水下航行器的多普勒导航系统设计。
第一部分分析了调频连续波多普勒导航雷达存在低高度限制的原因。
The first part is the analysis of why the low altitude is limited in frequency modification continuous wave Doppler navigation radar.
根据所提供的某型号多普勒导航雷达维护检修的需求，本文讨论了如何研制一套针对此型雷达专用的地面测试系统。
According to the requirement of detecting one Doppler radar system, this article discussed how to develop a special ground testing system.
纯惯性导航或多普勒导航的一个共同缺点是：一般都具有随时问或距离增长的位置误差，这就需要有一个外基准系统。
A simple inertial or Doppler navigation has a common defect that position errors are always increasing with flight time or distance, therefore an external reference system is necessary.
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.
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.
通过对地面卫星信号覆盖区内的多普勒频率偏移及不确定性范围的计算，给出了卫星导航系统信号的多普勒频率偏移与接收机位置之间的关系。
By calculating the Doppler shift and its uncertainty in the signal covering area, the relation between Doppler shift and the position of the receiver is obtained.
多普勒计程仪是根据声波在水中的多普勒效应原理而制成的一种精密的测速和计算航程的仪器，它是船用导航设备的重要组成之一。
Doppler log is a precise instrument, which is used to measure ship velocity and calculate its voyage on the theory of Doppler Effect of sound wave in water.
（多普勒甚高频全向信标）是当今民航最为常用的通信导航设备之一，可以给民航飞行器提供角度信息。
DVOR (Doppler VHF omni-directional Range) is one of the equipments most commonly used in today's civil aviation communications and navigation. It provides the perspective information for the aircraft.
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).
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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