Neural network-compensated satellite clock bias prediction for Low Earth Orbit (LEO) satellitesTianhao Wu, Bofeng Li, Haibo GeAccurate prediction of Low Earth Orbit (LEO) Satellite Clock Bias (SCB) is crucial for real-time precise applications of LEO-enhanced GNSS (LeGNSS). However, the inherent instability of oscillators aboard LEO satellites presents challenges for traditional model-driven SC...
GNSS多基线联合解算的高精度变形监测方法李博峰, 陈龙, 袁雷童GNSS变形监测应用面临监测场景复杂和监测设备低成本两大趋势。GNSS高精度监测技术依赖高效可靠的模糊度固定，但受部分遮挡、干扰频繁、监测基线长等复杂条件影响，其模糊度解算能力和变形监测服务性能显著下降。本文充分挖掘区域多监测站的时空关联特性，提出一种GNSS多基线联合简便解算的变形监测方法；推导了多基线联合解算模型的解析解，分析了浮点解精度随监测...
Deep neural network based precise orbit prediction for low earth orbit (LEO) satellitesBofeng Li,Tianhao Wu,Haibo GeHigh-accuracy orbits are the prerequisite for precise applications with all current Low Earth Orbit (LEO)-borne remote sensing and future LEO-enhanced GNSS (LeGNSS). Owing to the time latency mainly caused by the time consumption of computing precise orbit determination (POD), the...
PPP‑B2b‑RTK: a PPP‑B2b augmentation method by using the SSR corrections from a single reference station Leitong Yuan · Bofeng Li · Weikai Miao · Haibo Ge · Zhilu WuAbstract The PPP-B2b service provided by the BeiDou global navigation satellite system (BDS-3) is regarded as a convenient approach for real-time precise point positioning (PPP). However, float PPP solutions with decimeter-leve...
Enhanced Land Vehicular GNSS/INS Combined System by Using Multiple-antenna with Common Clock Guang’e Chen, Bofeng Li, Linkun He and Tianxia Liu.AbstractGlobal Navigation Satellite System (GNSS)/ Inertial Navigation System (INS) combined system is an undoubtedly vital component of Land Vehicular Navigation (LVN). However, the performance of the GNSS/INS integrated system still experiences...
A strategy to determine GRACE-FO kinematic orbit during the activation of flex power Guanlong Meng · Haibo Ge · Tianhao Wu · Bofeng LiAbstract GPS flex power can improve anti-jamming capability by enhancing the transmitting power of individual signals. However, during the active periods of GPS flex power in 2020, it was found that the accuracy of kinematic orbit for GRACE-FO satellites is d...
PLACE-LIO: Plane-Centric LiDAR-Inertial OdometryLinkun He ,BofengLi，Guang’e ChenAbstractPlanes provide effective and reliable constraints for a LiDAR (-Inertial) Odometry method to achieve accurate pose estimation. Typically, one can readily construct local planes by nearestneighborsearchorvoxelization.Comparedtoglobalplanes (GPs), these local planes are of lower confidence and always in...
Can the low earth orbit enhanced GNSS (LeGNSS) achieve the expected Precise Point Positioning (PPP) solutions in urban canyons? Yanning Zheng, Bofeng Li and Haibo GeABSTRACT Low Earth Orbit (LEO) satellites are expected to improve Global Navigation Satellite System (GNSS) Precise Point Positioning (PPP) by providing rapid geometric variations. While centimeter-level PPP accu racy has been ach...
Noise Model-Based Line Segmentation for Plane Extraction in Sparse 3-D LiDAR Data Linkun He , Bofeng Li and Guang’e ChenAbstractPlanar features serve as an important component in point cloud registration and reconstruction. However, extracting planes in the point clouds collected by a 3-D LiDAR sensor is still a challenging task due to the sparse property. To obtain reliable plane segme...
Zero-Reconvergence PPP for Real-Time Low-Earth Satellite Orbit Determination in Case of Data Interruption Haibo Ge , Guanlong Meng and Bofeng LiAbstractWith the fast development of low earth orbit (LEO) enhanced global navigation satellite system (LeGNSS), there is huge demand in LEO real-time precise orbit determination. Realtime service from international GNSS service (IGS) provides th...
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