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Laan, E.C. (author), Esposito, M. (author), Monna, B. (author), Silvio Conticello, S. (author), Stelwagen, F. (author), Theil, S. (author), Steffes, S. (author), Dumke, M. (author), Heise, D. (author), Sagliano, M. (author), Oosterling, J.A.J. (author), Nijkerk, M.D. (author), Duivenvoorde, T. (author), Berkhout, J. (author), Yanson, Y. (author), Schulte, J. (author), Skaborn, D. (author), Durkut, M. (author), Söderholm, S. (author), Samaan, M.A. (author), Visee, R. (author)SINPLEX is a sensor suite for spacecraft navigation purposes. This paper addresses the current status of the SINPLEX prototype and the systems engineering process that has led to this status. The SINPLEX prototype is currently being integrated with the aim to demonstrate Technology Readiness Level 4, i.e. a component and/or breadboard validation...conference paper 2013
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van Harten, G. (author), Snik, F. (author), Rietjens, J.H.H. (author), Smit, J.M. (author), de Boer, J. (author), Diamantopoulou, R. (author), Hasekamp, O.P. (author), Stam, D.M. (author), Keller, C.U. (author), Laan, E.C. (author), Verlaan, A.L. (author), Vliegenthart, W.A. (author), ter Horst, R. (author), Navarro, R. (author), Wielinga, K. (author), Hannemann, S. (author), Moon, S.G. (author), Voors, R. (author)We present the Spectropolarimeter for Planetary EXploration (SPEX), a high-accuracy linear spectropolarimeter measuring from 400 to 800 nm (with 2 nm intensity resolution), that is compact (~ 1 liter), robust and lightweight. This is achieved by employing the unconventional spectral polarization modulation technique, optimized for linear...conference paper 2011
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Voors, R. (author), Moon, S.G. (author), Hannemann, S. (author), Rietjens, J.H.H. (author), van Harten, G. (author), Snik, F. (author), Smit, M. (author), Stam, D.M. (author), Keller, C.U. (author), Laan, E.C. (author), Verlaan, A.L. (author), Vliegenthart, W.A. (author), ter Horst, R. (author), Navarro, R. (author), Wielinga, K. (author)SPEX (Spectropolarimeter for Planetary Exploration) was developed in close cooperation between scientific institutes and space technological industries in the Netherlands. It is used for measuring microphysical properties of aerosols and cloud particles in planetary atmospheres. SPEX utilizes a number of novel ideas. The key feature is that full...conference paper 2011
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Sandtke, M. (author), Laan, E.C. (author), Ahlers, B. (author), TNO Industrie en Techniek (author)TNO has developed the combination of two spectroscopic analysis methods in one instrument. Raman spectroscopy and Laser-induced Breakdown Spectroscopy (LIBS) were brought together for an instrument to be flown on the ExoMars mission from the European Space Agency (ESA) to investigate the Martian (sub-)surface by in-situ measurements. The...conference paper 2010
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Gill, E. (author), Maessen, D. (author), Laan, E.C. (author), Kraft, S. (author), Zheng, G. (author), TNO Industrie en Techniek (author)Large current uncertainties in the characteristics of aerosols in the Earth's atmosphere preclude meaningful climate model evaluation. The FAST mission will contribute to the characterization of aerosols and their relation to climate change through a synoptic evaluation of local, regional and global aerosol data and altitude profiles of the...article 2010
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Rieetjens, J.H.H. (author), Snik, F. (author), Stam, D.M. (author), Smit, J.M. (author), van Harten, G. (author), Keller, C.U. (author), Verlaan, A.L. (author), Laan, E.C. (author), ter Horst, R. (author), Navarro, R. (author), Wielinga, K. (author), Moon, S.G. (author), Voors, R. (author), TNO Industrie en Techniek (author)We present SPEX, the Spectropolarimeter for Planetary Exploration, which is a compact, robust and low-mass spectropolarimeter designed to operate from an orbiting or in situ platform. Its purpose is to simultaneously measure the radiance and the state (degree and angle) of linear polarization of sunlight that has been scattered in a planetary...conference paper 2010
