NTNNavigation | 无人系统天基自主导航、紧耦合惯导融合与轨道伪卫星增强系统
NTNNavigation 为自主机器人、无人机与无人货船设计高韧性导航方案，将星载 5G 信号与高精度惯导 (IMU) 及在轨伪卫星深度耦合。
NTNNavigation Deep Inertial Space-Coupled Architecture
Tight Kalman integration of satellite pseudorange vectors with tactical MEMS gyros
Central System: Tactical-Grade MEMS IMU - Fiber-optic gyro grade drift (<0.1 deg/hr)
Network Nodes
- Tactical-Grade MEMS IMU
- LEO Satellite Pseudolite Receiver
- Tightly-Coupled Extended Kalman Filter
- Autonomous Flight / Autopilot
Architectural Protocol Layers
- Spaceborne PHY/MAC Layer (3GPP Rel-17 TS 38.300): Doppler compensation, HARQ disabling, and timing advance extension.
- Orbital Mesh Routing (CCSDS / Delay-Tolerant Networking): Dynamic topology routing over intermittent laser crosslinks.
- Regenerative Core Processing (OpenRAN / 3GPP CU-DU Split): Onboard user plane function (UPF) local breakout.
Key Metrics: < 18ms (LEO Orbit-to-Ground Roundtrip) | 100 Gbps (Optical Crosslink Throughput) | ±48 kHz (Doppler Shift Compensation) | 99.999% (Orbital Constellation Availability)
自主系统空间导航、深组合惯性导航 (INS) 与星载伪卫星 (Pseudolite)
Core Engineering Areas
- Tightly-Coupled INS/NTN Integration — Directly feeding satellite carrier-phase observations into inertial Kalman filters, maintaining positioning even with fewer than 4 visible satellites.
- LEO Space Pseudolites — Broadcasting high-power dedicated navigation beacons from communication satellites to provide redundant navigation signals worldwide.
- Extended Holdover Dead Reckoning — Maintaining sub-meter navigation accuracy during temporary signal outages across tunnels, canyons, or electronic warfare zones.
Technical Articles
Related Cluster Architecture Specifications
- NonTerrestrialNetwork — 3GPP 5G/6G NTN Satellite Architecture, Direct-to-Cell & Non-Terrestrial Infrastructure
- NonTerrestrialNetworks — Multi-Orbit Heterogeneous Constellation Interworking (LEO / MEO / GEO / HAPS)
- AirspaceSync — Doppler Compensation, Relativistic Timing & Airspace-Space Synchronization
- FSOComm — Free Space Optics, High-Bandwidth Space Laser Communications & Atmospheric Mitigation