FAQ Archive
GPSController FAQs - Page 224
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FAQ
Why can't AIS and GPS Controller data be treated as redundant systems?
AIS and GPS Controller are not redundant systems because AIS is a VHF-based broadcast system primarily for collision avoidance, while the GPS Controller is a private telematics feed. Relying solely on AIS for compliance...
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What are the main challenges when switching between AIS and GPS Controller data?
The main challenges include 'data jitter' where vessels appear to jump locations on fleet management dashboards due to latency between AIS-derived positions and GPS Controller polling. There can be conflicting position d...
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What is dark ship monitoring for oil tankers?
Dark ship monitoring is the practice of tracking a vessel when its mandatory AIS (Automatic Identification System) transponder gets switched off, either intentionally or due to equipment failure. In this scenario, the ve...
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Is special hardware required for INS fusion capabilities?
Yes, specific hardware with physical inertial measurement units (IMUs) - accelerometers and gyroscopes - built into the tracking device is required. This cannot be added through software updates alone. For war zone readi...
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Do geofence alerts and route compliance tracking continue during GPS loss with INS fusion?
Yes, geofence alerts and route compliance continue based on estimated inertial positions. However, the system reports growing position uncertainty the longer GPS is unavailable. Alerts still fire but with high confidence...
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Can INS fusion help prevent GPS spoofing attacks?
Yes, indirectly. A robust fusion algorithm constantly compares INS-derived position and trajectory against GPS reports. If spoofed GPS shows impossible jumps in location or speed that contradict inertial sensors, the sys...
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What are the practical limitations of INS tracking without GPS signals?
INS tracking suffers from error accumulation or 'drift' where tiny sensor errors add up over time. After about 10 minutes of pure inertial navigation, position error could be 100 meters, and after 30 minutes, it could dr...
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How does INS fusion help maintain fleet tracking when GPS signals are jammed or spoofed?
INS fusion uses an Inertial Navigation System with internal sensors (accelerometers and gyroscopes) to calculate position, speed, and heading when GPS drops out. It provides dead reckoning from the last known GPS fix, ke...
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Why is network latency particularly problematic for sanctions compliance in maritime tracking?
Network latency over satellite links can delay position packets by even 30 seconds, making it appear that a ship skirted an exclusion zone when it actually passed safely. This data error multiplies when generating automa...
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What are the critical features needed in a GPS system for sanctions-compliant maritime monitoring?
A compliant system needs to deliver immutable, timestamped logs, integrate multiple data sources (like GPS and AIS), automate report generation, cross-check real-time data against updated sanctions databases, and provide...
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How often do sanctioned shipping lanes change and why is this important for monitoring systems?
Sanctioned shipping lanes change dynamically based on diplomatic shifts, with new corridors designated and existing ones altered. Monitoring systems must update these geofences at least daily, as weekly or monthly update...
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What is the biggest risk when using standard GPS tracking for sanctions compliance in shipping lanes?
The biggest risk is data latency or loss creating gaps in position history. If an auditor sees a 15-minute gap in a high-risk zone, they'll assume the worst, which can lead to frozen assets or revoked licenses. Standard...
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