Disha
Run Disha on your drives
01Working model · 2026
Tunnels and underpasses block GPS, so the pin on your map stops while you keep driving. Disha keeps it moving, using the sensors already inside your phone.
Illustration. Disha is a working model, not yet an app you can download.
02In a tunnel
Based on a real 57-second loss of GPS in an Ahmedabad underpass. Disha came out 125 m from the true exit. The frozen pin was 300 m out.
03Who it helps
An ambulance stays on the control-room screen through a tunnel or an underpass.
A consignment does not disappear between the last fix and the next one.
The trip keeps moving through underpasses and basement car parks.
The pin keeps moving, so the exit is not missed.
04How it works
The motion sensors already in your phone sense every turn and every change of speed.
A road map is kept on the phone. A car cannot drive through buildings, so Disha keeps the pin on real roads.
While GPS still works, Disha learns how the phone sits in its holder. When GPS drops, it carries on from there.
05Tested on real drives
With Disha84.5m
Typical miss with DishaFrozen pin372.9m
Typical miss with a frozen pin, what a phone shows todayMedians over 903 simulated GPS outages on 20 of the team’s own drives. Own test set, not yet externally validated.
Disha is a working model, tested on recorded drives. It fills the gap while GPS and NavIC are blocked. It does not replace them.
06Work with us
We are looking for a pilot partner, such as a fleet or an ambulance control room, to log real drives through tunnels and underpasses. We also want an outside validation or data partner, and mentors in navigation, sensor fusion and mobile deployment.
Built by Jeet Chauhan for an ISRO problem statement at Smart India Hackathon 2026.
07Questions
GPS and NavIC need a clear view of the satellites. In a tunnel, an underpass or a basement car park the phone loses them, and the pin freezes while the vehicle keeps moving.
Working out where you are from where you were, how fast you moved and which way you turned. Disha does it with the phone’s own sensors.
No. It uses the phone’s accelerometer and gyroscope and a cached road map. A wheel-speed feed is optional.
Not yet. Disha is a working model tested on recorded drives. It is not yet running as an app on a phone.
On the team’s own test set, the median error at the end of an outage is 84.5 m, against 372.9 m for a frozen pin. Own test set, not yet externally validated.
No. It fills the gap while GPS and NavIC are blocked.
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