Inside VyomIC
Understanding VyomIC
VyomIC is building a Low-Earth-Orbit PNT satellite constellation designed for precision, autonomy, and resilience. Each satellite is equipped with indigenously developed software-defined radios, precise orbit determination modules, inter-satellite links, and atomic clock ensemble, enabling it to generate its own robust navigation signals, maintain highly stable timing, and coordinate directly with other satellites in the network.
Together, these satellites form a distributed and intelligent space architecture that reduces dependence on large ground infrastructure and ensures the system remains operational even with minimal ground support.
Autonomous Satellites for Autonomous Applications
Onboard Precise Orbit Determination (POD)
Measurement models coupled with physics-based models, together with our high performance algorithm framework, enable real-time orbit determination directly onboard the satellite.
Benefit: cm-level positioning accuracy for users without the need for augmentation.
Inter-Satellite Links (ISL)
Inter-Satellite Links provide additional range measurement data and timing information for each satellite in the constellation, enabling the network to achieve greater precision in both time and space. ISLs will also serve as a dedicated communication channel between satellites.
Benefit: Improved time synchronization and orbit determination accuracy.
Clock Synchronization
Our indigenously developed atomic clock ensemble, integrated with inter-satellite links (ISL) and our dedicated timing ground station, provides direct high frequency stability for the navigation signal without relying on any correction parameters.
Benefit: Lightweight, low power, highly precise and redundant timing architecture.
Built for Precise Coverage
Operating from Low Earth Orbit enables stronger received signals and faster geometry refresh, supporting rapid convergence and reliable positioning.
VyomIC targets centimeter-class accuracy for dynamic and mission-critical applications, without reliance on large ground-based augmentation systems.
Indoor Signal Penetration
VyomIC’s stronger signal strength allows improved availability in indoor, urban, and partially obstructed environments.
Secure-by-Design
Authentication
Signals are authenticated so receivers can verify they originate from legitimate VyomIC satellites.
Encryption & Anti-Spoofing
Encrypted signal structures protect against unauthorized access and spoofing attempts.
Jamming Resistance and Signal Strength
Lower orbital altitude and signal design result in signals that are 100× stronger thus increasing resistance to jamming.
Multi-Frequency Operation (Future-Secured)
VyomIC is being designed to support multiple frequency bands improving resilience and long-term security.
Independent Time Synchronization
Time synchronization is maintained through atomic clocks onboard each satellite and distributed across the VyomIC constellation via inter-satellite links.
This space-based approach maintains continuity even when access to a ground station is limited; essential for national infrastructure and time-critical applications.
Time Accuracy
