接收机自主完好性监测

接收机自主完好性监测的相关文献在2006年到2022年内共计100篇,主要集中在无线电电子学、电信技术、测绘学、航空 等领域,其中期刊论文60篇、会议论文7篇、专利文献2819303篇;相关期刊40种,包括测绘与空间地理信息、测绘科学技术学报、系统工程与电子技术等; 相关会议4种,包括第八届中国卫星导航学术年会、第五届中国卫星导航学术年会、第二届中国卫星导航学术年会(CSNC2011)等;接收机自主完好性监测的相关文献由243位作者贡献,包括刘建业、孟骞、曾世杰等。

接收机自主完好性监测—发文量

期刊论文>

论文:60 占比:0.00%

会议论文>

论文:7 占比:0.00%

专利文献>

论文:2819303 占比:100.00%

总计:2819370篇

接收机自主完好性监测—发文趋势图

接收机自主完好性监测

-研究学者

  • 刘建业
  • 孟骞
  • 曾世杰
  • 曾庆化
  • 王尔申
  • 黄河泽
  • 庞涛
  • 张晓林
  • 薛瑞
  • 许睿
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 夏敬潮; 汪善根; 金向农; 曾秋
    • 摘要: 接收机自主完好性监测通常是建立在冗余观测值的基础上,然而在城市复杂环境下,卫星信号易受高层建筑物的遮挡,观测到的卫星数量往往不足,为此,本文探讨了Wi-Fi辅助的北斗定位的完好性监测方法。Wi-Fi的辅助功能主要体现在它可以为接收机提供概略的位置信息,当只有4颗观测卫星时,可将单点定位结果与Wi-Fi定位结果进行比较,从而判断卫星定位结果的可用性;另外,当卫星坐标或者观测值出现异常时,无初始坐标的单点定位往往不能迭代出正确的结果,此时可在Wi-Fi定位结果的基础上作进一步的数据预处理,以剔除掉异常的卫星。
    • 铁凯博; 米根锁; 王彦快
    • 摘要: 针对全球卫星导航系统(GNSS)在列车定位过程中,出现故障卫星会危及行车安全这一问题,提出了将接收机自主完好性监测(RAIM)技术应用到列车定位。在分析多星座系统列车定位及RAIM算法原理的基础上,构造了多星座系统的观测方程,利用奇偶矢量法构造检测统计量对故障卫星进行检测识别。采用青藏铁路数据对全球定位系统(GPS)、伽利略卫星导航系统(Galileo)、北斗卫星导航系统(BDS)多星座组合RAIM和GPS单星座RAIM进行仿真测试。结果表明,多星座系统的水平保护级(HPL)相对较小,且故障检测率和故障识别率较单星座系统有明显提高,位置精度因子明显降低,表明多星座RAIM技术可有效提高列车定位的精度。
    • 刘一; 周威; 金际航; 边少锋; 谷守周
    • 摘要: 针对当前接收机自主完备性监测(receiver autonomous integrity monitoring,RAIM)算法中存在多粗差探测识别能力较弱、计算效率不足等问题,提出一种基于Mean Shift(MS)模型的多粗差探测RAIM算法。首先利用QR奇偶检校法构建样本数据集和QR检验向量;其次基于MS模型估计样本密度中心,并以此作为MS检校向量,使用观测向量与MS检校向量的距离来评价观测值可靠程度,从而确定异常观测卫星;最后联合观测向量、MS和QR检校向量构建基于距离关系的权系数函数,对多个异常观测进行处理。实验结果表明,基于MS检校向量的粗差判别方法在多粗差存在的情况下,具有更灵敏的粗差识别能力;相比最小二乘残差法,新型RAIM算法改善了多粗差探测识别能力和计算效率,可有效提高多系统融合单点定位的可靠性。
    • 王文博; 徐颖
    • 摘要: 基于鲁棒扩展卡尔曼滤波(robust extended Kalman filter,REKF)的接收机自主完好性监测(receiver autonomous integrity monitoring,RAIM)对双星故障模式的检测及识别效果相对较差,尤其当故障矢量具有较高的空间一致性时,M估计的稳健性会受到极大破坏.针对这一问题,提出基于稳健MM估计的REKF RAIM算法,MM估计是兼具高崩溃污染率和高估计效率的两步抗差估计方法,首先采用具有高崩溃污染率的最小截断二乘(least trimmed squares,LTS)估计获得稳健性高的迭代初值和尺度参数,然后采用IGG Ⅲ方案得到最终的参数估计值,并设计一种基于特征斜率的快速选星方法降低LTS估计的计算量.仿真结果表明,相比于基于M估计的REKF,MMREKF在双星故障模式下具备更高的稳健性,对双星故障模式有更好的检测与识别能力.
    • PENG Yaqi; XU Chengdong; NIU Fei; LI Zhen; FAN Guochao
    • 摘要: 针对基于粒子滤波的接收机自主完好性监测(receiver autonomous integrity monitoring,RAIM)算法中普遍存在粒子退化和采样枯竭问题,提出基于鲁棒扩展卡尔曼粒子滤波(robust extended Kalman particle filter,REKPF)的RAIM算法.该算法利用扩展卡尔曼滤波计算粒子的建议密度函数,引导重采样做出更加准确的采样分布;同时,为了减小伪距偏差对滤波估计的影响,利用抗差估计对卡尔曼增益矩阵进行修正.通过实测数据构建卫星故障检测的检验统计量,对各状态的累加对数似然比进行一致性检测.仿真结果表明,当存在伪距偏差时,基于REKPF的RAIM算法能够有效诊断故障星,缩短告警延迟时间,提高定位精度,算法性能更好.
    • 阳凯; 郭承军
    • 摘要: In order to reduce the integrity risks and continuity risks in the process of precision vertical guidance of aircraft,and make the Receiver Autonomous Integrity Monitoring (RAIM) algorithm provide the horizontal and vertical integrity for security,this paper proposes a Multiple Hypothesis Separation Solution (MHSS)-based RAIM algorithm to solve Vertical Protection Level(VPL).The algorithm is based on the premise that the