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Fixed-pattern noise impact on pilotage sensor performance.

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    Dynamic minimum resolvable temperature (DMRT) testing simulates how fixed-pattern noise (FPN) affects pilotage performance. This study quantifies FPN impact on pilotage optical flow fields during simulated helicopter flights at varying speeds and altitudes.

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    Area of Science:

    • Electro-optical sensor performance analysis
    • Image processing for remote sensing
    • Human-computer interaction in aviation

    Background:

    • Fixed-pattern noise (FPN) and temporal noise (TN) degrade electro-optical sensor performance.
    • Pilotage performance is directly impacted by sensor noise, especially during dynamic scenarios.
    • Dynamic Minimum Resolvable Temperature (DMRT) testing is a key metric for assessing sensor noise effects.

    Purpose of the Study:

    • To simulate and measure dynamic MRT (DMRT) results based on target velocity.
    • To determine how apparent object motion, influenced by sensor noise, affects pilotage.
    • To predict the impact of FPN on pilotage optical flow fields.

    Main Methods:

    • Utilized simulation to analyze DMRT as a function of target velocity.
    • Employed the Recurrent All-Pairs Field Transforms (RAfTs) model to measure optical flow.
    • Quantified apparent object speeds from imagery of high-speed nap-of-the-earth and slow, high-altitude helicopter flights.
    • Applied FPN impact from DMRT tests to the pilotage optical flow field.

    Main Results:

    • The study quantified the distribution of apparent object speeds during different flight scenarios.
    • The impact of FPN on pilotage optical flow was successfully simulated and analyzed.
    • Apparent motion significantly influences the degradation of pilotage performance due to FPN.

    Conclusions:

    • Simulated DMRT testing effectively predicts the impact of FPN on pilotage performance.
    • Understanding apparent motion in optical flow fields is crucial for mitigating sensor noise effects.
    • This research provides a method for assessing sensor noise impact in dynamic operational environments.