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001021642 0247_ $$2datacite_doi$$a10.34734/FZJ-2024-00899
001021642 037__ $$aFZJ-2024-00899
001021642 041__ $$aEnglish
001021642 1001_ $$0P:(DE-Juel1)171927$$aBekman, Ilja$$b0$$eCorresponding author$$ufzj
001021642 1112_ $$aJährliche Tagung der Studiengruppe ELEKTRONISCHE INSTRUMENTIERUNG 2023$$cKarlsruhe$$d2023-04-17 - 2023-04-19$$gSEI2023$$wGermany
001021642 245__ $$aClock synchronization for a multidevice data acquisition system of a ground penetrating radar
001021642 260__ $$c2023
001021642 3367_ $$033$$2EndNote$$aConference Paper
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001021642 520__ $$aAs part of the climate research, controlled environment facilities are deepening the knowledge of highly heterogeneous dynamic ecosystems centered around plants.In the context of climate change, it becomes even more important to study the impact of climate conditions on crops under realistic conditions using large scale laboratories.We develop a high resolution multi-channel ground penetrating radar (GPR) for a cylindrical lysimeter that is 1 m wide and 1.5 m tall. The GPR data is used to reconstruct a tomographic image of the soil and root system.The GPR design, production and commissioning is performed by the Central Institute of Engineering, Electronics and Analytics - Electronic Systems (ZEA-2) of the Forschungszentrum Juelich in Germany.The system is designed with 39 data acquisition (DAQ) units, one unit controls 64 radio frequency antennas and internally called the Baseboard (BAB), and a Master Module (MAM) used to concentrate the data and control the BABs.Prerequisite for a precise tomogram is an accurate synchronization of all data acquisition components and low-jitter clocking.Each BAB is equipped with the necessary clocking distribution, a Xilinx RFSoC providing the DAC and ADCs, and a separate antenna multiplexing FPGA.The layout of the lysimeter is such that the MAM is connected to 13 BABs arranged in a ring on the lowest layer, and each of these is connected to two additional BABs surrounding higher layers of the lysimeter.This combination of a star and chain topography provides a challenge for the clock synchronization and is discussed in this talk.The analysis of the first verification data is shown and the DAQ roadmap is outlined.
001021642 536__ $$0G:(DE-HGF)POF4-2173$$a2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217)$$cPOF4-217$$fPOF IV$$x0
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001021642 7001_ $$0P:(DE-Juel1)140421$$aMester, Achim$$b1$$ufzj
001021642 7001_ $$0P:(DE-Juel1)171480$$aRoth, Christian$$b2$$ufzj
001021642 7001_ $$0P:(DE-Juel1)133962$$aZimmermann, Egon$$b3$$ufzj
001021642 7001_ $$0P:(DE-Juel1)133933$$aSchardt, Georg$$b4$$ufzj
001021642 7001_ $$0P:(DE-Juel1)133931$$aRongen, Heinz$$b5$$ufzj
001021642 7001_ $$0P:(DE-Juel1)137027$$aHeggen, Johannes$$b6$$ufzj
001021642 7001_ $$0P:(DE-Juel1)133959$$aWüstner, Peter$$b7$$ufzj
001021642 7001_ $$0P:(DE-Juel1)145688$$aHeil, Roger$$b8$$ufzj
001021642 7001_ $$0P:(DE-Juel1)142562$$avan Waasen, Stefan$$b9$$ufzj
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