Study on Test Consistency Which Based on the Record and Playback Instrument

来源 :第八届中国卫星导航学术年会 | 被引量 : 0次 | 上传用户:john0620
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Navigation terminal testing technology has been getting more and more attention with the rapid development of satellite navigation industry.Traditional laboratory simulation test and actual signal test have advantages and disadvantages.
其他文献
This paper presents a new ambiguity resolution method,differed with traditional method which includes all observations and search the whole float ambiguities.The core is to use partial ambiguity fixin
In order to improve the accuracy of satellite clock bias(SCB)prediction,a combined model is proposed.
When generating simulation satellite navigation signal,the delay of the broadband direct-spread satellite navigation signal needs to be controlled with high precision.
In order to solve the link assignment problem in GNSS constellation,which is affected by the performance of dynamic topology,the method of Finite Time Slot(FTS)is proposed for GNSS constellation in th
The Quasi-Zenith Satellite System is developed by SPRAC of Japan.It is a regional satellite navigation and augmentation system.In this contribution,we evaluated and analyzed the accuracy,availability
贝叶斯理论在数据融合方面获得广泛应用,而源于贝叶斯理论的融合算法也层出不穷.本文将贝叶斯理论引入到基于卡尔曼滤波的多系统融合定位中.该算法将系统之间的变化关系,用一阶马氏链来描述.利用先验概率和贝叶斯理论计算出系统之间的混合概率,并在滤波前进行各个系统之间的混合,然后进行并行滤波,滤波后依据卡尔曼滤波所获得的新息计算各系统在融合定位中的概率,依据此概率进行多系统定位结果的融合,并将各系统概率和滤波
本文从GDOP与星座几何布局的关系出发,结合实际应用场景,提出了有效仰角阈值自适应分阶选星算法.该方法以满足定位要求为前提,基于可见星仰角来初筛卫星,对不同仰角卫星进行合理的取舍,以卫星均匀分布为原则,将在理想情况和实际情况下寻找有效定位平衡点,以规避无效选星并减少计算量,从而大大减少选星时间,有效实现了在组合定位中快速选星.
随着GNSS导航系统的逐步发展及完善,利用多卫星导航系统进行导航定位服务已经成为主流的趋势.另外使用多卫星导航系统联合解算卫星钟差、轨道和地球自转参数等产品俨然已是目前GNSS领域研究的热点.但是随着卫星数量和地面监测站数量的不断增多,使用所有地面监测站进行钟差等产品解算时必然会影响超快速、快速产品的解算效率.为了分析不同的测站数量对产品解算的精度和解算效率的影响,以及解算的钟差产品对定位精度的影
GNSS-R remote sensing has emerged as a new promising remote sensing technique in the past two decades.It has gained wide attention at home and abroad.
卫星导航系统的精度稀释因子表征几何布局对解算的影响,是关联原始测量域精度与解算域精度的重要指标.传统的定位解算中已经有PDOP,GDOP等成熟指标,而在高精度卫星导航寻北应用中,缺乏准确的指标表征几何布局对寻北精度的影响.本文基于双差定向模型,首次推导出了联系载波相位误差和寻北误差的精度稀释因子,定义为定向DOP值.对北斗系统定向DOP的仿真分析表明,由于北斗卫星大部分在国土南侧,南北向基线寻北的