Vision-aided inertial navigation for spacecraft entry, descent, and landing
In this paper, we present the vision-aided inertial navigation (VISINAV) algorithm that
enables precision planetary landing. The vision front-end of the VISINAV system extracts 2 …
enables precision planetary landing. The vision front-end of the VISINAV system extracts 2 …
Terrain aided planetary UAV localization based on geo-referencing
X Wan, Y Shao, S Zhang, S Li - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
The autonomous real-time optical navigation of planetary unmanned aerial vehicle (UAV) is
of the key technologies to ensure the success of the exploration. In such a GPS-denied …
of the key technologies to ensure the success of the exploration. In such a GPS-denied …
System and method for super-resolution digital time delay and integrate (TDI) image processing
TJ Grycewicz - US Patent 8,558,899, 2013 - Google Patents
Super-resolution time delay and integrate (TDI) imaging pro cessing and systems for
providing same utilize imaging geometry configured such that a predictable Sub-pixel com …
providing same utilize imaging geometry configured such that a predictable Sub-pixel com …
Satellite angular velocity estimation based on star images and optical flow techniques
An optical flow-based technique is proposed to estimate spacecraft angular velocity based
on sequences of star-field images. It does not require star identification and can be thus …
on sequences of star-field images. It does not require star identification and can be thus …
Biomimetic optic flow sensing applied to a lunar landing scenario
Autonomous landing on unknown extraterrestrial bodies requires fast, noise-resistant motion
processing to elicit appropriate steering commands. Flying insects excellently master visual …
processing to elicit appropriate steering commands. Flying insects excellently master visual …
Constant-optic-flow lunar landing: Optimality and guidance
INSECT flight has been a profound source of inspiration to engineers for the development of
lightweight robust guidance and navigation architectures for flying vehicles. Recent research …
lightweight robust guidance and navigation architectures for flying vehicles. Recent research …
Methods for estimating peak location on a sampled surface with improved accuracy and applications to image correlation and registration
TJ Grycewicz - US Patent 8,306,274, 2012 - Google Patents
Methods and systems for estimating peak location on a sampled surface (eg, a correlation
surface generated from pixilated images) utilize one or more processing techniques to …
surface generated from pixilated images) utilize one or more processing techniques to …
Visual–inertial navigation for pinpoint planetary landing using scale-based landmark matching
Landing an autonomous spacecraft within 100 m of a mapped target is a navigation
challenge in planetary exploration. Vision-based approaches attempt to pair 2D features …
challenge in planetary exploration. Vision-based approaches attempt to pair 2D features …
Vision-aided inertial navigation for planetary landing without feature extraction and matching
In this paper, a vision-aided inertial navigation method for planetary landing based on the
direct method is proposed. This approach requires only a monocular camera and an inertial …
direct method is proposed. This approach requires only a monocular camera and an inertial …
Imaging geometries for scanning optical detectors with overlapping fields of regard and methods for providing and utilizing same
TJ Grycewicz - US Patent 8,368,774, 2013 - Google Patents
Imaging devices and techniques that utilize multiple optical detectors are described and, in
particular, imaging geometries for imaging devices that include three or more optical …
particular, imaging geometries for imaging devices that include three or more optical …