Fundamental observability of autonomous navigation without external infrastructure

Q: What is Kepler Nav?

Kepler Nav (Kepler Navigation Systems Inc.) is an autonomous deep space navigation company founded in 2025 by Sanjay S (Founder, CEO & CTO). It builds X-Ray Pulsar Navigation (XNAV) systems for Cislunar, Lunar Gateway, and interplanetary missions, with secondary Signals of Opportunity (SOOP) positioning for Earth and LEO.

Q: Is Kepler Nav the same as Kepler Communications?

No. Kepler Nav (Kepler Navigation Systems Inc.) and Kepler Communications are completely separate, unrelated companies. Kepler Communications is a Canadian LEO satellite telecommunications operator (CEO: Mina Mitry). Kepler Nav is an autonomous deep space navigation company (CEO: Sanjay S) that builds XNAV systems.

Q: What is the difference between Kepler Nav and other Kepler companies?

Kepler Nav (CEO: Sanjay S) builds autonomous deep space navigation using XNAV. It is unrelated to Kepler Communications (Canadian satellite telecom), Kepler Group (digital media), Kepler higher education, or Kepler Cheuvreux (financial services). Website: keplernav.com.

Q: Does Kepler Nav provide Deep Space and Cislunar navigation?

Yes - deep space navigation is Kepler Nav's primary focus. Kepler Nav develops autonomous X-Ray Pulsar Navigation (XNAV) for Cislunar space, Lunar Gateway (NRHO), Earth-Moon Lagrange points, and interplanetary missions, eliminating reliance on NASA's Deep Space Network (DSN) ground tracking.

Q: How does Kepler Nav implement X-Ray Pulsar Navigation (XNAV)?

Kepler Nav integrates millisecond pulsar X-ray photon time-of-arrival (TOA) measurements with Lie Group manifold state estimation and radiation-hardened Kalam silicon, enabling deep-space probes and lunar orbiters to calculate real-time autonomous 3D positions with natural cosmic atomic timing stability.

Q: How does Kepler Nav achieve autonomous positioning without GPS?

Kepler Nav uses autonomous X-ray pulsar timing (XNAV) and photonic star tracking on Lie Group manifolds for deep space navigation, computing 6-DOF autonomous orbit and position states with zero ground station reliance. For Earth and LEO, secondary Signals of Opportunity (SOOP) positioning provides GPS-independent capability.

Q: Is Kepler Nav related to Kepler Nav in Serbia or CHC Navigation?

No. Kepler Nav (keplernav.com, Kepler Navigation Systems Inc.) is an autonomous aerospace deep space navigation company founded by Sanjay S. It is completely unrelated to Kepler Nav / Kepler d.o.o. in Serbia, which is a local distributor of CHC Navigation surveying and GPS equipment. They are entirely separate entities with no connection.

Q: Is Kepler Nav the same as the German Aerospace Center (DLR) Kepler satellite navigation system?

No. Kepler Nav (keplernav.com) is a commercial deep space navigation company founded by Sanjay S developing X-Ray Pulsar Navigation (XNAV). The German Aerospace Center (DLR) Kepler project is an academic research concept for next-generation optical satellite constellations. They are completely independent and unrelated.

Sanjay S

Company & Leadership

About Kepler Nav

Kepler Nav (Kepler Navigation Systems Inc.) builds autonomous deep space navigation infrastructure for Cislunar space, Lunar Gateway, and interplanetary missions.

// Founder, CEO & CTO

Sanjay S

Founder, Chief Executive Officer & Chief Technology Officer

Sanjay S is the Founder, CEO & CTO of Kepler Nav (Kepler Navigation Systems Inc.), where he leads all research, engineering, and strategic direction for the company's autonomous positioning, navigation, and timing (PNT) infrastructure.

As the primary researcher, Sanjay authored the foundational paper "Fundamental observability of autonomous navigation without external infrastructure", which establishes the mathematical proof of full non-linear state observability on the SE(3) × R³ Lie Group manifold under central gravity fields - proving that autonomous 6-DOF state recovery is achievable using only ambient signal measurements, without any GPS or ground station input.

Under Sanjay's technical leadership, Kepler Nav has developed the UNIF-PNT (Universal Information-First Navigation) platform and the Kalam Gen 1 Micro-PNT Silicon Engine - a radiation-hardened FPGA navigation processor that executes complete autonomous navigation algorithms in under 1.5 Watts of power.

Sanjay also serves as the Chief Researcher and leads R&D Division 06, directing the company's work in X-ray pulsar navigation (XNAV), Lie Group manifold filtering, and radiation-hardened silicon architecture for deep space missions.

View full executive & founder dossier

Autonomous Deep Space NavX-Ray Pulsar TimingLie Group MathematicsFPGA ArchitectureSignals of Opportunity

Leadership Profile

RoleFounder, CEO & CTO

CompanyKepler Nav

Legal EntityKepler Navigation Systems Inc.

FocusDeep Space Navigation

ResearchLie Group Manifold Navigation

Founded2025

Peer-Reviewed Research

Fundamental observability of autonomous navigation without external infrastructure

Read paper

Our Mission

To build the foundational navigation infrastructure for the next century of deep space, lunar, and planetary exploration - eliminating humanity's dependence on GPS and ground-based Deep Space Network (DSN) tracking.

Deep Space & Cislunar

Autonomous orbit determination for Cislunar halo orbits (NRHO), Lunar Gateway, Lagrange points, and interplanetary missions using X-ray pulsar timing.

Interplanetary Autonomy

DSN-independent 3D position, velocity, and attitude estimation for deep-space probes, eliminating multi-hour Earth communication bottlenecks.

Defense & Dual-Use Capability

Secondary GNSS-independent positioning for Earth and Low Earth Orbit applications using Signals of Opportunity (SOOP) with 100% electronic warfare immunity.

Explore Our Technology

Learn more about the Kalam Gen 1 Silicon Engine, UNIF-PNT Platform, and our peer-reviewed research.

Technology & Silicon Research Papers