Motion Without Markers
Visual odometry estimates motion frame-by-frame using the onboard camera. The drone always knows how far it has moved.
Saarthi
Navigation That Doesn't Depend on the Sky.
Saarthi is a plug-and-play GPS-denied navigation module for drones — built in response to a documented gap in India's indigenous drone ecosystem.
Context
Post Operation Sindoor evaluations revealed that 46 indigenous drone makers failed GPS-denied environment trials. Saarthi was built to address exactly this.
What it does
Attaches to existing fleets. No redesign required. Software-only if the drone has a downward camera and standard sensors — hardware module otherwise. From the moment GPS is denied, Saarthi navigates.
Technology
Self-Correcting Navigation
Loop closure recognizes previously seen terrain and corrects accumulated drift. The longer it flies, the more accurate it gets.
Position Without Satellites
Global pose localization matches live sensor data against mapped references to maintain absolute position — no GPS signal required.
No Single Point of Failure
Multi-sensor fusion combines visual and inertial data tightly. When one input weakens, others compensate.
Fully Onboard. Zero Cloud.
All processing happens on the drone, in real time. No cloud dependency, no latency.
Every Flight Makes It Smarter
Flight data logging improves the model. Saarthi compounds with deployment.
Current status
Prototype validated. Less than 5% error rate, zero GPS from minute zero, starting coordinates only. Submitted for evaluation. Active prototype stage.