Dynamic GeoFence Tracking Moving Targets
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Solution Overview
Problem
Existing GeoFence systems are limited in tracking targets relative to each other when both are moving, as they rely on fixed geographic boundaries, making it difficult to determine if a target has entered or exited a dynamic area surrounding another moving target.
Innovation Solution
A method for creating a dynamic GeoFence area using pseudorange measurements to determine an instant reference point, defining the GeoFence area based on this point, and updating it periodically to track targets relative to each other, with alerts triggered if the targets do not overlap within the defined boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed GeoFence boundary is used, then the system can define a geographic boundary, but it cannot track targets relative to each other when both are moving
Solution Approach 1:
The patent transforms the static GeoFence boundary into a dynamic one by continuously updating the boundary based on the reference target's current position. The GeoFence area is no longer fixed to geographic coordinates but moves with the reference target, enabling relative tracking of multiple moving targets. This is achieved by periodically determining the reference target's position and recalculating the GeoFence boundary parameters accordingly.
2Measurement precision
If a fixed GeoFence boundary is used, then the boundary definition is simple, but it is difficult to determine if a moving target has entered or exited a dynamic area
Solution Approach 1:
The system implements continuous feedback by periodically determining the position of both the reference target and monitored targets, comparing the monitored targets' positions against the dynamically updated GeoFence boundary, and generating alerts when entry or exit conditions are detected. This closed-loop approach ensures accurate real-time monitoring of target movement relative to the moving boundary.
3Ease of operation
If manual location lookup and programming is required, then the GeoFence area can be defined, but the user cannot easily activate tracking at present location
Solution Approach 1:
The system performs automatic location determination by utilizing the reference target's position data from satellite positioning measurements. Instead of requiring manual location input, the system automatically calculates the GeoFence boundary parameters based on the reference target's current coordinates and the specified radius, enabling users to activate tracking immediately without manual programming.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables effective tracking of multiple moving targets relative to each other without the need for users to manually define their location, providing real-time alerts for boundary crossings, thus enhancing the monitoring of assets or personnel within dynamic geographic areas.
Implementation Method 1
determining an instant reference point using a first set of pseudorange measurements received by a GeoFence device
Implementation Method 2
determining a position fix using a second set of pseudorange measurements
Data Source
AI summary
A method and apparatus for creating a dynamic GeoFence area by determining an instant reference point using a first set of pseudorange measurements received by a GeoFence device, defining the dynamic GeoFence area referenced to the instant reference point, determining a position fix using a second set of pseudorange measurements, and comparing the position fix to the dynamic GeoFence area. In one aspect, an alert message based on the comparison results is presented to a user.