Major spaceborne remote sensing Flashcards
What was the landsat’s primary mission?
To map earth’s terrestrial and coastal area
What was the temporal solution of landsat?
16 days
What is the spatial resolution of landsat?
30m
What were the improvements made to landsat data over time?
Spatial resolution and number of wavebands
increased
What are the advantages of Landsat sensor?
Landsat sensors have similar spectral wavelengths
Allows long-term time series analysis
You can use data from all the landsat together, especially useful to monitor changes on the land’s surface
What is sentinel 1?
An active sensor from the ESA used in all weather
What does MSI (on sentinel 2) stand for?
Multispectral imager
What is the spatial resolution of sentinel 2?
10,20 and 60m
What is the field of view for sentinel 2?
290km
What is the temporal resolution of sentinel 2?
5 days with 2 satellites
What are cubesats?
Miniature satellites that were developed by companies such as planet ltd
They are the size of a shoebox
Why are cubesats cheaper to launch?
Multiple satellites are released at the same time
What is the spatial resolution of cubesats?
3-5m
What (and how many) spectral bands are involved in cubesats?
4 or 8 spectral bands- blue, green, red and NIR
What is the image swath of cubesats?
32 x 20 km