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Snik, F. (author), Rietjens, J.H.H. (author), van Harten, G. (author), Stam, D.M. (author), Keller, C.U. (author), Smit, J.M. (author), Laan, E.C. (author), Verlaan, A.L. (author), ter Horst, R. (author), Navarro, R. (author), Wielinga, K. (author), Moon, S.G. (author), Voors, R. (author)SPEX (Spectropolarimeter for Planetary EXploration) is an innovative, compact instrument for spectropolarimetry, and in particular for detecting and characterizing aerosols in planetary atmospheres. With its ∼1-liter volume it is capable of full linear spectropolarimetry, without moving parts. The degree and angle of linear polarization of the...conference paper 2010
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Laan, E.C. (author), Volten, H. (author), Stam, D.M. (author), Muñoz, O. (author), Hovenier, J.W. (author), Roush, T.L. (author), TNO Industrie en Techniek (author)We present measurements of ratios of elements of the scattering matrix of martian analogue palagonite particles for scattering angles ranging from 3° to 174° and a wavelength of 632.8 nm. To facilitate the use of these measurements in radiative transfer calculations we have devised a method that enables us to obtain, from these measurements, a...article 2009
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TNO Industrie en Techniek (author), Laan, E.C. (author), Ahlers, B. (author), Westrenen, W.V. (author), Heiligers, J. (author), Wielders, A. (author)Moon4You is a project led by the Dutch Organisation for Applied Scientific Research TNO, with partners from industry and universities in the Netherlands that aims to provide a combined Raman/LIBS instrument as scientific payload for lunar exploration missions. It is the first time that Raman spectroscopy and LIBS (Laser Induced Breakdown...conference paper 2009
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TNO Industrie en Techniek (author), Vries, J.de (author), Laan, E.C. (author), Hoogeveen, R.W.M. (author), Jongma, R.T. (author), Aben, U. (author), Visser, H. (author), Boslooper, E.C. (author), Saari, H. (author), Dobber, M.R. (author), Veefkind, J.P. (author), Kleipool, Q. (author), Levelt, P.F. (author)TROPOMI is a nadir-viewing grating-based imaging spectrograph in the line of OMI and SCIAMACHY. TROPOMI is part of the ESA Candidate Core Explorer Mission proposal TRAQ and also of the CAMEO satellite proposed for the US NRC decadal study. A TROPOMI-like instrument is part of the ESA/EU Sentinel 4&5 pre-phase A studies. TROPOMI covers the OMI...conference paper 2007
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de Vries, J. (author), Laan, E.C. (author), Levelt, P.F. (author), van den Oord, G.H.J. (author), Veefkind, J.P. (author), Dobber, M.R. (author), Aben, I. (author), Jongma, R.T. (author), Escudero-Sanz, I. (author), Court, A.J. (author), TNO Industrie en Techniek (author)The Ozone Monitoring Instrument (OMI) on NASA's AURA satellite is one of the first instruments measuring an extensive set of daily air quality parameters from space. This anwers to a growing interest in obtaining space data for the air we breath next to the higher altitude air masses. OMI combines UV-Visible nadir viewing spectroscopy, small...conference paper 2006
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TNO Industrie en Techniek (author), de Vries, J. (author), Laan, E.C. (author), Deutz, A.F. (author), Escudero-Sanz, I. (author), Bokhove, H. (author), Hoegee, J. (author), Aben, I. (author), Jongma, R. (author), Landgraf, J. (author), Hasekamp, O.P. (author), Houweling, S. (author), van Weele, M. (author), van Oss, R. (author), van den Oord, G. (author), Levelt, P. (author)Several organizations in the Netherlands are cooperating to develop user requirements and instrument concepts in the line of SCIAMACHY and OMI but with an increased focus on measuring tropospheric constituents from space. The concepts use passive spectroscopy in dedicated wavelength sections in the range of 300 to 2400 nm and wide angle, non...conference paper 2005