| 1. | Study of phased array doppler velocity measurement technique
相控阵多普勒测速技术研究 |
| 2. | Doppler velocity measurement of duplex ammunition
双头弹多普勒测速研究 |
| 3. | Twin - beam laser doppler velocity system
双光束激光多普勒测速系统 |
| 4. | The top image of doppler velocity indicates opposing winds exceeding 90 kilometres per hour , affecting an area one kilometre across over the eastern part of chek lap kok inset
上图显示多普勒风速，可见在机场东面横跨一公里的范围内出现相反的方向，速度达每小时90公里小图。 |
| 5. | The top image of doppler velocity indicates opposing winds exceeding 90 kilometres per hour , affecting an area one kilometre across over the eastern part of chek lap kok ( inset )
上图显示多普勒风速，可见在机场东面横跨一公里的范围内出现相反的方向，速度达每小时90公里(小图) 。 |
| 6. | Measuring velocity precision is very important . in this thesis , the author researches on the location precision of doppler velocity log and compass , the precision of velocity precision of doppler velocity log
本论文就是针对这两方面而做的，主要围绕着辅助导航系统的定位精度和如何减小多普勒计程仪的测速误差进行的。 |
| 7. | Unmanned underwater vehicle is a useful vehicle , which must be a high accurate and reliable navigation system . doppler velocity log and compass are the assistant navigation system of uuv . researching on their location precision is very necessary
多普勒和罗经辅助导航系统作为战时的备用系统，研究其导航定位的精度是不可缺少的，而作为组合导航系统和辅助导航系统组成部分的多普勒计程仪，其测速精度就异常重要。 |
| 8. | The main tasks of this thesis are : discussing the dead - reckoning theory of doppler velocity log and compass , decreasing location error methods , emulating several ship tracks ; discussing several aspects influencing the velocity precision of doppler velocity log ; in a pool trial , processing the trial data and achieving some conclusions
本论文主要研究工作包括：对罗经和多普勒计程仪推算辅助导航系统的工作原理，及减小定位误差的两种方法和几种轨迹进行了研究；对影响多普勒计程仪测速误差的各个方面进行了综述；最后对多普勒计程仪水池试验的数据进行了处理，得出所要结论。 |
| 9. | For reducing dead - reckoning location error of doppler velocity log and compass , this thesis studies two methods , exponential flatness arithmetic and common flatness , gives the emulating results in the different tracks , proves that lawnmower is a efficient method of decreasing location error
本文研究了减小推算辅助导航系统定位误差的指数加权平滑法和一般平滑法，并结合计算机给出了在同一轨迹下，两种定位方法的区别；并且还给出了不同轨迹下的定位结果，证明了走剪草机轨迹是一种有效的减小定位误差的方法。 |
| 10. | The findings show that there exists overlap between macroscale convergence and warm advection if the degree of clock - wise turn dosen " t keep constant on both sides of zero doppler velocity contour about the near range of the observational site . the overlap produces vertical vapor transport and upward convergence movement favorable for formation and continuation of rain gush
结果表明：零速度带在测站近距离两侧的弯曲程度不一致是暖平流与大尺度辐合运动的迭加所造成，这一结构为暴雨产生和维持提供了有利的水汽垂直输送和辐合上升运动。 |
