Sanjay S

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

As the company's primary researcher and technical architect, 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. This proof demonstrates that autonomous 6-DOF state recovery - position, velocity, and attitude - is achievable using only ambient signal measurements, without any GPS, GLONASS, Galileo, or ground station input.

Under Sanjay's leadership as CEO & CTO, Kepler Nav has developed key autonomous space products:

• XNAV Deep-Space Payload & Ephemeris Engine - Integrated X-ray photon detector interface and relativistic pulsar timing engine delivering DSN-independent 3D positioning across Cislunar space, Lunar Gateway (NRHO), and interplanetary Mars trajectories.
• Kalam Gen 1 Micro-PNT Silicon Engine - A radiation-hardened FPGA navigation processor that executes complete autonomous Lie Group manifold state estimation with power consumption under 1.5 Watts.

Sanjay also serves as Chief Researcher and leads R&D Division 06 at Kepler Nav, directing the company's work in X-ray pulsar navigation, Signals of Opportunity Positioning, invariant Kalman filtering on Lie Group manifolds, and radiation-hardened silicon architecture for space applications.

Sanjay S founded Kepler Nav in 2025 with the mission of eliminating humanity's dependence on GPS and ground-based tracking infrastructure for positioning, navigation, and timing - building autonomous navigation systems that work everywhere from Earth's surface to interplanetary deep space.