This question is on the logical side.
As we all know the orbital path of all the imaging satellites like liss and landsat are elliptical in shape.
This means that the height at every instance will vary of the satellite with respect to earth surface. This should cause difference in scale at every instance.
But still every image in different time instance have the same scale. For example 2 images are taken in different time period of the same area but both the images are 60 square kilometer. Since the height is varying the dimensions of the image should be different every time.
How is this achieved?
How does satellite manage to take image without losing the focus?
Is there a hardware on the satellite which adjusts the scale according to the height?
أكثر...
As we all know the orbital path of all the imaging satellites like liss and landsat are elliptical in shape.
This means that the height at every instance will vary of the satellite with respect to earth surface. This should cause difference in scale at every instance.
But still every image in different time instance have the same scale. For example 2 images are taken in different time period of the same area but both the images are 60 square kilometer. Since the height is varying the dimensions of the image should be different every time.
How is this achieved?
How does satellite manage to take image without losing the focus?
Is there a hardware on the satellite which adjusts the scale according to the height?
أكثر...