2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)最新文献

Deep fusion of vector tracking GNSS receivers and a 3D city model for robust positioning in urban canyons with NLOS signals 基于NLOS信号的城市峡谷中矢量跟踪GNSS接收机与三维城市模型的深度融合

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-03 DOI: 10.1109/NAVITEC.2014.7045155

M. Sahmoudi, Aude Bourdeau, J. Tourneret

{"title":"Deep fusion of vector tracking GNSS receivers and a 3D city model for robust positioning in urban canyons with NLOS signals","authors":"M. Sahmoudi, Aude Bourdeau, J. Tourneret","doi":"10.1109/NAVITEC.2014.7045155","DOIUrl":"https://doi.org/10.1109/NAVITEC.2014.7045155","url":null,"abstract":"In urban canyons, the GNSS satellite signals may travel an additional distance due to reflection and diffraction before reaching the receiver antenna. Where no direct path is available, this is called a non-line of- sight (NLOS) propagation and adds a positive bias to the geometric measured pseudorange. In this paper, we address the issue of GNSS positioning in harsh environments using constructively the NLOS signals. To exploit these biased signals, we compensate for the NLOS bias using a 3D GNSS simulation model of the environment. We use the 3D model as a priori information to characterize the additional NLOS bias. In this work, we propose a deep integration of the 3D model-based signal characterization into an advanced GNSS receiver architecture called vector tracking loops. The proposed architecture is a combination of a vector tracking receiver and a co-processor of external local information to correct the GNSS measurements. Obtained results with real GPS signals illustrates the effectiveness of this approach to improve the accuracy and reliability of the navigation solution in urban canyons.","PeriodicalId":254397,"journal":{"name":"2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126635581","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}

引用次数: 7

Use of weak GNSS signals in a mission to the moon 在月球任务中使用微弱的全球导航卫星系统信号

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045151

M. Manzano-Jurado, Julia Alegre-Rubio, A. Pellacani, G. Seco-Granados, J. López-Salcedo, E. Guerrero, A. García-Rodríguez

{"title":"Use of weak GNSS signals in a mission to the moon","authors":"M. Manzano-Jurado, Julia Alegre-Rubio, A. Pellacani, G. Seco-Granados, J. López-Salcedo, E. Guerrero, A. García-Rodríguez","doi":"10.1109/NAVITEC.2014.7045151","DOIUrl":"https://doi.org/10.1109/NAVITEC.2014.7045151","url":null,"abstract":"According to the European Space Agency (ESA) Lunar Exploration program, the use of GNSS weak-signal navigation in future lunar exploration missions has the potential to increase the robustness of the navigation during all mission phases and improve considerably its autonomy. The major objectives of the ESA Moon-GNSS project have been to determine the feasibility of using GNSS (GPS/Galileo) weak-signal technology in future lunar missions to improve the navigation performance in terms of accuracy, cost reduction and autonomy. The Moon mission scenario is very challenging for the GNSS signals processing: less visibility compared to an Earth-based receiver, low signal strength, poor satellite geometry, Earth and Moon signal occultation, and spacecraft dynamics. The identification of the Moon-GNSS navigation receiver requirements for the upcoming lunar exploration missions has been performed. The impact of the receiver requirements on the Moon-GNSS receiver module architecture and algorithms has been analyzed (weak signal processing, filtering and navigation), including an overview of the state of the art space-borne GNSS receivers. Besides, the synergies between GNSS signal/navigation processing and other navigation sensors (i.e. accelerometers, optical camera, laser altimeter) have been analyzed, using the state of the art of sensors integration for space missions. A demonstrator of the weak-signal Moon-GNSS navigation has been designed and implemented, showing the main functional and performance capabilities of the Moon-GNSS receiver. A test campaign representative of a real Moon-GNSS mission has been carried out, covering all the mission phases of the real mission conditions in terms of dynamics and signal disturbances, for different configurations: standard sensors, standard sensors plus GNSS and stand-alone GNSS navigation.","PeriodicalId":254397,"journal":{"name":"2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131233254","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}

引用次数: 27

Sequential test for signal-level integrity monitoring in GNSS receivers GNSS接收机信号级完整性监测的顺序测试

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045156

J. M. Parro-Jimenez, R. Ioannides, M. Crisci, J. López-Salcedo

引用次数: 1

Implementation and tuning of LEO satellites real-time navigation algorithm based on single frequency GPS measurements 基于单频GPS测量的LEO卫星实时导航算法的实现与调优