integrity and continuity of the Global NAvigation Satellite System (GNSS) can be met,and the optimal Vertical Protection Level(VPL) is obtained by optimizing the allocation of the integrity budgets and the continuity risks in each hypothesis failure mode.Simulation results show that the proposed algorithm can provide a more accurate VPL value and increase the availability of the system compared with the traditional slope-based RAIM algorithm.It also has good robustness with the increasing prior probability of satellite failure.%为降低飞行器精密垂直引导进近过程中的完好性风险和连续性风险,使接收机自主完好性监测(RAIM)算法能提供水平方向和垂直方向上的完好性保障,提出一种基于多假设解分离的RAIM算法来求解最优垂直保护门限(VPL).在满足全球导航卫星系统(GNSS)完好性和连续性的前提下,优化GNSS系统对各假设故障模式的完好性风险和连续性风险分配,得到最优VPL.仿真结果表明,与传统基于斜率的RAIM算法相比,该算法能够提供更精确的VPL值,提高了系统可用性,并且随着卫星故障先验概率不断增大仍具有较好的鲁棒性.
    • 宋建材; 侯春萍; 薛桂香
    • 摘要: With the rapid development and application of global navigation satellite system(GNSS),the importance of receiver autonomous integrity monitoring(RAIM)is growing.This paper proposed a novel RAIM fault detection and identification method based on the extended Kalman filter(EKF),with an integrated use of all the observations of current and previous epoch to carry out the state estimate,and pretreatment pseudorange combined using carrier phase smoothing algorithm,which can further reduce the effect of distance error on RAIM algorithm and decrease the horizontal and vertical protection level.Compared with the traditional method based on weighted least squares method(WLS)estimation for GNSS receiver,this method improves the detection capability of slow transition fault and decreases the radial error protection.Simulation results show that this algorithm has a better detection perform-ance with the merits of having a recursive calculation,a small amount of computation and real-timing capability.%随着GNSS应用范围和研究深度的不断增加,接收机完好性检测性能需求也相应提高.基于加权最小二乘法的"快照"估计方法只利用当前历元观测信息,性能有一定局限性.本文提出了一种基于扩展卡尔曼滤波的RAIM检测和故障识别方法,综合运用当前和之前历元的观测量进行估计,利用正交分解方法转化为标量顺序计算,避免了迭代过程的矩阵求逆.仿真结果表明该方法检测性能较好,可以减小径向保护误差,提高故障检测能力,同时具有递推计算、运算量小、实时性高的优点.
    • 李臻; 宋丹; 张鹏飞; 许承东
    • 摘要: In order to improve the detection performance of the receiver autonomous integrity monitoring (RAIM) algorithm for micro and slowly growing pseudo-range bias, a new RAIM method based on robust extended Kalman filter (REKF) and extrapolation-accumulation is proposed.In this method, the test statistics of the innovation extrapolation method in several epochs is accumulated, thus it has a better ability in detecting micro and slowly growing bias.Meanwhile, the pseudo-range bias is corrected by REKF.The simulation results show that, compared to the conventional RAIM method, the innovation extrapolation method and the accumulated epoches method, the new method has a higher fault detection rate for micro pseudo-range bias and shorter detection time-delay for slowly growing pseudo-range bias, and the position accuracy is improved after correcting the pseudo-range bias.