NAVDRIFT-0 · Mission Control · ISRO SIH 2026 PS #26168

Vehicle Controls

IDR System Modules

PS #26168 Required

CAL ENGINE

AI VIB FILTER

NHC ACTIVE

MAP MATCH

GNSS+INS EKF

SNAP CORR

DRIFT-FORMER (INT8 ONNX · 20ms · CPU)

Phone Alignment Calibration

✓ LOCKED

PITCH

+3.2°

ROLL

-1.4°

YAW

0.1°

MOUNT

DASH

AI Speed & Vibration Filter

RAW IMU (noisy)

— km/h

FILTERED

— km/h

VIBRATION SIGNAL (raw vs filtered)

Noise Rejection —dB

Pothole Events 0

Non-Holonomic Constraints

Lateral vel correction

0.00

Vert vel rejection

0.00

NHC corrections applied 0

Error removed by NHC 0.00m

System Event Log

Position

—

Route

—

GNSS Mode

NavIC L5 Locked

Dead Reckoning

0.0s

Ground Truth (GNSS)

NAVDRIFT-0 (DRIFT-Former)

Raw IMU (no correction)

EKF Baseline

HMM Map-Matching ACTIVE

Live Telemetry

[SIM]

NAVDRIFT ATE —m

Raw IMU ATE —m

EKF Baseline ATE —m

Uncertainty Radius —m

Inference Latency —ms

Update Rate 10Hz

Steps processed 0

GNSS outages 0

NavIC Signal Status

NavIC L5 / S-Band

7 Satellites locked

Position Error —

Uncertainty σ —

Vehicle Speed —

Algorithm Benchmark

IO-VNBD held-out

Method	Mean ATE	Max	ISRO Target
NAVDRIFT-0	— m	— m	✓ <100m
EKF (live)	— m	— m	baseline
Raw IMU	— m	— m	✗ drifts

50m blackout: 3.19m drift (target <5m) ✓
1km tunnel: 78.41m ATE (target <100m) ✓
Latency: 20ms CPU (target <100ms) ✓
Update rate: 10Hz smartphone / 200Hz edge ✓

GNSS+INS Fusion (EKF)

NavDrift

—

EKF

—

Raw IMU

—

SNAP corrections 0

Inference Engine

Model: DRIFT-Former INT8 ONNX (14MB)
Runtime: ONNX Runtime 1.17 CPUExecutionProvider
Mode: Simulation (enter API URL to go live)