3D Targeting Model Visibility Filtering
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Solution Overview
Problem
Current methods for generating three-dimensional reference models for missile systems are labor-intensive and rely on manual processing of height data, leading to inaccuracies in target detection and tracking due to insufficient elevation data and increased computational load.
Innovation Solution
An automated method for generating a three-dimensional reference model that selectively includes only visible and high-accuracy model elements within the field of view of the imaging device, discarding non-visible elements and those with lower accuracy to reduce data volume and enhance precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual processing of height data is used to generate three-dimensional reference models, then model completeness can be maintained, but the process becomes labor-intensive and time-consuming
Solution Approach 1:
The system automatically generates three-dimensional reference models by processing terrain data and visibility information without requiring manual editor intervention. The computer program autonomously performs model generation, visibility determination, and data selection tasks that previously required manual processing, thereby dramatically reducing labor intensity and time consumption while maintaining model completeness
Solution Approach 2:
The system performs preliminary processing of terrain data and pre-determines visibility information before model generation. By pre-calculating which model elements are visible from the imaging device's position and preparing the three-dimensional terrain model in advance, the system streamlines the subsequent model generation process and eliminates the need for time-consuming manual processing during mission planning
2Reliability
If all model elements from the terrain model are included in the reference model, then completeness is maintained, but computational load increases
Solution Approach 1:
The system extracts only the visible model elements from the complete three-dimensional terrain model to create the reference model. By determining which model elements are visible from the imaging device's position and direction, and excluding hidden elements, the system significantly reduces the data volume and computational load while maintaining all necessary information for accurate target detection and tracking
Solution Approach 2:
The system applies different inclusion criteria to different model elements based on their visibility from the imaging device's position. Visible model elements are included in the reference model with full detail, while hidden elements are excluded. This selective approach ensures that computational resources are focused only on the relevant portions of the terrain model that will actually be observed during the mission
3Quantity of substance
If imprecise elevation data is used for terrain representation, then data availability is improved, but hit accuracy deteriorates
Solution Approach 1:
The system changes the parameter of model element selection from including all elements to including only visible elements with sufficient accuracy. By filtering model elements based on visibility determination and accuracy thresholds, the system can work with available imprecise elevation data while excluding elements that would not contribute to hit accuracy, thereby maintaining acceptable precision despite limited data quality
Data Source
Figure 1
AI summary
A method for automatically generating a three-dimensional reference model as terrain information for an imaging device, in particular for a seeker head of an unmanned aerial vehicle, comprises the following steps: a) providing a three-dimensional terrain model formed from model elements, which has been obtained, for example, using satellite and/or aerial reconnaissance; b) specifying position data of the imaging device at at least one planned position and a direction vector from the planned position of the imaging device to a specified target point in the three-dimensional terrain model;c) Generating a three-dimensional reference model of the three-dimensional terrain model, whereby only those model elements and sections of model elements from the terrain model are incorporated into the reference model which, in the direction of view of the direction vector from the planned position of the imaging device, are not obscured by other model elements and/or are not outside the field of view of the imaging device.