2008 IEEE/ION Position, Location and Navigation Symposium最新文献_第6页

On co-existence of in-band UWB-OFDM and GPS signals: Tracking performance analysis Dmitriy ^Garmatyuk 带内UWB-OFDM与GPS信号共存的跟踪性能分析

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570090

D. Garmatyuk, Y. Morton, X. Mao

{"title":"On co-existence of in-band UWB-OFDM and GPS signals: Tracking performance analysis Dmitriy ^Garmatyuk","authors":"D. Garmatyuk, Y. Morton, X. Mao","doi":"10.1109/PLANS.2008.4570090","DOIUrl":"https://doi.org/10.1109/PLANS.2008.4570090","url":null,"abstract":"The problem of in-band co-existence between GPS and other potential interfering signals is viewed from the following angle in this paper: Is there a coding or modulation technique which would permit simultaneous use of GPS and other RF services occupying same bandwidth? Very low interference between the UWB radar and GPS signals can be achieved by shaping radar pulses using orthogonal frequency division multiplexing (OFDM) coding, which is a multi-carrier modulation technique targeted for commercial UWB communications. The paper shows that we can, in fact, expect a very good degree of interoperability of a system used for GPS reception and UWB-OFDM radar purposes. The benefits of using UWB sensor in conjunction with GPS can be for example, to supplement positioning algorithms with radar-collected data, as well as to perform general reconnaissance of the surrounding area. The paper includes detailed analysis of the proposed multiple-use UWB-OFDM radar/GPS receiver concept, the effect of co-existing UWB-OFDM signals on GPS receiver tracking loop carrier noise level, and the impact on the quality of GPS solution in weak GPS signal environment. A brief discussion of MATLAB implementation of the modeled scenarios is presented as well.","PeriodicalId":446381,"journal":{"name":"2008 IEEE/ION Position, Location and Navigation Symposium","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117117289","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: 8

Estimation of the clock TIE state space model using a thinning unbiased FIR filtering algorithm 利用稀疏无偏FIR滤波算法估计时钟TIE状态空间模型

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570012

Y. Shmaliy, O. Ibarra-Manzano, L. Arceo-Miquel, L. Moralez-Mendoza, O. Shmaliy

引用次数: 0

Bridging GPS outages in the agricultural environment using virtualite measurements 利用虚拟测量弥合农业环境中的GPS中断

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570025

A. Cole, Jinling Wang, Chris Rizos, A. Dempster

{"title":"Bridging GPS outages in the agricultural environment using virtualite measurements","authors":"A. Cole, Jinling Wang, Chris Rizos, A. Dempster","doi":"10.1109/PLANS.2008.4570025","DOIUrl":"https://doi.org/10.1109/PLANS.2008.4570025","url":null,"abstract":"This paper describes the design, analysis and testing of two methods that can be used to bridge GPS outages during an agricultural row cropping operation when using an integrated INS and code-based GPS system. The use of integrated systems in agricultural operations has become of increasing importance in recent years as farming operators are looking at combining different technologies to increase efficiency and to reduce the environmental dasiafootprintpsila of farming operations. Integrated GPS and INS systems are used to provide good long term stability through the GPS system, with higher data rates and reliability from the INS system. However these systems can still suffer from degradation during GPS blockages and increasing the availability of a position solution is one of the key challenges to improving the use of integrated systems in agricultural applications. The ldquovirtualiterdquo concept is a new method that involves the transformation of INS measurements into simulated GPS signals via the creation of virtual satellites (dasiavirtualitesrdquo) that can be processed alongside real GPS measurements.","PeriodicalId":446381,"journal":{"name":"2008 IEEE/ION Position, Location and Navigation Symposium","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115684376","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

Tactical underwater navigation system (TUNS) 战术水下导航系统

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570032

R. Hartman, W. Hawkinson, K. Sweeney

{"title":"Tactical underwater navigation system (TUNS)","authors":"R. Hartman, W. Hawkinson, K. Sweeney","doi":"10.1109/PLANS.2008.4570032","DOIUrl":"https://doi.org/10.1109/PLANS.2008.4570032","url":null,"abstract":"The problem of underwater navigation for an individual diver is particularly challenging. GPS navigation is unsuitable for most underwater operations and particularly covert operations use because the GPS RF signal is attenuated below usable levels as it penetrates the water column. Dead reckoning methods, which rely on magnetic compass and approximate distance measurements, are susceptible to magnetic interference, inaccurate distance estimates and current induced drift. Pure inertial navigation methods require expensive systems to meet mission accuracy objectives, due to mission lengths of several hours. Advances in the performance of MEMS inertial sensors, solid state compasses and the development of water based Doppler velocity sensors have enabled a positioning solution that meet USMC diver cost and performance goals. A technology development team organized by Honeywell has developed a self-contained prototype system that integrates a GPS receiver, an inertial measurement unit, a solid state magnetometer, a pressure sensor and a multi-axis Doppler velocity sensor that functions as a surface or underwater navigator and also enables the user to perform underwater surveying and mapping. The sensor integration approach was based on a Kalman filter aided strapdown navigator. Gyro and accelerometer information is processed by the strapdown navigation algorithms to produce navigation solution. An extended Kalman filter processes the GPS, magnetometer, Doppler Velocity Log (DVL), and depth sensor measurement to aid the navigation solution and update sensor error estimates. This paper presents an overview of the system hardware and software implementation as well as test results from ocean trials off the coast of Hawaii.","PeriodicalId":446381,"journal":{"name":"2008 IEEE/ION Position, Location and Navigation Symposium","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115802967","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: 19

