Post by sage on Jan 24, 2022 18:29:41 GMT
I have been working on electro-optics stand in for Children of a dead earth, to see what the real range of Detection, Recognition, Identification and Targeting is. Right now I’m using a laser as a stand in with the lost power setting of 100 kw, regardless of size. And am trying to make is so that anyone can find there real range for Detection, Recognition, Identification and Targeting for any stand in that they designed.
Right now I have designed an electro-optics stand in that has the following specifications
Wavelength: 750 nm (Near Infrared)
Aperture Radius: 1.3 meters (or 1300mm)
Focal Length: 10.4 meters (or 10400 mm)
Which would give a focal ratio of 8
Form this info I need to find the Arc-Sec per Pixel, in order to find the range of Detection, Recognition, Identification, for any given target of some size.
To find the Arc-Sec per Pixel, I use the equation
Arc-Sec per pixel = (pixel size [microns] / Focal Length Scope [mm]) *206.3
This means I need to find the pixel size in microns, for an electro-optics system that has an aperture radius of 1300 mm, a focal length of 10400mm and needs to see a wavelength of 750 nm.
Here where I need help. In finding the right pixel size [microns] for this scope. I found an equation online for CCD Planetary Critical sampling that said
Focal Length is greater than or = ((aperture [mm] * pixel_size [microns]) / (Wavelength [nm] *1.22)) *3
And all I did was solve for a pixel_size that gave me a focal length of 10400mm
From that I got the Arc-sec per Pixel for my electro-optics system. But am not sure if this is the right way to find it.
Right now I have designed an electro-optics stand in that has the following specifications
Wavelength: 750 nm (Near Infrared)
Aperture Radius: 1.3 meters (or 1300mm)
Focal Length: 10.4 meters (or 10400 mm)
Which would give a focal ratio of 8
Form this info I need to find the Arc-Sec per Pixel, in order to find the range of Detection, Recognition, Identification, for any given target of some size.
To find the Arc-Sec per Pixel, I use the equation
Arc-Sec per pixel = (pixel size [microns] / Focal Length Scope [mm]) *206.3
This means I need to find the pixel size in microns, for an electro-optics system that has an aperture radius of 1300 mm, a focal length of 10400mm and needs to see a wavelength of 750 nm.
Here where I need help. In finding the right pixel size [microns] for this scope. I found an equation online for CCD Planetary Critical sampling that said
Focal Length is greater than or = ((aperture [mm] * pixel_size [microns]) / (Wavelength [nm] *1.22)) *3
And all I did was solve for a pixel_size that gave me a focal length of 10400mm
From that I got the Arc-sec per Pixel for my electro-optics system. But am not sure if this is the right way to find it.