{"title":"MULTI-GNSS receivers/IMU system aimed at the design of a heading-constrained Tightly-Coupled algorithm","authors":"Gianluca Falco, María Campo-Cossio, Alberto Puras","doi":"10.1109/ICL-GNSS.2013.6577263","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2013.6577263","url":null,"abstract":"This paper presents the design of a truly low-cost multi-GNSS receivers /IMU navigation system that exploits the benefits of GNSS technology in attitude determination. The sensor package of the system consists of 4 single chipset receivers, 4 antennas, and one low grade MEMS IMU. Both parts, the GNSS and the IMU ones, are integrated by following a heading-constrained Tightly-Coupled approach, where inertial and GNSS raw measurements as well as GNSS computed heading are blended into an Extended Kalman Filter. To compute the attitude solution based on GNSS carrier phase measurements an integer ambiguity resolution algorithm has been developed, which takes advantage of the a priori solution of the EKF to reduce the search space and to provide an on-the-fly solution. The heading-constrained Tightly-Coupled approach followed in this paper has shown superior attitude accuracies when compared to the regular Tightly-Coupled implementation.","PeriodicalId":113867,"journal":{"name":"2013 International Conference on Localization and GNSS (ICL-GNSS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121321611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Code and frequency estimation in Galileo mass market receivers","authors":"N. Linty, P. Crosta","doi":"10.1109/ICL-GNSS.2013.6577262","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2013.6577262","url":null,"abstract":"Mass market receivers feature particular signal processing techniques, to comply with mobile and consumer devices resources and requirements. Delay and frequency estimation algorithms have then been redefined or adapted, in particular to cope with the new Galileo OS signals. The scope of the work is the analysis, development and performance examination of some of the main GNSS acquisition and tracking algorithms currently used in mass market receivers. The feasibility of such techniques is proved by means of semi-analytical and Monte Carlo simulations, outlining the estimators sensitivity and accuracy, and by tests on real Galileo IOV signals.","PeriodicalId":113867,"journal":{"name":"2013 International Conference on Localization and GNSS (ICL-GNSS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125636614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Performance assessment of wavelet based techniques in mitigating narrow-band interference","authors":"L. Musumeci, F. Dovis","doi":"10.1109/ICL-GNSS.2013.6577264","DOIUrl":"https://doi.org/10.1109/ICL-GNSS.2013.6577264","url":null,"abstract":"New Global Navigation Satellite Systems (GNSS) in addition to the current American Global Positioning System (GPS) and the Russian GLONASS are being developed leading the GNSS world towards a new era where a wider plethora of services and signals will be available for the end user. The majority of such services needs high accuracy and reliability provided by the navigational interoperable systems. However, intentional and unintentional interference represent one of the main causes of accuracy degradation, and as a consequence, they are a threat to GNSS based application. This paper focuses on a performance assessment of an innovative interference mitigation algorithm based on the use of the wavelet transform, targeting narrow-band interference. The paper will assess the capability of the representation in the time-scale domain to split the interference component and the useful signal thus allowing for a removal of most of the interfering power. Performance are assessed with respect to the interference bandwidth and carrier frequency offset, the number of decomposition levels and the effect of different wavelet families.","PeriodicalId":113867,"journal":{"name":"2013 International Conference on Localization and GNSS (ICL-GNSS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128895106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}