Atlas GPS Engine
The device core that never guesses
Atlas connects and understands your GPS hardware: protocols, decoding, connection state, commands, positions, trips, geofences and events. Deterministic, observable and built to scale.
- 268 tracker protocols
- Secure commands
- GPS quality scoring
- Regional scale-out
GPS core
Every essential GPS capability, done properly
The non-negotiable foundation that every SyncVelo product relies on.
Device protocols
TCP, UDP, framing, heartbeats, authentication, retransmission and packet inspection.
Live map
Position, heading, speed, ignition, fix quality, last update, clustering and filters.
Track history
Trip segmentation, replay, stops, movement, distance and odometer reconciliation.
Geofences
Polygons, circles, inclusion and exclusion, schedules and inherited scopes.
Events & alerts
Speed, ignition, SOS, tamper, disconnect, battery, GPS drift and zone breaches.
Commands
Capability profiles, queues, delivery states and audited, secure execution.
Device provisioning
IMEI and serial mapping, model and firmware, APN settings and activation tests.
GPS diagnostics
Connection timeline, raw messages, decoder errors, clock drift and network diagnostics.
History quality
Out-of-order messages, duplicates, poor fixes, corrected time and distance.
Map providers
MapLibre plus optional tile, geocoding and routing vendors with cost controls.
Reporting
Journeys, inactivity, utilisation, exceptions, exports and recurring jobs.
Fleet grouping
Customers, hierarchy, labels, roles, groups and dynamic views.
Under the hood
Raw bytes in. Trustworthy data out.
Every message is decoded by a versioned protocol decoder, validated, normalised and tagged with quality signals before any product sees it.
- Golden packet fixtures for every certified device and firmware
- Impossible-motion checks and GPS quality scoring
- Protocol fuzzing and penetration testing
- No fabricated fixes: measured error and confidence, always
Real-time data path
From GPS packet to customer screen in a single, durable flow
Every location travels the same audited path: decoded, validated, published durably, stored, processed and delivered to the right tenant.
- 01
Device connection
TCP, UDP and HTTP listeners with regional ingress, rate limits and source identity.
- 02
Atlas decoding
Vendor decoder, validation, coordinate and timestamp normalisation, then quality tagging.
- 03
Durable publication
Transactional outbox or durable stream with partition keys, retries and de-duplication.
- 04
State & storage
Latest state in a fast cache, telemetry in a scalable store, business objects in PostgreSQL.
- 05
Processing
Geofence, trip and rule services emit alerts and analytics events.
- 06
Delivery
Tenant-aware WebSocket and SSE fan-out, APIs, apps, webhooks and audit.
Continuous engineering
Extended far beyond basic tracking
Atlas is SyncVelo's continuously enhanced engine, derived from the proven open-source Traccar project, pinned to audited releases and extended with our own protocol, data and security work.
Protocol SDK
Versioned decoders, adapters and scripted fixtures, verified with recorded binary messages.
Telemetry model
A normalised GPS and sensor schema with units, timestamps, source confidence and attributes.
Device twin
Desired and reported configuration, capabilities, SIM and firmware info and health.
Advanced GNSS
Map matching, jitter filtering and wrong-time handling, with measured error and confidence.
Events & state
Custom GPS event processors, replayable state transitions and tenant rules.
Command control
Signed approvals and safe-stop requirements for sensitive operations.
Scaling
Protocol pools and shards, back-pressure, idempotency and durable event publication.
Security
Device identity, tamper handling, encryption where protocols permit, managed secrets.
Acceptance gates
Quality you can measure
Protocol fidelity
Golden packet fixtures, decoder regression tests and command round-trips.
Real-time map
Latency distributions measured on real networks, with reconnect state recovery.
GPS accuracy
Trips and stops compared with field traces; drift and invalid coordinates detected.
Resilience
Restart, queue backlog and regional failure drills, with backups and DR rehearsals.
Atlas includes software derived from the Traccar open-source project (Apache License 2.0). License notices and modification records are preserved.
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