TY  - RPRT
TI  - Passive imaging based hazard avoidance for spacecraft safe landing
AU  - Cheng, Y.
AU  - Johnson, A. E.
AU  - Mattheis, L. H.
AU  - Wolf, A. A.
PY  - 2001
UR  - https://ntrs.nasa.gov/citations/20060031528
ID  - 20060031528
ER  -