dc.contributor.authorLi, Bing-Xuan
dc.contributor.authorHan, Bo
dc.contributor.authorLim, Wee Seng
dc.contributor.authorTsai, Yung-Fu
dc.contributor.authorLow, Kay-Soon
dc.date.accessioned2017-12-08T05:00:54Z
dc.date.available2017-12-08T05:00:54Z
dc.date.issued2017
dc.identifier.citationLi, B.-X., Han, B., Lim, W. S., Tsai, Y.-F., & Low, K.-S. (2017). Performance Assessment of the Radio Occultation Experiment for Commercial off-the-shelf Receivers on VELOX-CI Microsatellite. The 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), 1669-1677.en_US
dc.identifier.urihttp://hdl.handle.net/10220/44109
dc.description.abstractVELOX-CI is the second micro satellite of Satellite Research Center (SaRC) in Nanyang Technological University [1-2]. Since its launch on Dec. 16, 2015, VELOX-CI has performed a total of 136 radio occultation (RO) missions, and collected 448 hours’ GPS data with the lowest penetration altitude of 6 km. In this paper the radio occultation performance of the VELOX-CI’s COTS receiver and the space-borne receivers are compared in the upper troposphere (10~60km) in tropical region (latitude between 30°N and 30°S). VELOX-CI is designed to explore the potential of using the commercial-off-the-shelf (COTS) GPS receivers for RO mission for the first time. The satellite has a near equatorial orbit with an altitude of 550km. Three GPS antennas are located at the zenith, forward-velocity, and after-velocity directions. The tracked GPS signal phase, carrier-to-noise ratio C/N_0 are stored and sent to ground for post processing. The ionospheric profiles and preliminary tropospheric profiles are presented previously in [3]. In this paper, the VELOX-CI’s GPS RO payload is described. The RO data inversion procedures are introduced and a refractivity profile comparison study is made for refractive index obtained with VELOX-CI RO, radiosonde measurements and COSMIC data.en_US
dc.description.sponsorshipEDB (Economic Devt. Board, S’pore)en_US
dc.format.extent9 p.
dc.language.isoenen_US
dc.rights© 2017 Institute of Navigation (ION). This paper was published in The 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017) and is made available as an electronic reprint (preprint) with permission of Institute of Navigation. The published version is available at: [https://www.ion.org/gnss/abstracts.cfm?paperID=5510]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectRadio Occultationen_US
dc.subjectVELOX-CIen_US
dc.titlePerformance Assessment of the Radio Occultation Experiment for Commercial off-the-shelf Receivers on VELOX-CI Microsatelliteen_US
dc.typeConference Paper
dc.contributor.conferenceThe 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017)en_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.description.versionPublished version
dc.contributor.organizationSatellite Research Centreen_US
dc.identifier.urlhttps://www.ion.org/gnss/abstracts.cfm?paperID=5510


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