carriers interference (ICI) caused byDoppler frequency offset will do harm to its performance.正交频分复用(OFDM)由于其自身的技术优势使其在未来的航空移动通信中将占有重要地位,但航空移动通信中时变的信道环境和多普勒频移造成的严重的子载波之间干扰(ICI),使OFDM在航空移动通信中应用面临着困难。
3.Its basic theory lies in the estimation of theDoppler frequency offset.声学多普勒流速剖面仪(ADCP)[1]技术是目前观测海流剖面的最有效方法,其基本原理是测定声波入射到海水中微颗粒后向散射造成的多普勒频移。
5)Doppler frequency-shift多普勒频移
1.This paper introduces the methods of setting the jamming power, azimuth jam-delay, distance jam-delay andDoppler frequency-shift in the process of jamming the general radar.文中介绍了对常规雷达进行航迹欺骗时,干扰功率、角度干扰时延、距离干扰时延和多普勒频移等干扰参数的设置方法,给出了相关公式。
2.In the satellite navigation and positioning system,Doppler frequency-shift is the key problems that degrade the performance of satellite receiver.为了克服多普勒频率偏移的影响,提高接收机的GPS信号捕获速度,对多普勒频移估计算法进行了研究。
3.The production ofDoppler frequency-shift is analyzed under the high dynamic condition.文章分析了动态环境下多普勒频移的产生,研究了多普勒频移的估算方法并建立了数学模型,在此基础上提出了一种运用DSP结合专用的DDS芯片AD9954模拟多普勒频移的方案。
6)Doppler shift多普勒频移，多普勒位移
延伸阅读
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。
