DIRCM Handoff Accuracy via Dual On-Axis Camera Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Handoff inaccuracies in Directed Infra Red Countermeasures (DIRCM) systems are caused by platform specifics and environmental factors such as aircraft flexure, sensor mounting inaccuracies, and processing latencies, leading to delays in positional data and errors in targeting IR-guided missiles.
Innovation Solution
Incorporating a second on-axis camera with a wide field of view, such as the BAE Systems MIM500, to improve the acquisition of threats and reduce handoff inaccuracies without altering the existing optical prescription or increasing the focal plane array size, allowing for better tracking and energy-on-target alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single camera is used for threat acquisition and tracking, then the system structure is simple, but handoff inaccuracies increase due to mounting tolerances and aircraft flexure
Solution Approach 1:
The patent divides the single camera function into two separate cameras: a first camera for threat acquisition and a second camera for fine tracking. This segmentation allows each camera to be optimized for its specific function and reduces the cumulative effect of mounting tolerances and aircraft flexure on handoff accuracy.
Solution Approach 2:
The second camera acts as an intermediary between the coarse acquisition by the first camera and the fine tracking required for precise energy delivery. It provides a bridging function that compensates for handoff inaccuracies caused by platform movement and mounting variations.
2Loss of time
If processing latency is reduced to improve response time, then threat detection speed increases, but positioning accuracy may be compromised due to platform movement during the shorter interval
Solution Approach 1:
The second camera continuously tracks the threat in advance, maintaining an updated position estimate before the handoff from the first camera. This preliminary tracking action ensures that when the handoff occurs, the position data is already current and accurate, compensating for platform movement during processing.
Solution Approach 2:
The second camera provides continuous fine tracking throughout the engagement sequence, ensuring that tracking action is uninterrupted. This continuity maintains accurate threat positioning data despite variations in processing latency or platform movement between updates.
Data Source
AI summary
A method for reducing handoff inaccuracies in a DIRCM countermeasures system comprising the step of adding a second on-axis camera to the DIRCM countermeasures system.