CHRIS on PROBA
Question 1
Into what general category of EOS does the instrument fall?
Hyperspectral
Question 2
What capture technology is used?
Push-broom capture mode
Question 3
Is the sensor active or passive?
Passive
Question 4
At what wavelength(s) does the sensor function?
Chris is capable of operating between a wavelength of 410nm to 1050nm.
Question 5
What resolution does the sensor have – temporal and spatial?
Temporal
Approximately 7 day repeat
Spatial
Operates in 63 spectral bands at a spatial resolution of 18m, or with 18 bands at full spatial resolution
Question 6
Is the sensor carried on an airborne or spaceborne platform? What is that platform – typically?
CHRIS is carried onboard the satellite PROBA (Project for On Board Autonomy
Question 7
Who developed/launched/manages the sensor?
CHRIS was developed and constructed by a consortium led by the Belgian company Verhaert, the project was funded by the European Space Agency and is currently managed by the E.S.A
Question 8
Can data be purchased from service providers?
Yes From Esa
Question 9
What products are available?
CHRIS Level 1A products include five formal CHRIS imaging modes, classified as modes 1 to 5:
* MODE 1: Full swath width, 62 spectral bands, 773nm / 1036nm, nadir ground sampling distance 34m @ 556km
* MODE 2 WATER BANDS: Full swath width, 18 spectral bands, nadir ground sampling distance 17m @ 556km
* MODE 3 LAND CHANNELS: Full swath width, 18 spectral bands, nadir ground sampling distance 17m @ 556km
* MODE 4 CHLOROPHYL BAND SET: Full swath width, 18 spectral bands, nadir ground sampling distance 17m @ 556km
* MODE 5 LAND CHANNELS: Half swath width, 37 spectral bands, nadir ground sampling distance 17m @ 556km
Question 10
At which main application areas is the sensor aimed?
Agriculture, forestry and global change research
List 2 specific projects, where they have been reported, their goals and their outcomes.
Inspecting trees in Belgium
CHRIS's ability to retrieve hyperspectral and multi-angular data makes it especially useful for the study of vegetation cover on land. Francois Kayitakire of the University of Louvain's Water and Forest Unit in Belgium recounted research being carried out on the 10,000-hectare Nismes forest.
Looking at cotton crops in Australia
Ray Merton of the School of Biological, Earth and Environmental Sciences of the University of New South Wales in Australia explained how his team used CHRIS imagery as part of an investigation of how the reflectance properties of cotton might be used on an operational basis to estimate the crop's health, maturity and yield.
Comments (0)
You don't have permission to comment on this page.