Ms. Anna Hecht Gnacek Profile

Anna Hecht Gnacek

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Publications (6)

SPIE Journal Paper | 10 August 2024 Open Access

Toward standardized testing of automotive lidars: year two results

Theus Aspiras, Vijayan Asari, Cullen Bradley, Anna Gnacek, Charlie Kershner, Daniel LeMaster, Paul McManamon, Andrew Reinhardt, Eddie Ruff, Christopher Valenta, Andre Van Rynbach

OE, Vol. 63, Issue 08, 085102, (August 2024) https://doi.org/10.1117/12.10.1117/1.OE.63.8.085102

KEYWORDS: LIDAR, Fiber optic gyroscopes, Standards development, Roads, Reflectivity, Laser safety, Safety, Optical engineering, Target detection, Point clouds

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Proceedings Article | 5 June 2024 Presentation + Paper

Development of a beam steering device for LiDAR-based spacecraft hazard avoidance and landing missions

Anna Gnacek, Paul McManamon, Eddie Ruff, Alexander Cain, Farzin Amzajerdian

Proceedings Volume 13049, 130490N (2024) https://doi.org/10.1117/12.3022637

KEYWORDS: Beam steering, LIDAR, Prisms, Optical components, Lenses, Space operations

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Proceedings Article | 5 June 2024 Presentation + Paper

Characterization of discrete amplification photon detector (DAPD) for long-range LiDAR applications

Ming Wei, Cullen Bradley, Anna Gnacek, Andrew Sarangan, Paul McManamon

Proceedings Volume 13049, 130490M (2024) https://doi.org/10.1117/12.3013526

KEYWORDS: Sensors, LIDAR, Signal detection, Photodetectors, Background noise, Dark current, Avalanche photodetectors, Pulse signals, Pulsed laser operation, Negative feedback

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SPIE Journal Paper | 5 August 2021 Open Access

Toward snapshot correction of 3D flash LiDAR imagers

Andrew Reinhardt, Cullen Bradley, Anna Hecht, Paul McManamon

OE, Vol. 60, Issue 08, 083101, (August 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.8.083101

KEYWORDS: 3D image processing, Imaging systems, LIDAR, Nonuniformity corrections, 3D acquisition, Photons, Image filtering, Image processing, Cameras, Sensors

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Proceedings Article | 12 April 2021 Presentation + Paper

Thermal drift compensation in dark-frame non-uniformity correction for an InGaAs PIN 3D flash lidar camera

Anna Hecht, Andrew Reinhardt, Cullen Bradley, Paul McManamon

Proceedings Volume 11744, 117440B (2021) https://doi.org/10.1117/12.2585794

KEYWORDS: Nonuniformity corrections, Cameras, LIDAR, Indium gallium arsenide, Stereoscopic cameras, Pulsed laser operation, PIN photodiodes, Calibration, Unmanned vehicles, Thermoelectric materials

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SPIE Journal Paper | 18 February 2021 Open Access

Windowed region-of-interest non-uniformity correction and range walk error correction of a 3D flash LiDAR camera

Andrew Reinhardt, Cullen Bradley, Anna Hecht, Paul McManamon

OE, Vol. 60, Issue 02, 023103, (February 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.2.023103

KEYWORDS: Cameras, Nonuniformity corrections, LIDAR, Staring arrays, Stereoscopic cameras, Sensors, Pulsed laser operation, Data corrections, Optical engineering, Error analysis

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