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相对测距
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  relative ranging
     Research on Relative Ranging and Time Synchronization Between Formation Flying Small Satellites
     编队小卫星间相对测距和时间同步方法研究
短句来源
     The method for reducing those errors is discussed. In the end,the author analyzes the results and obtains the error of relative ranging being less than 10cm and the error of time synchronization being no more than 0.1 ns.
     对误差项进行综合分析后,得出星间相对测距误差可达到厘米级,时间同步测量误差优于0.1 ns的结论。
短句来源
  “相对测距”译为未确定词的双语例句
     The results show that the ranging relative-error is below 4% for a target at 10 km and the response time is less than 0.5s. The advantages of high accuracy,real-time make it will be attractive in mobile target positioning.
     测距系统测距精度高、稳定性好、实时性好,对于10km目标相对测距误差小于4%,响应时间小于0.5s。
短句来源
     Satellite autonomous positioning based on relative measurement
     基于星间相对测距的卫星自主定位
短句来源
     Research on Integer Ambiguity of Carrier Phase Measurements in Satellite-to-satellite Relative Autonomous Ranging
     星间自主相对测距中载波相位整周模糊解算方法研究
短句来源
     The high speed movement of object and rapid change of intensity of received optical signal determined traditional methods of phase-shift distance measuring can not be used in space working condition.
     空间交会过程中目标相对测距机高速运动以及因此带来的光强迅速变化,决定了传统的相位测距思路无法直接应用于空间交会。
短句来源
     The high speedmovement of object requires the rangefinder have fast ranging speed rate,and the space rendezvous requires high ranging precision.
     空间交会过程中目标相对测距机高速运动,对测距精度和测距速率均有很高的要求。
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  相似匹配句对
     Theory of Relativity & Theory of Relative Absoluteness
     相对绝对论
短句来源
     THE STUDY OF RELATIVE COULOMETRIC TITRITION
     相对库仑滴定法
短句来源
     Satellite autonomous positioning based on relative measurement
     基于星间相对测距的卫星自主定位
短句来源
     Research on Relative Ranging and Time Synchronization Between Formation Flying Small Satellites
     编队小卫星间相对测距和时间同步方法研究
短句来源
     Ranging Accuracy of Underwater Sound
     水声测距精度
短句来源
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The paper introduces the character of formation flying small satellites,and then puts forward a design method for inter-satellite relative ranging and time synchronization.The author analyzes the ranging and time synchronization error due to the error of code and carrier phase tracing loop, and the error of relative motion of satellites and the change of time-tag between satellites.The time delay error of the radio tracing and instrumentation in satellites and the antenna phase center error are introduced.The...

The paper introduces the character of formation flying small satellites,and then puts forward a design method for inter-satellite relative ranging and time synchronization.The author analyzes the ranging and time synchronization error due to the error of code and carrier phase tracing loop, and the error of relative motion of satellites and the change of time-tag between satellites.The time delay error of the radio tracing and instrumentation in satellites and the antenna phase center error are introduced.The method for reducing those errors is discussed.In the end,the author analyzes the results and obtains the error of relative ranging being less than 10cm and the error of time synchronization being no more than 0.1 ns.

介绍了编队飞行小卫星的特点,提出采用无线电双向单程测距方法实现星间相对测距和时间同步,计算了伪码和载波相位跟踪环路、星间相对运动、钟差变化、测量设备延迟、天线相位中心误差带来的星间相对测距和时间同步误差,讨论了降低误差的方法。对误差项进行综合分析后,得出星间相对测距误差可达到厘米级,时间同步测量误差优于0.1 ns的结论。

A binocular passive ranging system is developed.The key techniques of binocular ranging are analysed in detail.An improved algorithm of matching is proposed.By incorporating sketchy matching with accurate matching,and using parabola fitting,the matching position can be obtained quickly and accurately in the order of sub-pixel.The experiments on the ranging system's stability,repeatability and precision have done.The results show that the ranging relative-error is below 4% for a target at 10 km and the response...

A binocular passive ranging system is developed.The key techniques of binocular ranging are analysed in detail.An improved algorithm of matching is proposed.By incorporating sketchy matching with accurate matching,and using parabola fitting,the matching position can be obtained quickly and accurately in the order of sub-pixel.The experiments on the ranging system's stability,repeatability and precision have done.The results show that the ranging relative-error is below 4% for a target at 10 km and the response time is less than 0.5s.The advantages of high accuracy,real-time make it will be attractive in mobile target positioning.

基于双目视差测距原理,建立了一个被动测距实验系统。围绕提高测距系统的测距精度、准确率、速度和抗干扰性能等,研究了图像预处理、配准算法、搜索策略等关键技术。提出了改进的互积相关配准测度,并采用粗、精配准相结合的搜索策略以及抛物线拟合方法,实现了快速双目立体目标测距。实验证明该测距算法可有效地抑止噪声、双目光强和图像对比度差异等因素的影响;测距系统测距精度高、稳定性好、实时性好,对于10km目标相对测距误差小于4%,响应时间小于0.5s。

 
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