Assessment on low complexity C/No estimators based on M-PSK signal model for GNSS receivers 基于M-PSK信号模型的GNSS接收机低复杂度C/No估计器评估

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570086

E. Falletti, M. Pini, L. Lo Presti, D. Margaria

引用次数: 17

Feasibility of Gauss-Newton method for indoor positioning 高斯-牛顿方法在室内定位中的可行性

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4569986

Junlin Yan, C. Tiberius, G. Bellusci, G. Janssen

{"title":"Feasibility of Gauss-Newton method for indoor positioning","authors":"Junlin Yan, C. Tiberius, G. Bellusci, G. Janssen","doi":"10.1109/PLANS.2008.4569986","DOIUrl":"https://doi.org/10.1109/PLANS.2008.4569986","url":null,"abstract":"This paper addresses the feasibility of using iterative least-squares (ILS) methods for indoor positioning, where coordinates are to be determined based on estimated/measured ranges. Special attention is given to the Gauss-Newton method, since it is well suited for solving (small residual) non-linear problems and most commonly applied in positioning. Dealing with non-linear inverse problems, the parameter estimation possibly features local minima next to the sought for global one, and the position estimator is inherently biased. In satellite positioning systems, e.g. GPS, or other large scale systems, an initial guess that leads the iterative method to a global convergence is not hard to obtain, and the bias due to non-linearity is negligible. However, in indoor systems, both effects can become problematic, and therefore extra care needs to be taken to properly apply the ILS methods. Two schemes are proposed in this paper, one to obtain a good initial guess and the other to test the significance of the bias due to non-linearity. The validation of the proposed schemes is supported by simulations as well as by experimental results obtained with an UWB acoustic positioning system, which achieves centimeter level positioning accuracy with LoS propagation and full bandwidth between 3.6 and 12.1 kHz (with equal wavelength compared to the radio signals with the bandwidth between 3.1 to 10.6 GHz allowed for UWB radio communications). The proposed schemes are validated with a number of system setups, differing in the positions of transmitters, the position of the receiver, redundancy, the bandwidth used and therefore the range measurement error.","PeriodicalId":446381,"journal":{"name":"2008 IEEE/ION Position, Location and Navigation Symposium","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125774801","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: 35

Performance enhancement of GNSS positioning in critical scenarios by wireless communications systems 关键场景下无线通信系统对GNSS定位性能的增强

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570053

C. Mensing, S. Sand

引用次数: 6

Gun hard inertial measurement unit based on MEMS capacitive accelerometer and rate sensor 基于MEMS电容式加速度计和速率传感器的火炮硬惯性测量单元

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4569974

S. Habibi, S. Cooper, J. Stauffer, B. Dutoit

{"title":"Gun hard inertial measurement unit based on MEMS capacitive accelerometer and rate sensor","authors":"S. Habibi, S. Cooper, J. Stauffer, B. Dutoit","doi":"10.1109/PLANS.2008.4569974","DOIUrl":"https://doi.org/10.1109/PLANS.2008.4569974","url":null,"abstract":"Smart munitions and missiles are increasingly incorporating inertial measurement units for guidance of short range weapon systems. In addition to usual high performance of the required sensors, namely, accelerometers and gyros, this application requires high shock survivability and post shock stability of the sensors. Colibrys has successfully developed a gun hard version of its accelerometer product and AIS has integrated these acceleration sensors and rate gyro to a gun hard IMU. The IMU has been extensively tested and characterized over the full temperature range, at Aerobutt and in many live shooting trials. The extreme shock performance of the IMU has been maintained by making the accelerometer shock resistant. This has been achieved by placing a specially designed mechanical stopper over the sensing element to protect the sensor from extreme shock levels by limiting the mechanical displacement of the MEMS element. This approach has resulted in excellent post shock performance of the acceleration sensor. Beyond this a special assembly technology has been developed at AIS to ensure that key shock components are filtered out and their energy is not transferred into the sensing element; and the vibrating elements are not affected by the components of the firing shock.","PeriodicalId":446381,"journal":{"name":"2008 IEEE/ION Position, Location and Navigation Symposium","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123595589","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: 35

A measure of Loran location-based information Loran基于位置信息的度量

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570109

D. Qiu, S. Lo, P. Enge

引用次数: 4

Cascaded estimation architecture for integration of foot-mounted inertial sensors 足载惯性传感器集成的级联估计架构

2008 IEEE/ION Position, Location and Navigation Symposium Pub Date : 2008-05-05 DOI: 10.1109/PLANS.2008.4570047

Bernhard Krach, Patrick Roberston

引用次数: 100