[Back to Detailed Agenda]
|
| Chairs: Josef Kellndorfer, Mark Chopping
|
Discussion Questions:
- What are the most pressing science questions/issues for Terrestrial Ecology, Biodiversity, and Applied Sciences that can be addressed through technology development? For which potential missions related to Terrestrial Ecology, Biodiversity, and Applied Sciences is technology development the limiting step? What types of technology investments are needed?
- How far do current NASA investments go toward meeting these needs?
- How can we improve interactions and collaborations with NASA's technology programs and participants?
|
|
|
|
--- Please forward any additional comments to the relevant Program Manager at NASA Headquarters. ---
|
Through their ability to make range resolved measurements lidars can be used to address compelling science questions however the reliability of current laser systems does not give one a high level of confidence that they will work as designed over a multi year period.
Programs such as the Laser Risk Reduction Program have made tremendous strides in this direction but additional work is still required.
Compact, efficient, light sources have been developed, both under Laser Risk and outside NASA by the telecommunications sector, that cover most of the spectral region from the UV out to ~10 microns.
Promising advances in solid-state detectors (such as InGaAs and HgCdTe APDs) have been made with important implications for laser size, weight and power requirements that ultimately also impact laser lifetime. These efforts will benefit not only the terrestrial ecology program but other NASA programs as well and as such should be paid for by NASA and not a specific program.
– submitted by John Burris at 2006-08-22 15:59:49 |
Thanks to all participants in our somewhat stream-of-consciousness session today -- our second session wil be more structured. Keep the comments coming.
– submitted by Mark Chopping at 2006-08-21 17:49:19 |
This is a very difficult question to answer. Most of the application scientists and many of the ecological scientists have yet to quantify the type (less of a problem) and requirements (accuracy, resolution, etc.). Without these bounding constraints it is not possible to make well assessments of the needed technologies. That being said some areas of technology that could use additional technology research include:
1.) In what sense are Lidar and radar (IFSAR, multi-baseline, multi-frequency) complimentary sensors?
2.) What is the appropriate metric for assessing 3-D structure measurement accuracy?
3.) How well do lidar/radar technologies achieve required accuracy relative to these metrics?
4.) How does temporal correlation affect 3-D structure measurements using radar? How does this vary with vegetation type, time of year, ground cover, local slope etc.
5.) What spatial and vertical scales are relevant for specific applications?
6.) Tools/equipment for more efficiently collect ground data for calibrations and allometric equation development?
7.) Multi-frequency lidar for separting various canopy components.
– submitted by Scott Hensley at 2006-08-21 17:38:23 |
This is a very difficult question to answer. Most of the application scientists and many of the ecological scientists have yet to quantify the type, less of a problem from a reachnology point of view, the requirements (accuracy, resolution, etc.). Without these bounding constraints it is not possible to make well assessments of the needed technologies. That being said some areas of technology that could use additional technology research include:
1.) In what sense are Lidar and radar (IFSAR, multi-baseline, multi-frequency) complimentary sensors?
2.) What is the appropriate metric for assessing 3-D structure measurement accuracy?
3.) How well do lidar/radar technologies achieve required accuracy relative to these metrics?
4.) How does temporal correlation affect 3-D structure measurements using radar? How does this vary with vegetation type, time of year, ground cover, local slope etc.
5.) What spatial and vertical scales are relevant for specific applications? What exact quantities are needed at these scales?
6.) Tools/equipment for more efficiently collect ground data for calibrations and allometric equation development?
– submitted by Scott Hensley at 2006-08-21 17:36:15 |
What no comments?
– submitted by Mark Chopping at 2006-08-21 17:35:28 |
Welcome! This is a test comment -- no need to respond. Thank you.
– submitted by Mark Chopping at 2006-08-21 15:33:43 |
|
|
|
+ QUESTIONS? CONTACT US
|
