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.
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。
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.
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。
Conclusions Color Doppler ultrasonography can raise the accuracy of diagnosis in the occlusive arterial diseases of lower extremity.
结论彩色多普勒超声能帮助提高下肢动脉闭塞性疾病的诊断准确性。
Objective to analyze the accuracy of the diagnosis of aortopulmonary septal defect (APSD) by Doppler echocardiography and improve the initial echocardiographic diagnosis.
目的分析多普勒超声心动图诊断主肺动脉间隔缺损的准确率，提高超声心动图检查对主肺动脉间隔缺损的首次检出率。
Objective: To analyze the accuracy of the diagnosis of complete transposition of great artery (C-TGA) by Doppler echocardiography and improve the initial echocardiographic diagnosis.
目的：分析多普勒超声心动图诊断完全性大动脉转位(C -TGA)的准确性，提高超声心动图的首次检出率。
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.
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。
Objective To evaluate the accuracy of detecting high degree stenosis of proximal or mid-left anterior descending coronary artery(LAD) by transthoracic Doppler echocardiography(TTDE).
目的评价经胸多普勒超声心动图技术（TTDE）检测冠状动脉左前降支近、中段高度狭窄的准确性。
Three-dimensional power Doppler ultrasound improves the diagnostic accuracy for ovarian cancer prediction.
三维能量多普勒超声的应用提高了卵巢癌诊断的准确度。
Objective to evaluate the accuracy and security of color-Doppler guided coarse needle bioptic histopathology in diagnosis of thyroid nodules.
目的评价彩超引导下甲状腺结节粗针穿刺组织学检查的准确性和安全性。
Objective To evaluate the feasibility and accuracy of color M-mode Doppler flow propagation velocity (FPV) in assessment of the severity of aortic regurgitation (AR).
目的观察m -型彩色多普勒超声测定主动脉瓣返流(AR)的血流传播速度(FPV)估测AR程度的可行性及准确性。
The higher accuracy of measuring the Doppler frequencies, the less error of the aperture distribution.
多普勒频率的测频精度愈高，反演口径分布的误差愈小。
Objective To assess the accuracy of Doppler audio-signal processing system(DASPS) in noninvasive automatic estimation of pulmonary vascular resistance (PVR).
目的评价多普勒超声音频处理系统（DASPS）自动定量估测肺血管阻力（PVR ）的准确性。
Objective To assess the accuracy of color Doppler ultrasonography in the diagnosis of atrial septal defect (ASD).
目的研究彩色多普勒超声诊断房间隔缺损(asd)的准确性。
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.
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。
Conclusion It has high accuracy for color Doppler ultrasound in diagnosis of retinal detachment and so can be helpful for predicting prognosis.
结论彩色多普勒用于视网膜脱离的诊断准确率高，可为临床提供有效的诊断依据，有利于判断预后。
The accuracy of diagnosis for thyroid adenoma and nodular goiter by color Doppler were 90% and 81% respectively.
彩色多谱勒对甲状腺腺瘤及结节性甲状腺肿的诊断正确率90%和81%。
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.
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。
Objective To evaluate the value and accuracy of M-mode color Doppler echocardiography for detecting left ventricular diastolic function in patients with cardiac disease.
目的探讨彩色M型彩色多普勒超声评价左心室舒张功能的价值及准确性。
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.
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。
Objective:In order to improve diagnosis accuracy for primary gallbladder cancer, Doppler flow spectrum parameters were observed and analysed within tumors and the gallbladder artery.
目的：提高对原发性胆囊癌的诊断准确率，观察和分析胆囊肿瘤和胆囊动脉的血流参数。
Objective to explore CR mammography, color Doppler ultrasonography and Aspiration biopsy cytology diagnose the cases of accuracy sensitivity specialization in patents with small breast carcinoma.
目的：探讨钼靶CR摄影、高频超声、针吸细胞学联合诊断小乳腺癌的准确率、灵敏度、特异度。
Results: The accurate rate of imaging with color Doppler ultrasound in diagnosis of breast cancer reached up to 85%, which combined with CDFI and CDE could furtherly improve the accuracy.
结果：彩色多普勒超声的声像图特征诊断乳腺癌的准确率，可达85%，结合C DFI及CDE进一步提高了其准确率。
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.
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。
Among the factors which affect the accuracy of Doppler log, the speed of sound is the most important one.
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。
Millimeter wave target seeker has features such as high-accuracy, powerful anti-interference capability, high Doppler resolution and large plasma penetrated ability.
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。
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。
Laser Doppler velocity is widely used in the measurement field of velocity for its high accuracy and easy-used property.
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。
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.
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。
Doppler measurement accuracy is not high.
多普勒法测量精度不高。
Objective: To evaluate the accuracy of two-dimensional and three-dimensional (3d) color Doppler echocardiography in cardiac stroke volume quantification.
目的：比较二维超声及三维彩色多普勒超声在心搏出量计算方面的准确性。
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