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045143

A. Avanzi, A. García, P. Tortora

{"title":"Implementation and tuning of LEO satellites real-time navigation algorithm based on single frequency GPS measurements","authors":"A. Avanzi, A. García, P. Tortora","doi":"10.1109/NAVITEC.2014.7045143","DOIUrl":"https://doi.org/10.1109/NAVITEC.2014.7045143","url":null,"abstract":"Since its origin, the navigation services provided by the GNSS system have been applied to a variety of field, some of which are beyond the original scope of the infrastructure. LEO satellites autonomous orbit determination by means of on board GNSS receiver is one of the cases. The achievable position accuracy, in the order of 10 m 3d rms, satisfies most of the mission requirements and can be implemented with a simple navigation algorithm based on loose constraining of observations. For those missions that require better real time accuracies, sub meter positioning is achievable, by means of reduced dynamic filtering, which provides strong constraining of observations thanks to a detailed orbit force model. The algorithm general architecture is well covered in literature, although its real world implementation is still limited to few cases, partially because few are the missions that require such accuracy in real time, and partially because of its implementation complexity. This paper addresses one aspect of this complexity, which is related to filter tuning, or in other words to the effective definition of a statistical description of observations and process errors. Being the filter tuning a process of trial and error in most cases, and a delicate implementation step at the same time which may lead to instability and divergence, this paper proposes a procedure to achieve stable sub meter positioning from the reduced dynamic algorithm implementation.","PeriodicalId":254397,"journal":{"name":"2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125827239","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}

引用次数: 3

Code-Shift-Keying (CSK) with advanced FEC coding for GNSS applications in satellite multipath channel 具有先进FEC编码的CSK在卫星多径信道中用于GNSS应用

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045139

R. Andreotti, F. Zanier, A. Emmanuele, M. Luise, D. Fontanella

引用次数: 7

Use of a Ray-Tracing tool to predict the international space station multipath and masking environment 使用光线追踪工具预测国际空间站的多路径和掩蔽环境

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045146

M. Porretta, F. Zanier, A. García-Rodríguez, O. Mongrard, M. Powe

{"title":"Use of a Ray-Tracing tool to predict the international space station multipath and masking environment","authors":"M. Porretta, F. Zanier, A. García-Rodríguez, O. Mongrard, M. Powe","doi":"10.1109/NAVITEC.2014.7045146","DOIUrl":"https://doi.org/10.1109/NAVITEC.2014.7045146","url":null,"abstract":"The Automated Transfer Vehicle (ATV) uses Relative Global Positioning System (RGPS) to navigate towards the International Space Station (ISS) while performing initial rendezvous manoeuvers. The RGPS solution includes a Global Positioning System (GPS) receiver in the ISS Zvezda module, whose observations are transmitted to, and applied by, the approaching ATV. The characterization of the GPS reception environment of the ISS is, therefore, a key element when planning rendezvous operations. The reception environment of the ISS is time-variant due to the relative motion between the ISS and the GPS satellites and to the sun-tracking orientation of the ISS Solar Array (SA) panels. In order to predict, for a given configuration, the most critical multipath and masking events, a Ray-Tracing (RT) tool has been developed at the European Space Research and Technology Centre (ESTEC) of the European Space Agency (ESA). The tool is based on Geometrical Optics (GO) and evaluates, for each multipath event, the associated effects on the pseudo-range error. The tool was validated using Flight Data Measurements (FDM) collected during two measurements campaigns which took place in 2010 and 2011, respectively. In particular, the validation activities show that the tool is able to timely predict the majority of the most critical multipath events. This paper presents the RT tool, the underlying validation activities and the prediction results which were prepared to support the rendezvous operations for the \"Albert Einstein\" ATV mission (June 2013). For this mission, three candidate configurations for the ISS were analyzed with the RT tool. Based on the prediction results, the configuration which minimizes the occurrence of the most critical events was also identified.","PeriodicalId":254397,"journal":{"name":"2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114653859","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}

引用次数: 1

Comparative results analysis on positioning with real LTE signals and low-cost hardware platforms LTE真实信号定位与低成本硬件平台的对比结果分析

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045148

J. A. del Peral-Rosado, J. M. Parro-Jimenez, J. López-Salcedo, G. Seco-Granados, P. Crosta, F. Zanier, M. Crisci

引用次数: 35

A new strategy to mitigate side-peak lock errors in tracking multi-peak code correlation functions 一种减少多峰码相关函数跟踪中侧峰锁错误的新策略

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045133

D. Margaria, E. Falletti, A. Bagnasco, F. Parizzi, Augusto Torchi

引用次数: 4

A four-channel GNSS front-end IC for a compact interference- and jamming-robust multi-antenna Galileo/GPS receiver 一种用于紧凑型抗干扰和抗干扰多天线伽利略/GPS接收机的四通道GNSS前端IC

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045150

E. Schafer, S. Irteza, A. Jager, B. Bieske, A. Richter, Muhammad Abdullah Khan, M. Sathyamurthy, Sebastian Kerkmann, Alexander Rolapp, E. Hennig, R. Sommer

引用次数: 2

Software-based receiver approach for acquiring GPS signals using block repetition method 基于软件的GPS信号块重复采集方法

2014 7th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC) Pub Date : 2014-12-01 DOI: 10.1109/NAVITEC.2014.7045144

A. Ahmed, R. Tiwari, H. Strangeways, S. Boussakta

引用次数: 4