Question

What Analytical Approaches Can Be Used to Evaluate Equivalent System Performance in Sequential and Non-Sequential Modes


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This discussion presents methods for evaluating equivalent system performance in sequential and non-sequential modes. The key areas covered include Surface/Object Face Sag Maps, GEO MTF, and spot sizes, with corresponding pathway settings detailed below:

  1. Compare Surface/Object face Sag Map
    Configuration steps:  
    SEQ:  The Analyze Tab (sequential ui mode) » Polarization and Surface Physics Group (the analyze tab, sequential ui mode) » Surface » Surface 
    NSC: The Analyze Tab (non-sequential ui mode) » Polarization and Surface Physics Group (the analyze tab, non-sequential ui mode) » NSC Surface Sag 
     

  2. Compare GEO MTF (Geometrical Modulation Transfer Function) for non-diffraction-limited aberrated systems
    Configuration steps:  
    SEQ: The Analyze Tab (sequential ui mode) » Image Quality Group » MTF » Geometric MTF 
    NSC: The Analyze Tab (non-sequential ui mode) » Image Quality Group (non-sequential) » NSC Geometric MTF. 
     

  3. Compare spot sizes 
    Configuration steps:  
    SEQ: To match the NSC mode, the spot must be referenced to "Centroid," not a chief ray. The Ray Density in the spot diagram can be up to 200.  
    NSC: NSDD operand(All pixel distance and angle data referenced with respect to the centroid for the weighted RMS radius);  
    or ‘The Analyze Tab (non-sequential ui mode) » Detectors Group » Detector Viewer> Beam Info,’ when the viewer is looking at data from a Detector Rectangle or Detector Color object. 
    P.S.: The aberrated and diffraction-limited systems are both around 5% dimension off.
     

  4. Compare Irradiance plot 
    Configuration steps:  
    SEQ: The Analyze Tab (sequential ui mode) » Image Quality Group » Extended Scene Analysis » Geometric Image Analysis 
    NSC: The Analyze Tab (non-sequential ui mode) » Detectors Group » Detector Viewer » Incoherent Irradiance 

P.S.:  


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