Time-to-Digit Converter Based on radiation-tolerant FPGA

Peca, Marek; Vacek, Michael; Michálek, Vojtěch

doi:10.1109/eftf.2012.6502384

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…The travel time is the simple difference of these two epochs; the closest pair of laser&detector event epochs is taken. The TDC is based on radiation-tolerant field-programmable gate array (FPGA) with resolution better than 50 ps standard deviation (Peca et al, 2012). Along with the TDC, the FPGA incorporates also the gate signal and laser trigger generators.…”

Section: Single Photon Altimeter Breadboardmentioning

confidence: 99%

Single photon laser altimeter data processing, analysis and experimental validation

Vacek

Peca

Michálek

et al. 2015

Advances in Space Research

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Section: Single Photon Altimeter Breadboardmentioning

confidence: 99%

Single photon laser altimeter data processing, analysis and experimental validation

Vacek

Peca

Michálek

et al. 2015

Advances in Space Research

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“…The TDC is based on radiation-resistant field field-programmable gate array (FPGA) with resolution better than 50ps STD. 5 Along with the TDC, the FPGA incorporates also the gate signal and laser trigger generator. The data processing unit (DPU) executes a single photon altimeter operation algorithm.…”

Section: Single Photon Altimeter Conceptmentioning

confidence: 99%

Photon counting Lidar for deep space applications: concept and simulator

et al. 2013

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The paper presents the concept and preliminary design of a single photon counting laser altimeter (lidar) dedicated for deep space rendezvous missions towards an asteroid. Overall estimated device weight and volume should not exceed 2 kg and 2 dm 2 with the power consumption below 20 W. The altimeter range evaluation precision should be on the order of 5 cm. A complex software simulator of the entire laser ranging and photon counting link has been developed and verified. The simulator framework incorporates both the three-dimensional spacecraft flight mechanics and topographical maps of the surface. Altimeter performance metrics are proposed and evaluated considering the topographical surface slope, environmental conditions, footprint coverage, gate range settings, and spacecraft-to-asteroid range and velocity. The asteroid topographical mapping and landing scenarios are discussed; specific spacecraft-to-asteroid approach phases are simulated and range reading maximum repetition rate is determined for each operation phase. Photon counting approach enables additional functions to laser altimetry, namely the one way laser ranging and laser time transfers over interplanetary distances and absolute radiometry at the laser wavelength.

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