ID 原文 译文
21725 为了综合考虑节点调度的短期和长远损失，该文将问题建模为部分可观测马尔科夫决策过程(POMDP)以得到更优的调度策略，并提出一种近似求解算法C-QMDP。 The issue can be modeled as a Partially Observable Markov Decision Process (POMDP), which takes both short- and long- term losses of sensor scheduling into account and makes a better decision. A C-QMDP approximation algorithm suitable for continuous state space is proposed.
21726 该算法利用马尔科夫链蒙特卡洛方法(MCMC)推导连续状态空间的置信状态的转移，并计算瞬时代价。 The Markov Chain Monte Carlo (MCMC) method is used to derive the transfer function of belief state and calculate the instantaneous cost.
21727 使用状态离散化方法，基于马尔科夫决策过程(MDP)值迭代求解未来代价的近似值。 The state discretization method is used to solve the approximation of future cost based on Markov Decision Process (MDP) iteration.
21728 仿真结果表明，相比现有POMDP近似算法，该文算法既可以降低跟踪过程中的累积损失，又可以将大量运算进行离线计算，减小了在线决策时的计算量。 Simulation results show that compared to the existing POMDP approximation algorithms, the proposed algorithm can reduce the cumulative losses and computation load in the tracking process by offline computation.
21729 在城市峡谷等遮挡环境下，接收机无法连续进行定位解算；并且高程定位精度不能满足用户在立交桥或者盘山公路等环境下的定位需求。 The vertical positioning accuracy of BeiDou satellite navigation System (BDS) and the continuity of receiver in the challenge environment can not satisfy the user demand.
21730 在接收机内使用原子钟，可以利用原子钟的高稳定性，对钟差进行高精度的预测。 If atomic clocks are used in the receiver, the high stability of the atomic clock can be used for long time and high precision prediction of receiver clock bias.
21731 并通过与气压测高仪共同辅助北斗系统定位，可以有效提高接收机的定位精度和连续性； The positioning accuracy and continuity are improved by using atomic clock and barometric altimeter.
21732 该文首先理论分析了原子钟和气压测高仪辅助定位算法； This article first analyzes the atomic clocks and barometric altimeter aided BDS positioning algorithm;
21733 然后，提出一种气压测高仪初始化校正方法，并通过对钟差噪声类型的分析确定了钟差预测方法； Then, correction method is proposed for initialization of barometric altimeter, and analysis on the difference of noise type clock is used to determine the clock bias prediction method;
21734 最后，模拟遮挡环境，进行原子钟和气压测高仪辅助北斗卫星导航系统定位试验，并分析了定位结果。 Finally, positioning experiment of the atomic clock and barometric altimeter aided BDS in simulation challenge environment is carried out, and the positioning result is analyzed.