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

NAVDRIFT-0

ISRO SIH 2026 · PS #26168 · IDR System

NOMINAL

GNSS LOCKED

SIMULATION PS #26168

⚙

NavIC Constellation

7 SAT LOCKED

MET 00:00:00

Controls

Ground Truth: 📍 Load CSV

IDR System Modules

PS #26168

CAL ENG

VIB FILT

NHC

MAP MATCH

EKF/UKF

SNAP

ODO·AI

MAG/AHRS

DRIFT-FORMER · INT8/INT4 ONNX · 20ms CPU · 9-ch (baro+mag)

Non-Holonomic Constraints

Lateral vel

0.00

Vertical vel

0.00

Corrections0

Error removed0.00 m

Alignment & Vibration Filter

✓ LOCKED

PITCH

+3.2°

ROLL

-1.4°

YAW

0.1°

RAW IMU (noisy)

— km/h

AI FILTERED

— km/h

VIBRATION · raw (red) vs filtered (cyan)

Pothole events filtered0

WHEEL ODO

— km/h

AI IMU EST

— km/h

MAG heading—°

AHRS confidence—%

Event Timeline

0 steps

■ GNSS ■ Blackout ■ Tunnel ■ SNAP

Event Log

Position

—

Route

—

GNSS Mode

NavIC L5 Locked

DR Duration

0.0s

Ground Truth (GNSS)

NAVDRIFT-0 (DRIFT-Former)

Raw IMU (uncorrected)

EKF Baseline

HMM Map-Match ACTIVE

Live Telemetry

[SIM]

NAVDRIFT-0 ATE—m

EKF Baseline ATE—m

Uncertainty σ—m

Inference latency—ms

Steps / Outages0 / 0

NavIC Signal

NavIC L5 / S-Band

7 Satellites locked

Live Signals

Pos Error—

Uncert σ—

Speed—

Baro Alt—

9th ch—

DRIFTFormer Attention

50-frame window

t-50 peak: — t-0

Live Algorithm Race

lower=better

NAVDRIFT

—

EKF

—

RAW IMU

—

Inference Engine

Model: DRIFT-Former INT8 ONNX (14MB)
Runtime: ONNX Runtime 1.17 · CPU
Mode: Simulation

TRANSFORMER LAYERS · 4×8-HEAD · d=128

ISRO PS #26168 Compliance

✓ PASS

50m blackout drift3.19 m ✓

1km tunnel ATE78.41 m ✓

Inference latency20 ms ✓

GNSS+INS Fusion

NavDrift

—

EKF

—

Raw IMU

low

📡

IMU PREPROCESSOR

Calibration · VibFilter · Baro(9th)

🧠

DRIFT-FORMER

Causal Transformer · RoPE · INT8/4

🔷

NAVIC VAE

Motion Prior Encoder

🗺️

MAP MATCH + NHC

Viterbi HMM · Non-Holonomic

⚡

GNSS+INS FUSION

EKF/UKF · SNAP · ODO·AI · 10Hz

📍

POSITION OUTPUT

SE(2) + Covariance · 10Hz