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Proceedings Paper

Single photon lidar demonstrator for asteroid rendezvous missions
Author(s): Michael Vacek; Vojtech Michalek; Marek Peca; Ivan Prochazka; Josef Blazej; Goran Djurovic
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Paper Abstract

We present compact single photon lidar demonstrator dedicated for asteroid rendezvous missions. The instrument provides crucial data on altitude and terrain profile for altitudes exceeding 5km with a precision of less than 10 cm fulfilling the Rayleigh criterion. Transmitter and receiver optics designs are discussed, control and processing electronics based on a single rad-hard compatible FPGA (Field Programmable Gate Array) is analyzed. The FPGA electronics subsystems are TDC (Time-to-Digit Converter), laser trigger pulse generator and gate generator. Indoor calibration procedures of the whole demonstrator chain are proposed and evaluated. The calibration covers positioning of receiver and transmitter optics related to detector and laser, aligning of transmitter and receiver optical common paths. The retrieving strategy of terrain elevation profile is proposed and via indoor tests validated. Theory for surface slope and scanning is established, simulation and measurement results are compared and discussed.

Paper Details

Date Published: 6 January 2015
PDF: 11 pages
Proc. SPIE 9450, Photonics, Devices, and Systems VI, 945007 (6 January 2015); doi: 10.1117/12.2070323
Show Author Affiliations
Michael Vacek, Czech Technical Univ. in Prague (Czech Republic)
Vojtech Michalek, Czech Technical Univ. in Prague (Czech Republic)
Marek Peca, Czech Technical Univ. in Prague (Czech Republic)
Ivan Prochazka, Czech Technical Univ. in Prague (Czech Republic)
Josef Blazej, Czech Technical Univ. in Prague (Czech Republic)
Goran Djurovic, Czech Technical Univ. in Prague (Czech Republic)

Published in SPIE Proceedings Vol. 9450:
Photonics, Devices, and Systems VI
Pavel Tománek; Dagmar Senderáková; Petr Páta, Editor(s)

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