FAQ Archive
GPSController FAQs - Page 251
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FAQ
What is Galileo OSNMA and how does it protect my fleet?
Galileo OSNMA (Open Service Navigation Message Authentication) is a feature that adds digital signatures to Galileo satellite navigation signals. A compatible GPS controller can verify these signatures to ensure the sign...
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When should a fleet manager implement active countermeasures against GPS threats?
Escalate to active countermeasures when spoofing or jamming events move from rare anomalies to predictable patterns in high-risk zones, or when positional errors exceed safe maneuvering distances for laden tankers. At th...
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Why isn't upgrading GPS hardware sufficient protection against spoofing attacks?
Hardware upgrades fail because spoofing attacks inject false data that appears perfectly valid to the receiver. The real failure point is in the telemetry pipeline that doesn't cross-reference GNSS data with inertial nav...
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What compliance risks arise from falsified GPS tracking data on oil tankers?
Falsified AIS data can lead to port state control detentions, fines for violating SOLAS (Safety of Life at Sea) regulations, and invalidated insurance claims if incidents occur while positional reporting was compromised....
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How can I distinguish between GPS jamming and weak signals on my tanker?
Jamming typically causes a complete loss of all GNSS signals (GPS, GLONASS, etc.) simultaneously, while weak signals show intermittent drops. Spoofing is trickier to detect - look for impossible vessel maneuvers like ins...
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What operational problems occur when fleet software isn't immune to signal disruption?
Without immunity, operations experience cascading failures: geofence alerts fire for vehicles that haven't moved, route optimization engines recalculate based on false locations sending drivers into dead ends, fuel repor...
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How does fleet software detect and handle GPS spoofing or jamming?
Immune fleet software uses sensor fusion to cross-reference satellite data with other sources like vehicle CAN-bus data (speed, heading), cellular network location, and inertial measurements. It performs real-time signal...
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Why isn't multi-constellation GNSS hardware enough for immunity?
Multi-constellation hardware alone isn't sufficient because the software must perform real-time signal integrity checks—analyzing signal strength, satellite geometry consistency, and implausible acceleration jumps—and ha...
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What does GPS immunity mean for fleet software during signal disruption?
GPS immunity means the software can maintain a verifiable location trail when GNSS signals are jammed or spoofed. It uses continuous location inference by cross-referencing inertial sensor data, cellular tower triangulat...
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When should a fleet consider upgrading to GPS controllers with IMU backup?
Fleets should upgrade when operations go through high-risk zones, require uninterrupted compliance logging, or use location for real-time routing decisions. This is particularly important for cross-border haulage, hazard...
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How accurate is dead reckoning without GPS signals?
Dead reckoning accuracy degrades over time and distance due to sensor drift. It's best for short-term bridging—typically 2 to 5 minutes with reasonable accuracy—to maintain position estimates until GPS signals return. Th...
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How does IMU backup help detect GPS spoofing attacks?
A fused IMU-GPS system compares the movement calculated by the IMU with the GPS signal. If the GPS location suddenly jumps in a way that's physically impossible—which is a classic spoofing signature—it conflicts with the...
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