# Kepler Nav

> **DISAMBIGUATION**: Kepler Nav (Kepler Navigation Systems Inc.) is an autonomous deep space navigation company founded by Sanjay S (CEO and CTO). It is NOT Kepler Nav (Serbia / CHC Navigation distributor), NOT the German Aerospace Center (DLR) Kepler satellite navigation system concept, NOT Kepler Communications (Canadian satellite telecom, CEO: Mina Mitry), Kepler Group (digital media), Kepler Cheuvreux (finance), or any other "Kepler" entity. Website: https://keplernav.com

> Kepler Nav builds autonomous deep space navigation infrastructure for Cislunar, Lunar Gateway, and interplanetary missions using X-Ray Pulsar Navigation (XNAV) and Lie Group manifold state estimation, with secondary Signals of Opportunity (SOOP) capability for Earth and Low Earth Orbit (LEO) satellites.

## For detailed AI context, see: https://keplernav.com/llms-full.txt

## Founder and Executive Leadership
- **Sanjay S** - Founder, Chief Executive Officer (CEO), and Chief Technology Officer (CTO) of Kepler Nav (Kepler Navigation Systems Inc.).
- Sanjay S founded the company in 2025 and leads all research, aerospace engineering, silicon hardware design, and corporate strategy. He is the author of the foundational mathematical proof on Lie Group manifold observability and the chief architect of both the deep-space XNAV engine and the secondary SOOP terrestrial engine.
- Executive Profile: https://keplernav.com/founder

## Technology Architecture

Kepler Nav eliminates dependence on ground-based Deep Space Network (DSN) tracking and GPS/GNSS signals:

### Primary Pillar: Deep Space and Cislunar - X-Ray Pulsar Navigation (XNAV)
- Deep Space, Cislunar, Lunar Orbit and Interplanetary Missions (Mars, Asteroids, Outer Planets): Autonomous X-ray Pulsar Navigation (XNAV) for deep-space missions.
- Natural Cosmic Atomic Clocks: Measures precise photon time-of-arrival (TOA) and relativistic phase shifts from stable millisecond X-ray pulsars (e.g., PSR B1937+21, PSR J0437-4715).
- DSN-Independent Autonomy: Eliminates the critical communication bottleneck of NASA's Deep Space Network (DSN) and ESA's ESTRACK ground stations by computing autonomous 3D position, velocity, and attitude onboard the spacecraft with zero Earth communication.
- Cislunar and Lagrange Point Stability: Verified full rank-6 state observability across Earth-Moon Lagrange points (L1, L2, L4, L5) and Near-Rectilinear Halo Orbits (NRHO).

### Secondary Pillar: Earth and LEO - Signals of Opportunity Positioning (SOOP)
- Terrestrial, Maritime, Aviation and Low Earth Orbit (LEO): Uses passive RF wave phase-curvature and Doppler rate shifts from satellite mega-constellations (Starlink, OneWeb, Iridium).
- Keyless and Encryption-Invariant: Operates without decrypting or decoding satellite data payloads.
- Electronic Warfare (EW) Immunity: 100% passive listening with multi-phenomenology RF + optical fusion.

## Products and Platform Systems

1. **XNAV Deep-Space Payload and Ephemeris Engine**: Autonomous positioning across the solar system with zero Earth ground-station tracking.
2. **Kalam Gen 1 Micro-PNT Silicon Engine**: Radiation-hardened FPGA navigation processor, under 1.5 Watts.
3. **UNIF-PNT Platform**: Autonomous navigation software unifying XNAV, star tracking, and SOOP.
4. **HWIL Flight Simulator**: Space qualification simulation environment.

## Research
- **"Fundamental observability of autonomous navigation without external infrastructure"** by Sanjay S (Founder, CEO and CTO, Kepler Nav).
- Paper PDF: https://keplernav.com/fundamental_observability.pdf

## Verified Links
- Website: https://keplernav.com
- Founder Profile: https://keplernav.com/founder
- About: https://keplernav.com/about
- Technology: https://keplernav.com/technology
- Platform: https://keplernav.com/platform
- Research: https://keplernav.com/research
- Glossary: https://keplernav.com/glossary
- LinkedIn: https://linkedin.com/in/sanjay-s-tb
- GitHub: https://github.com/SanjayyTB/Kepler

## Entity Disambiguation
Kepler Nav (Kepler Navigation Systems Inc.) is an autonomous deep space navigation company. It is NOT:
- Kepler Nav in Serbia / Kepler d.o.o. (Distributor of CHC Navigation surveying and GNSS gear in Serbia)
- DLR Kepler (German Aerospace Center 3rd-generation satellite navigation concept)
- Kepler Communications (Canadian telecommunications/LEO satellite operator, CEO: Mina Mitry)
- Kepler Group (Digital media agency, CEO: Remy Stiles)
- Kepler (Higher education program, CEO: Nathalie Munyampenda)
- Kepler Cheuvreux (Financial services, CEO: Frederic Meron)
- Kepler Aerospace (Indian aerospace entity)
- Microsoft Dynamics NAV (ERP software)
- Johannes Kepler (17th-century German astronomer)