A factor graph for PPP has been constructed. Results from 268 IGS-MGEX stations show that the FGO method can achieve a similar performance to that of Kalman filtering. First, the positioning accuracy in the convergence period can be improved for PPP based on FGO because it optimizes the ...
PPP based on factor graph optimization 来自 Springer 喜欢 0 阅读量: 5 作者:G Xiao,Z Xiao,P Zhou,X Jia,N Wang,D Zhao,H Wei 摘要: Kalman or Kalman-related filtering methods are routinely applied in precise point positioning (PPP). However, in robot simultaneous localization and mapping (...
展开更多 Aiming at the problem of global navigation satellite system signal loss caused by building occlusion,multipath effect and insufficient satellite visibility,a precise point positioning(PPP)algorithm based on factor graph optimization is proposed for the integrated positi...MORE 作者 杨显赐 乔...
Positioning systems based on TDOA are susceptible to timing synchronization errors between cellular base stations (del Peral-Rosado et al.,2018a,2018b). In the absence of NLOS signals, the measurement accuracy of TDOA primarily hinges on the time synchronization precision between base stations. A r...
Geng et al., (2023a, 2023b) applied a GNSS RTK strategy based on factor graph optimization to smartphones, achieving better positioning accuracy than using traditional filtering algorithms. Furthermore, they observed that smartphones’ channel-dependent phase biases and anomalous clock variations ...
high complexity and requires a long-distance to a reference station to determine the absolute tropospheric delay, which is not suitable for the PPP–RTK server to extract tropospheric corrections. Therefore, this section will focus on the tropospheric correction retrieval method based on the PPP ...
Recently, factor graph optimization (FGO)-based GNSS/INS integrated navigation has garnered widespread attention for its ability to provide more robust positioning performance in challenging environments like urban canyons, compared to traditional extended Kalman filter (EKF)-based methods. In existing GNS...
4.3.4. Construction Risk Calculation Based on Netica Software (1) Construction risk probability calculation. After determining the conditional probability table of each node, the conditional probability values of intermediate nodes and top nodes can be calculated. The topological graph is drawn in Netica...
ch8 Direct (Intensity based) Visual Odometry ch9 Project ch10 Back end optimization & Ceres, g2o ch11 Pose graph and Factor graph & g2o, gtsam ch12 Loop closure & DBoW3 ch13 Dense reconstruction & REMODE, Octomap slambook (中文说明) 我最近写了一本有关视觉SLAM的书籍,这是它对应的代码。
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