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Accuracy analysis of a mobile tracking system for angular position determination of flying targets

Walther, Andreas und Buske, Ivo und Riede, Wolfgang (2016) Accuracy analysis of a mobile tracking system for angular position determination of flying targets. In: Proceedings of SPIE - The International Society for Optical Engineering, 9989, 99890T-99890T. SPIE Remote Sensing and Security + Defence, 26.-29. Sep. 2016, Edinburgh, Schottland, UK. doi: 10.1117/12.2241211.

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Offizielle URL: http://dx.doi.org/10.1117/12.2241211

Kurzfassung

Lasers arouse an increasing interest in remote sensing applications. In order to deliver as much as possible of the available laser power onto a flying object the subsystems of a beam control system have to operate precisely together. One important subsystem is responsible for determination of the target’s angular position. Here, we focus on an optical system for measuring precisely the angular position of flying objects. We designed this subunit of a beam control system exclusively from readily available commercial-off-the-shelf components. Two industrial cameras were used for angle measuring and for guiding the system to the position of the flying object. Both cameras are mounted on a modified astronomical mount with high-precision angle encoders. To achieve a high accuracy we temporally synchronize the acquisition of the angle from the pan tilt unit with the exposure of the camera. Therefore, a FPGA-based readout device for the rotary encoders was designed and implemented. Additionally, we determined and evaluated the influence of the distortion of the lenses to the measurement. We investigated various scenarios to determine the accuracy and the limitations of our system for angular position determination of flying targets. Performance tests were taken indoor and outdoor at our test sites. A target can be mounted on a fast moving linear stage. The position of this linear stage is continuously read out by a high resolution encoder so we know the target’s position with a dynamic accuracy in the range of a few μm. With this setup we evaluated the spatial resolution of our tracking system. We showed that the presented system can determine the angular position of fast flying objects with an uncertainty of only 2 μrad RMS. With this mobile tracking system for angular position determination of flying targets we designed an accurate cost-efficient opportunity for further developments.

elib-URL des Eintrags:https://elib.dlr.de/108267/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Accuracy analysis of a mobile tracking system for angular position determination of flying targets
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Walther, AndreasAndreas.Walther (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Buske, Ivoivo.buske (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Riede, WolfgangNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:26 September 2016
Erschienen in:Proceedings of SPIE - The International Society for Optical Engineering
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Nein
Band:9989
DOI:10.1117/12.2241211
Seitenbereich:99890T-99890T
Name der Reihe:Technologies for Optical Countermeasures XIII
Status:veröffentlicht
Stichwörter:Position determination, accuracy, tracking, visual servoing, UAS observation, pan tilt camera
Veranstaltungstitel:SPIE Remote Sensing and Security + Defence
Veranstaltungsort:Edinburgh, Schottland, UK
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:26.-29. Sep. 2016
Veranstalter :SPIE
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Laserforschung und Technologie (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Physik
Hinterlegt von: Walther, Dipl.-Ing. Andreas
Hinterlegt am:01 Dez 2016 13:04
Letzte Änderung:05 Dez 2018 12:28

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