根据距离方程和多普勒定位方程组推导了针对ECS成像算法的几何校正计算公式。
According to the range equation and Doppler positioning equation, geometric correction calculating expressions corresponding to ECS algorithm were derived.
在卫星导航定位系统中，多普勒频率偏移是影响接收机性能的关键因素之一。
In the satellite navigation and positioning system, Doppler shift is one of the key problems that may degrade the performance of the satellite receiver.
多普勒波束锐化成像技术(DBS)能为检测出的动目标定位提供参考，从而有效地实现精确打击。
Doppler beam sharpening (DBS) technique can provide reference for the location of the moving target detected to attack more accurately and effectively.
目的探讨组织多普勒对室性早搏定位诊断的价值。
Objective To investigate the value of tissue Doppler in position oriented diagnosis of VP.
所用方法包括彩色多普勒血流图和能量图，磁场空间定位自由扫查及透明成像技术。
The methods used included CDFI, color Doppler energy, electromagnetic positioning free hand scanning and transparent imaging technique.
结论彩色多普勒超声能够对隐睾进行详细的解剖定位，为临床选择治疗方案提供极有价值的信息。
Color Doppler Ultrasound can provide detailed anatomical positioning for cryptorchidism and provide valuable information for clinical treatment.
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.
至少一个接收传感器定位成接收所散射的能量从而生成范围选通多普勒信号。
At least one receiving transducer is positioned to receive scattered energy to generate a range gated Doppler signal.
结论彩色多普勒超声具有较高的定位、定性诊断的敏感性，具有极高的临床应用价值。
Conclusion Color Doppler ultrasound had a high sensitivity in position and qualitative analysis, with the high clinical value.
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。
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.
论文第二章介绍了利用相位差变化率和多普勒变化率的定位原理，并且通过系统可观测性分析证明了其与角度信息联合利用跟踪目标的可行性。
In chapter 2, the basic principle and observability for target location utilizing phase difference rate-of-change and Doppler rate-of-change information of emitter is discussed.
本文讨论了多普勒频率信息在辐射源无源定位和基于第三方辐射源无源定位中的应用。
In this paper, the applications of Doppler frequency information in the passive location of emitter source and the passive location of the third part transmitter have been discussed.
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.
本论文分析和比较了多种遥感图像的定位方法后，指出了距离—多普勒(R - D)定位原理作为SAR图像象素绝对定位模型的优势。
After comparison of several location methods of remote sensing image, Range-Doppler (R-D) theory is proved to have advantages as the footstone of pixel location model of SAR image.
本文选用多普勒频率变化率定位法作为海上无源探测系统的定位方法。
The paper selects the Doppler changing rate method in naval passive location system.
针对单星测向定位中干涉仪设备复杂、卫星姿态测量要求高等不足，提出了一种基于多普勒变化率的单星无源定位方法。
Due to the complexity of the interferometers and high requirement of satellite attitude, a method of passive localization based on Doppler rate-of-change of single satellite channel is presented.
利用捷联惯导(SINS)、GPS定位系统和多普勒计程仪(DVL)进行组合导航是水下运载器导航定位的有效方式。
It is an effective way in integrated navigation by using Strapdown Inertial navigation System (SINS), GPS and Doppler Velocity Log (DVL).
给出了SINS与全球卫星定位系统(GPS)、多普勒导航系统(DNS)组合导航系统的状态方程和误差分析，在给定条件下进行了仿真试验。
The state equation and error analysis of SINS combined with globe positioning system (GPS) and Doppler navigation system (DNS) were also presented.
为此，提出一种利用空频域信息的固定单站无源探测定位方法，利用波达方向、相位差变化率、载波频率及多普勒频率变化率实现对运动目标的无源定位。
Therefor, a single observer passive location method was proposed by using direction of arrival, phase difference rate-of-change, frequency and Doppler frequency rate-of-change in this paper.
目的探讨彩色多普勒超声定位技术在颅内胶质瘤手术中的应用价值。
Objective To explore the effects of color Doppler ultrasonography in microsurgeries for deep supratentorial glioma.
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.
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.
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