%为了提高接收机自主完好性监测(receiver autonomous integrity monitoring, RAIM)算法对微小缓变伪距偏差的检测能力,提出一种基于抗差扩展卡尔曼滤波和外推-积累的RAIM方法.该方法结合了新息外推法和累积历元法在检测微小缓变伪距偏差上的优势,即在新息外推法的基础上,累加多个历元的检验统计量,来更有效地检测微小缓变伪距偏差;同时,利用抗差扩展卡尔曼滤波对偏差进行抗差处理,提高了定位精度.仿真结果表明,相比较于传统RAIM方法、新息外推法以及累积历元法,新的RAIM方法均提高了对微小伪距偏差正确检测的概率,缩短了对缓变伪距偏差的检测延时,且经过伪距偏差修正后定位精度提高.
    • 卢虎; 韩雷晋; 谢岩
    • 摘要: 通过对单频接收机的“虚拟多频点”电离层延时关联模型的研究,建立了一种新型单频接收机虚拟多频接收机自主完好性监测方法,给出了虚拟多频故障监测和识别的判据。仿真结果表明,“虚拟多频”接收机自主完好性监测方法不仅突破了传统接收机自主完好性监测算法对可见星数目的限制,而且还能在不改变单频接收机硬件结构的前提下,极大地提升接收机的完好性监测性能,具有很好的理论意义和实用价值。%In the GNSS era,how to effectively enhance the navigation signal integrity monitoring capacity by using multi-frequency information is becoming a hot topic and the mainstream of RAIM technique.Based on the “virtual" multi-frequency ionospheric delay model of the single-frequency receiver, the paper proposes a novel virtual multi-frequency integrity monitoring technique for the single-frequency receiver, then presents the virtual multi-frequency criterion for fault detection and identification.Simulating results show that the“virtual multi-frequency"RAIM technique not only breaks through the limit to the number of visible satellites of traditional RAIM algorithms,but also greatly enhances the RAIM performance of the receiver without changing the hardware structure of the receiver,which would be of a tempting theoretical and practical value.
    • 刘江; 蔡伯根; 王剑
    • 摘要: 基于北斗导航系统实现列车定位具有显著的性能及成本效益。为确保其符合特定应用需求,需要对定位完好性进行有效监测。立足于对常规接收机自主完好性监测方法进行有效辅助,本文提出一种应用于北斗列车定位的接收机自主完好性监测可用性预测方法。该方法利用北斗导航系统历书信息,结合列车运行计划实施完好性监测离线计算,预先对实际行车过程中可能的完好性状况进行估计,为列车在途定位完好性监测计算提供先验信息,确保定位结果满足应用需求。采用现场试验数据验证了本文所提出方法的预测能力,在基于卫星导航的列车控制等系统领域具有重要的应用价值。%The cost-efficiency and performance of train positioning can be greatly enhanced by using the BeiDou navigation satellite system (BDS). In order to meet the specific requirements of railway applications, the integrity of BDS-based train positioning should be monitored effectively. Aiming at enhancing the conventional receiver autonomous integrity monitoring (RAIM) solutions, in this paper, a RAIM availability prediction method for the BDS-based train positioning is proposed. In this method, the off-line RAIM computation is performed based on the BDS almanac and train operation plan, which can estimate the probable integrity status during practical operations in advance. The prediction results provide priori information for the on-line RAIM and guarantee the fulfillment of specific application requirements. Field results demonstrate the prediction capability of the proposed method, and it is of great value in many satellite-based railway applications as train control systems.
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