- #1
ChrisKooij
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hey guys,
I'm in a serious pickle, its finals week and I have a final for remote sensing coming up. I was recently hit by a car riding my bike to school and have struggled studying for this final. I feel like I have a grasp on the main concepts of the course but am reaching out to any experts who might help me clarify some questions that I have.
1. My first question has to do with spatial resolution of images. obviously finer resolution images have a lot of benefits, but what are the benefits of coarse resolution imagery besides the lower amount of data? I remember my teacher talking about looking at tank tracks during the Persian Gulf War when he worked for the government. He said that the coarser resolution imagery was better for finding the tank positions along the border, WHY?
2. Please describe radiometric resolution. Why is having more a better thing? Compare the difference in radiometric resolution from the Landsat legacy sensors (4, 5, 7) to the new Landsat 8 sensor and describe in detail the differences between the two systems. What does the increase in radiometric resolution for Landsat 8 allow you to do differently regarding remote sensing applications
3. The last question is about resampling of imagery based on differences in resolution. I know that you should always resample based on the higher resolution imagery but I am having a hard time articulating exactly why.
<Mentor's note: Moved into General Physics due to the generality of the question, and the absence of qualities like specific equations to match our homework forum.>
I'm in a serious pickle, its finals week and I have a final for remote sensing coming up. I was recently hit by a car riding my bike to school and have struggled studying for this final. I feel like I have a grasp on the main concepts of the course but am reaching out to any experts who might help me clarify some questions that I have.
1. My first question has to do with spatial resolution of images. obviously finer resolution images have a lot of benefits, but what are the benefits of coarse resolution imagery besides the lower amount of data? I remember my teacher talking about looking at tank tracks during the Persian Gulf War when he worked for the government. He said that the coarser resolution imagery was better for finding the tank positions along the border, WHY?
2. Please describe radiometric resolution. Why is having more a better thing? Compare the difference in radiometric resolution from the Landsat legacy sensors (4, 5, 7) to the new Landsat 8 sensor and describe in detail the differences between the two systems. What does the increase in radiometric resolution for Landsat 8 allow you to do differently regarding remote sensing applications
3. The last question is about resampling of imagery based on differences in resolution. I know that you should always resample based on the higher resolution imagery but I am having a hard time articulating exactly why.
<Mentor's note: Moved into General Physics due to the generality of the question, and the absence of qualities like specific equations to match our homework forum.>
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