Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium最新文献_第9页

A new cascade method for detecting GPS multiple outliers based on total residuals of observation equations 基于观测方程总残差的GPS多异常点级联检测新方法

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236882

Yun Zhang, Falin Wu, H. Isshiki

引用次数: 1

Optical flow measurement of human walking 人体行走的光流测量

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236926

Qingwen Liu, O. Osechas, J. Rife

引用次数: 7

Particle filter based positioning with 3GPP-LTE in indoor environments 基于粒子滤波的3GPP-LTE室内环境定位

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236895

C. Gentner, E. Muñoz, M. Khider, E. Staudinger, S. Sand, A. Dammann

{"title":"Particle filter based positioning with 3GPP-LTE in indoor environments","authors":"C. Gentner, E. Muñoz, M. Khider, E. Staudinger, S. Sand, A. Dammann","doi":"10.1109/PLANS.2012.6236895","DOIUrl":"https://doi.org/10.1109/PLANS.2012.6236895","url":null,"abstract":"Global navigation satellite systems (GNSSs) can deliver very good position estimates under optimum conditions. However, especially in urban and indoor scenarios with severe multipath propagation and blocking of satellites by buildings the accuracy loss can be very large. Often, a position with GNSS is impossible in these scenarios. On the other hand, cellular wireless communication systems such as the third generation partnership project (3GPP) long-term evolution (LTE) provide excellent coverage in urban and most indoor environments. Thus, this paper researches timing based positioning algorithms, in this case time difference of arrival (TDoA), using 3GPP-LTE measurements. Several approaches and algorithms exist to solve the navigation equation for cellular systems, for instance Bayes filtering methods such as Kalman or particle filter. This paper specifically considers and develops a particle filter for 3GPP-LTE TDoA positioning. To obtain better positioning results, a 3GPP-LTE TDoA error model is derived. This error model is afterwards included in the likelihood function of the particle filter. The last part of this paper, evaluates the positioning performances of the developed particle filter in an indoor scenario. These evaluations show clearly the possibility of using 3GPP-LTE measurements for indoor positioning.","PeriodicalId":282304,"journal":{"name":"Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125857485","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: 60

Using unlocated fingerprints in generation of WLAN maps for indoor positioning 利用未定位指纹生成无线局域网地图用于室内定位

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236930

M. Raitoharju, T. Fadjukoff, S. Ali-Loytty, R. Piché

引用次数: 11

Using inertial sensors of iPhone 4 for car navigation 使用iPhone 4的惯性传感器进行汽车导航

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236927

X. Niu, Quan Zhang, You Li, Yahao Cheng, C. Shi

{"title":"Using inertial sensors of iPhone 4 for car navigation","authors":"X. Niu, Quan Zhang, You Li, Yahao Cheng, C. Shi","doi":"10.1109/PLANS.2012.6236927","DOIUrl":"https://doi.org/10.1109/PLANS.2012.6236927","url":null,"abstract":"Smart phones start to equip with MEMS tri-axis accelerometer (i.e. G-sensor) and tri-axis gyroscope chips in recent years for user interface (UI) and game playing purposes. These two sensors actually compose a complete IMU and might be qualified as an INS to aid the GPS positioning of the phones, i.e. a GPS/INS integrated navigation system can be implemented. This paper explores the idea of using the inertial sensors in iPhone 4 from Apple Inc. to make GPS/INS integration for car navigation. A loosely-coupled integrated navigation algorithm with 15-states Kalman filter was used to fuse the data from the GPS and the MEMS inertial sensors. The results of road tests have shown that the MEMS sensors can bridge the GPS position gaps effectively, and can provide attitude estimation at degree level accuracy. The non-holonomic constraint can improve the navigation performance significantly, including both the position and heading. The attitude accuracy can reach the level of 1.4 degrees for tilt, and 2.0 degrees for heading. During the GPS signal outages (e.g. tunnel cases), the position drifts of the MEMS INS are at the level of 30 meters after 30 seconds, with the non-holonomic constraint. Results of this paper proved that the inertial sensors of iPhone 4 can be used for car navigation purpose. They can provide enhanced positioning capability and decent attitude estimation for various applications.","PeriodicalId":282304,"journal":{"name":"Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132208381","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: 32

