Hybrid Missile Alerter Verification Across UV and IR Signals
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Solution Overview
Problem
Existing missile warning systems face challenges in achieving a balance between low false alarm rates and high probability of threat detection, particularly due to the detection of non-threatening sources in various spectral ranges, leading to potential countermeasure limitations.
Innovation Solution
A hybrid missile warning system utilizing a primary sensor in the ultraviolet range and a secondary sensor in visible, near-infrared, or mid-infrared range, with an evaluation unit to verify potential threats by analyzing stored secondary sensor signals, allowing for a lower false alarm rate and increased detection probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a single spectral range camera is used for missile detection, then the detection range is extended, but the false alarm rate increases due to detection of non-threatening sources
Solution Approach 1:
The detection system is segmented into multiple independent spectral channels (ultraviolet, visible, infrared) that operate in parallel. Each channel detects threats independently, and only when multiple channels simultaneously detect a threat does the system generate an alarm. This segmentation allows each channel to maintain its own detection range while the combined system achieves low false alarm rates through cross-validation.
2Reliability
If the declaration threshold is increased to reduce false alarm rate, then the false alarm rate decreases, but the probability of threat declaration decreases
Solution Approach 1:
The system transitions from single-threshold decision-making to multi-dimensional detection by incorporating multiple spectral ranges. Instead of adjusting a single threshold parameter, the system uses dimensional expansion into different spectral domains (UV, visible, IR) where threats appear across multiple dimensions while false alarms appear in only one. This allows maintaining high detection probability while achieving low false alarm rates.
3Measurement precision
If a low declaration threshold is used to increase probability of threat detection, then the probability of threat declaration increases, but the false alarm rate increases
Solution Approach 1:
The evaluation unit acts as an intermediary that receives detection signals from multiple spectral channels and applies logic operations to combine them. The intermediary validates detections by checking for coincidence across channels, allowing the system to use low thresholds in individual channels (maintaining high detection probability) while the intermediary filtering eliminates false alarms that don't appear across all channels.
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
The system provides earlier and more accurate threat detection with reduced false alarms by leveraging different spectral ranges, enabling timely countermeasures and improved detection reliability.
Implementation Method 1
The primary sensor (110) is configured to detect a potential missile (50) using first sensor signals (61) in a first spectral range
Implementation Method 2
The secondary sensor (120) is configured to detect the potential missile (50) using second sensor signals (62) in a second spectral range
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A missile warning system comprises: a primary sensor (110) for detecting a potential missile (50) in a first spectral range; a secondary sensor (120) for detecting the potential missile (50) in a second spectral range; and an evaluation unit (130). The evaluation unit (130) is configured: to receive first detection signals (115) from the primary sensor (110) and compare them with a threshold value (S1), and, if the threshold value (S1) is exceeded, to generate a warning signal for the potential missile (50); to continuously receive second detection signals (125) from the secondary sensor (120) and store them for a predetermined period; and, if the warning signal is present, to perform a verification of the potential missile (50) based on a traceback, wherein the traceback includes an analysis of the stored sensor signals of the secondary sensor (120).