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 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，由于对目标速度测量精度的要求很高，因此目标多普勒频率测量电路的设计也具有比较重要的地位。
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.
讨论了利用GPS多普勒频移观测值确定运动载体速度的基本原理，估计出采用这一方法可以达到的精度。
The basic principle for determining the speed of moving vehicles with GPS Doppler observed values is discussed, and the available accuracy with this method is presented.
本文就半导体激光小型多普勒干涉系统的研制及作为速度测量系统的测量精度和实用可行性进行了探讨。
This paper presents a compact laser diode doppler interference system used in velocity measurement. The velocity measurement accuracy and application of the system are discussed.
介绍了采用数字方法实现雷达窄带多普勒滤波器组的基本原理，给出了硬件电路的设计方法，并对滤波器精度进行了分析。
This article introduces the basic principle of radar narrow band doppler filters, puts up the designing method of the hardware circuit and analyzes the filter accuracy.
毫米波导引头具有导引精度高、抗干扰力强、多普勒分辨率高、等离子体穿透能力强等特点。
Millimeter wave target seeker has features such as high-accuracy, powerful anti-interference capability, high Doppler resolution and large plasma penetrated ability.
对于使用高脉冲重复频率的主动多普勒雷达导引头，连续波近似法不仅计算相对简单，而且可以给出较高的计算精度。
For a Doppler radar homing seeker with high pulse repetition frequency, the continuous wave approximation is not only simple, but also has a high calculation accuracy.
多普勒频率的测频精度愈高，反演口径分布的误差愈小。
The higher accuracy of measuring the Doppler frequencies, the less error of the aperture distribution.
在无参考点海洋sar定位方法中，多普勒中心频率估计对定位精度有着重要的影响。
Estimation of Doppler central frequency has an important effect to accuracy of fixed position in the fixing approach with no reference points for ocean SAR.
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。
This paper researches several comb waveforms on their transmitting efficiencies, resolutions in range and reverberation suppression properties based on Doppler shift.
W波段连续波相参多普勒雷达具有测速精度高的优点，广泛应用于多种测速场合。
The W-band coherent Doppler radar has high precision. It is widely used in speed measuring.
与早期雷达采用距离微分方法测速相比，基于脉冲多普勒理论的雷达测速技术具有实时性好、精度高等优点。
Comparing with the differential range method that early radar adoptive for measuring velocity, the radar, which based on Pulse-Doppler theory, has the better real time capability and high precision.
摘要 ：使用距离多普勒模型进行SAR影象几何校正时，卫星轨道误差、系统成像参数误差和DEM高程的误差会影响几何校正精度。
Abstract : When using the Range-Doppler model for SAR image geometric correction, the error of satellite orbit, imaging parameter and DEM elevation will affect the geometric correction accuracy.
激光多普勒测速以其高精度、使用方便而在速度测试领域得到广泛的应用。
Laser Doppler velocity is widely used in the measurement field of velocity for its high accuracy and easy-used property.
第六章主要对角度变化率和离心加速度参数的获取技术进行了研究，提出了几种高精度测量脉冲序列多普勒频率变化率的方法。
The sixth chapter studies the techniques in measuring the bearings changing rate and centrifugal acceleration, and poses several algorithms of measuring pulse Doppler shift frequency changing rate.
多普勒中心估计精度的高低直接影响多普勒波束锐化(DBS)性能的优劣。
The precision of Doppler center estimation is of great importance to the performance of Doppler Beam Sharpening (DBS).
利用激光多普勒效应实现固体面内位移测量时，由于散射光的多普勒信号十分微弱，有时还出现淹没或不连续，影响位移测量精度。
In the displacement measurement system of scattering surface laser Doppler effect, the measuring accuracy is affected by the weakly Doppler signal that may be lost or discontinuous.
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。
The relative frequency and Doppler frequency rate estimation accuracy is high, and the process of solving the ambiguity is simple.
该方法适用于单星sar以及分布式sar高精度多普勒参数的估算。
This method is suitable for both single SAR and distributed SAR Doppler parameters precision calculations.
为了满足地震勘探高精度、高分辨力的需要，进一步研究了多普勒测量技术和弱信号检测技术。
To meet the seism detections require of high accuracy, high resolving power, the measurement technique of Laser Doppler and detection technique of faint signal are further researched.
多普勒法测量精度不高。
在多普勒调频斜率估计中，时频分析法比较直观，估计精度也不错，脱机处理中获得了广泛的应用，图像偏移法估计速度快，在运动补偿中得到了应用。
Image offset method that is also fast can be applied to motion compensation, time-frequency method is intuitionistic and have a better accurate, which is applied extensively on offline.
同时，此误差校正方法同样适合高精度激光多普勒扫描测量系统。
And the revising methods were also adapted to precise laser Doppler scanning measurement system.
文章改进了零多普勒时间的估计方法，提高了其估计精度，从而较好地实现了频率同步。
A more precise estimation method of the Zero Doppler Time has been improved, and the frequency synchronization is achieved.
本文介绍了对连续波雷达的多普勒频率信息，用自定位技术获得高精度的弹道位置参数的一种方法。
In this paper, a self-position technique is introduced to obtain high accuracy position parameters from doppler frequency.
目前，只有直接探测多普勒测风激光雷达能够对全球范围的三维风场进行高精度、高时空分辨率的探测。
Currently, only direct detection Doppler lidar is able to directly measure three-dimensional wind field with high accuracy, high temporal and spatial resolution in the global region.
实验结果表明，多普勒测速仪能够 有效地抑制惯导 误差随时间积累的缺点，提高了导航定位的精度。
The result of surface water experiment demonstrates that DVL can eliminate the accumulated errors of inertial navigation system and improve navigation accuracy.
在影响多普勒计程仪测速精度的多种因素中，以声速的影响为最大。
Among the factors which affect the accuracy of Doppler log, the speed of sound is the most important one.
利用GPS多普勒频移观测量可以获得高精度的速度测量结果。
The precise velocity can be derived with GPS Doppler measurements.
利用GPS多普勒频移观测量可以获得高精度的速度测量结果。
The precise velocity can be derived with GPS Doppler measurements.
应用推荐