Using the microsoft kinect for 3D map building and teleoperation 使用微软kinect进行3D地图构建和远程操作

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236847

W. Woodall, D. Bevly

引用次数: 7

Cold atom micro primary standard (CAMPS) 冷原子微初级标准

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236853

K. Nelson, K. Salit, J. Kriz, D. Sandquist, J. Sebby-Strabley

{"title":"Cold atom micro primary standard (CAMPS)","authors":"K. Nelson, K. Salit, J. Kriz, D. Sandquist, J. Sebby-Strabley","doi":"10.1109/PLANS.2012.6236853","DOIUrl":"https://doi.org/10.1109/PLANS.2012.6236853","url":null,"abstract":"We present progress towards a primary frequency standard with substantial reduction in size, weight, and power over the state of the art. Our clock is based on the microwave hyperfine transition in rubidium 87. Unique to this effort, our focus is on special design considerations and engineering trades to realize a primary frequency standard in an ultimate 5 cc form factor, with 50 mW power consumption, and which is compatible with a robust, high-volume manufacturing process. In our approach, atoms are laser cooled from a background vapor into a magneto-optical trap. The magnetic and optical trapping forces are extinguished, allowing the atoms to freely expand, and Ramsey spectroscopy is performed to measure the clock transition between the F = 1 and F = 2 hyperfine states. Key to size reduction is the use of laser cooled atoms to achieve narrow line widths in a small size, and the ability to perform all the clock functions (sample preparation, spectroscopy, and read-out) in one physical location. Using a miniaturized physics package, signal-to-noise ratios greater than 100 and clock line quality factors greater than 1E+8 have been achieved. We also discuss limiting factors and prospects for improvement.","PeriodicalId":282304,"journal":{"name":"Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129303285","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: 5

Integrity risk of cycle resolution in the presence of bounded faults 存在有界错误时循环解决的完整性风险

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236941

S. Khanafseh, M. Joerger, B. Pervan

{"title":"Integrity risk of cycle resolution in the presence of bounded faults","authors":"S. Khanafseh, M. Joerger, B. Pervan","doi":"10.1109/PLANS.2012.6236941","DOIUrl":"https://doi.org/10.1109/PLANS.2012.6236941","url":null,"abstract":"This paper introduces a method to compute an upper bound on the integrity risk of cycle resolution in the presence of bounded measurement errors and faults. In high accuracy applications such as shipboard landing and autonomous airborne refueling, carrier phase cycle ambiguities must be estimated and resolved as integers (or `fixed ambiguities'). In applications that also demand high integrity, the cycle resolution process must comply with a fault-free integrity risk requirement. Under normal error conditions, fault-free integrity risk can readily be quantified using existing cycle resolution methods; this is true even in the presence of known measurement biases. However, evaluating the integrity risk of a cycle resolution process under fault hypotheses has not yet been addressed. In the case of rare-event measurement faults such as satellite failures and atmospheric anomalies, the magnitude of the fault is never exactly known, but it can often be bounded. The bound can either be a result of a monitor's minimum detectable error, from extensive data analysis, or even from physical limitation. In this paper, we develop a method to account for these bounded errors in the computation of the integrity risk for navigation systems that rely on fixed carrier phase cycle ambiguities.","PeriodicalId":282304,"journal":{"name":"Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130786558","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: 5

Statistical modeling of rate gyros and accelerometers 速率陀螺仪和加速度计的统计建模

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236962

Richard J. Vaccaro, Ahmed S. Zaki

引用次数: 4

Realtime implementation of visual-aided inertial navigation using epipolar constraints 利用极极约束的视觉辅助惯性导航的实时实现

Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2012-04-23 DOI: 10.1109/PLANS.2012.6236948

John-Olof Nilsson, D. Zachariah, M. Jansson, P. Handel

引用次数: 15