Part A | 28 marks
1. Using the unprocessed images, expand the image in SNAP so that you can see
the metadata folder. Using the Abstracted Metadata answer the following
questions:
a. Which satellite pass were the images acquired on? (2 marks)
b. What polarizations were acquired? (2 marks)
c. What times were the images acquired? (2 marks)
d. Open the VV-band of one unprocessed image in SNAP. What do you notice
about the image? Why is the image displayed this way? (3 marks)
e. On the left side of the image is Manuel Peak and the surrounding
mountains/hills. Based on this terrain, what is the look direction of the image?
How can you tell? (3 marks)
2. Open the VV-band of the processed image for February 2, 2021, and answer the
following questions:
a. Compare the Mackenzie River, Noell Lake, and Sitidgi Lake. Which water body
has the brightest returns? What differences would you expect between the
different water bodies based on the different returns? (4 marks)
b. The maximum temperature on February 2, 2021, was -25 î Would snow cover
impact the microwave return at C-band? Why or why not? (3 marks)
3. Open the VV-band of the processed image for June 14, 2021. Compare it to the
image for February 2 and answer the following questions:
a. What difference do you notice between the Mackenzie River in the two images?
What is responsible for this difference (both physical explanation and microwave
explanation) (3 marks)
b. How has the microwave response to lake ice cover on Noell Lake and Sitidgi
Lake changed between the two images? What is a possible explanation for this
change? (3 marks)
c. Hourly temperatures are >5 àon June 14 resulting in melting snow. How would
this impact the interaction between C-band signals and snow? (3 marks)
Part B | 14 marks
4. Upload a screenshot containing the unprocessed image as well as the five filtered
images that you created. Ensure that each image is properly labelled. (3 marks)
5. Zoom in to Toronto on the Sentinel-1 image. Answer the following questions
based on your observations.
a. Which filter does the best job at preserving the original appearance of the
Sentinel-1 image? Are there any drawbacks to selecting this filter? Use screenshots
of the images to support your answer. (4 marks)
b. Which filter does the best job at removing speckle from the Sentinel-1 image?
Are there any drawbacks to this filter? Use screenshots to support your answer. (4
marks)
c. If you wanted to use SAR imagery to identify smooth and rough areas (e.g.,
airports, built-up areas, etc.), which speckle filter would you select and why? (3
marks)
Part C | 15 marks
6. Upload a screenshot of your processing graph for the polarimetric
decomposition. (2 marks)
7. Consider these two areas in the image:
Downtown Washington DC
The National Mall
a) For each of the two areas, what appears to be the dominant scattering
mechanism? Support your answer with pixel values/observations from the
imagery. (5 marks)
b) Provide an explanation for why this is the dominant scattering mechanism in
each area. (5 marks)
c) What patterns do you notice in the scattering mechanisms for the entire image?
(3 marks)

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