BIGST TOPIC 07 LASER Questions and Answers

UNCLASSIFIED

Item Category

1 Technical

Questions
Phase 1 signatures and classification
scheme. What form will the Phase 1 3D
signatures and preliminary classification
scheme take: labeled ATL03 photon
subsets, point clouds (*.LAZ/*.XYZ),
derived feature tables, or source code?
Roughly how many objects and object
classes are included, split between
above-ground and subsurface? Do the
ground-truth records include object
position, height or least depth, and their
uncertainties? Can a data dictionary or
sample be released before proposals are
due?

Government Answers
Phase 1 signatures and classification scheme.
1A) What form will the Phase 1 3D signatures and
preliminary classification scheme take: labeled
ATL03 photon subsets, point clouds
(*.LAZ/*.XYZ), derived feature tables, or source
code? Very simple label classification will be provided for derived feature and prototype algorithms in python. The code would require refining.
1B) Roughly how many objects and object classes
are included, split between above-ground and
subsurface? For Phase 1 above-ground, we are
starting with 5- 11 feature types and for subsurface, 4 feature types. However, there are over 300 types of
interest for above-ground.
1C) Do the ground-truth records include object
position, height or least depth, and their
uncertainties? Lat/ long and height yes and baseline
uncertainty for ground truth sensor types/source

2 Technical

Allowed inputs. May offerors use
NASA's ATL24 near-shore bathymetry
product, along with ATL08 and ATL13,
as inputs or cross-checks alongside
SCuBA? Or should subsurface
processing rely only on ATL03 and
SCuBA? Will SCuBA be delivered as
source code (Python or MATLAB), and
can code derived from it be included in
deliverables provided with Government
Purpose Rights?

1D) Can a data dictionary or sample be released
before proposals are due? No
2A) Allowed inputs. May offerors use NASA's
ATL24 near-shore bathymetry product, along with
ATL08 and ATL13, as inputs or cross-checks
alongside SCuBA? Or should subsurface processing
rely only on ATL03 and SCuBA? ATL24 is only
available to 2024 and we are looking at new
coordinated collects requiring us to run SCuBA and
other algorithms. Depending on data latency of
ATL08/ ATL13 they may be applicable but ATL24 is
not. Note most of our AOIs will be new collects from
the space lidars so majority of the outputs would be