Alan A. Vetter

Tackling the Challenges of Adding Pulse-level Support to a Heterogeneous HPCQC Software Stack

Jorge Echavarria, Muhammad Nufail Farooqi, Amit Devra, Santana Lujan et autres

We study the problem of adding native pulse-level control to heterogeneous High Performance Computing-Quantum Computing (HPCQC) software stacks, using the Munich Quantum Software Stack (MQSS) as a case study. The goal is to expand the capabilities of HPCQC environments by offering the …

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The AirStar-a precision GPS parallel swath guidance and tracking system

W. Falkenberg, Joseph R. Hartt, Alan A. Vetter

Aerial spraying from aircraft for agricultural and forestry applications is a multi-million dollar business. Until very recently, the pilots have been forced to rely on human flaggers or more expensive and less accurate techniques for positioning the aircraft (e.g. Loran-C). With the …

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Quantitative Evaluation of DGPS Guidance for Aerial Agricultural Applications

Alan A. Vetter

The Global Positioning System (GPS) satellites provide positioning information which can be of significant use to agricultural aviation applicators. This article presents the results of a quantitative evaluation of the precision of agricultural aviation aircraft to be guided along swaths with a …

Dual use of the laser centerline localizer

Alan A. Vetter, David M. Shemwell

The Laser Centerline Localizer (LCL) uses a series of low power, but highly visible laser beams to illuminate approach corridors to provide a pilot on final approach to landing with precise centerline guidance. The LCL was initially developed for aircraft carrier flight …

Quantitative Evaluation of DGPS Guidance for Ground-based Agricultural Applications

Alan A. Vetter

The Global Positioning System (GPS) satellites provide positioning information which can be of significant use for agricultural applicators. This article presents the results of a quantitative evaluation of the precision of a commercial device which incorporates differentially corrected GPS signals (DGPS) to …

Scanning laser aircraft surveillance system for carrier flight operations

Alan A. Vetter, David M. Shemwell, Robert I. Gellert, Jerry G. Black

The Scanning Laser Aircraft Surveillance System (SLASS) uses two scanning infrared laser beams to illuminate retroreflectors located on aircraft landing gears and hook to determine very precisely the azimuthal, ascension, yaw, roll, and pitch angles of the aircraft in the approach corridor. …

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Laser centerline localizer and laser glideslope indicator for visual guidance on approach to landing

David M. Shemwell, Alan A. Vetter, Robert I. Gellert

The Laser Centerline Localizer (LCL) and the laser Glideslope Indicator (LGI) use a series of low power, but highly visible laser beams to illuminate approach corridors for carrier flight operations. By taking advantage of the ability to precisely shape and direct visible …

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Precision visual guidance for agricultural applicator aircraft

Joseph R. Hartt, F. R. Bletzacker, T. J. Forgette, Alan A. Vetter

The in-cockpit swath centerline identifier (SCI) for aerial applicators uses differentially corrected global positioning system (GPS) signals to determine precise ground track of an aircraft and provide guidance to the pilot for flying patterns for aerial application of materials such as pesticides, …

Measurement of asteroid diameter and albedos with a laser pulse

Alan A. Vetter

Illumination of asteroids with a pulsed laser provides a model-independent measurement of asteroid diameters. Due to the depth from the subearth point to the limb of the asteroid, the return pulse is spread in time. The signal duration is twice the maximum …

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