PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556)最新文献_第4页

The experimental study on GPS/INS/DVL integration for AUV 水下航行器GPS/INS/DVL集成的实验研究

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309014

Lin Zhao, Wei Gao

引用次数: 29

Low cost sensors data for parameters and trajectory determination 用于参数和轨迹确定的低成本传感器数据

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309000

B. Phuyal

{"title":"Low cost sensors data for parameters and trajectory determination","authors":"B. Phuyal","doi":"10.1109/PLANS.2004.1309000","DOIUrl":"https://doi.org/10.1109/PLANS.2004.1309000","url":null,"abstract":"Several applications to determine a moving vehicle trajectory using inexpensive inertial sensors and GPS measurements are emerging. In such systems, a single gyroscope and a vehicle odometer instead of orthogonal set of three gyroscopes and accelerometers are preferred for low cost. Some important factors influencing the accuracy in such configuration are the presumption of the verticality of the gyroscopes, low resolution measurements affected from various environmental and vehicle dynamics, only longitudinal direction linear displacement measurements, residual errors in sensor parameters, etc. Occurrence of GPS data gaps and multi-path errors when driven in urban environment are also sources to make the results unreliable even from integration using Kalman filtering method. Among other, one most important measure to overcome these problems is to determine the parameters with highest accuracy possible. A method called Adaptive Trajectory Segmentation (ATS) has been developed to derive data and use them to determine the parameters easily, accurately and more frequently. Details of this process together with different methods for parameters determination are presented in this paper with some results to illustrate the effectiveness of the methods.","PeriodicalId":102388,"journal":{"name":"PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128862088","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: 2

Mathematical model of missile defence system 导弹防御系统的数学模型

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1308995

S. Varadan, R. Kalpana

引用次数: 0

Indoor personnel tracking using infrared beam scanning 室内人员跟踪采用红外光束扫描

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309062

S. Sayeef, U. Madawala, P. Handley, D. Santoso

引用次数: 10

Terrain navigation using the correlator method 利用相关器方法进行地形导航

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309055

I. Nygren, M. Jansson

引用次数: 21

Generalized normal radius of curvature for correct computation of angular rate 广义法向曲率半径用于角速度的正确计算

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309074

D. Y. Hsu

引用次数: 0

Ionospheric data assimilation methods for geodetic applications 大地测量应用的电离层数据同化方法

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309036

P. Spencer, G. Mader

{"title":"Ionospheric data assimilation methods for geodetic applications","authors":"P. Spencer, G. Mader","doi":"10.1109/PLANS.2004.1309036","DOIUrl":"https://doi.org/10.1109/PLANS.2004.1309036","url":null,"abstract":"One of the major limiting factors in geodetic applications of the Global Positioning System (GPS) is lack of knowledge of the propagation delays imposed by the ionosphere. Single frequency, differential carrier phase measurements are limited to baselines with lengths less than the correlation size of the ionosphere (typically 10-20 km). Extending these measurements to longer distances requires accurate estimates of the slant total electron content (TEC) from a receiver to all observable GPS satellites. While dual frequency carrier phase measurements permit an ionosphere-free linear combination, accurate estimates of the double difference in integrated TEC between pairs of satellites and receivers provide an important constraint for accurate and rapid carrier phase ambiguity resolution. To achieve these accuracy requirements various approaches to the assimilation of groundbased GPS data from the CORS network and the mathematical representation of the ionospheric electron density field have been studied. The model presented uses a Kalman filter algorithm to assimilate data in various forms and an optional mapping function to alter the representation of the state vector in terms of a set of discrete radial empirical orthonormal functions (EOF's). Initial results from local networks show agreement with ambiguity-fixed double-differenced ionosphere delays of a few tenths of a TEC. The advantages of the various approaches and additional results will be discussed.","PeriodicalId":102388,"journal":{"name":"PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131207810","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: 38

Validation of novel navigation signal structures for future GNSS systems 未来GNSS系统新型导航信号结构的验证

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309021

M. Quinlan, G. Burden, S. Rollet, R. De Gaudenzi, S. Harding

{"title":"Validation of novel navigation signal structures for future GNSS systems","authors":"M. Quinlan, G. Burden, S. Rollet, R. De Gaudenzi, S. Harding","doi":"10.1109/PLANS.2004.1309021","DOIUrl":"https://doi.org/10.1109/PLANS.2004.1309021","url":null,"abstract":"Prior to the design and development phase of the European Galileo programme, the European Space Agency (ESA) undertook several pre-development projects to reduce the overall programme risk. Navigation signal bandwidth was determined to be one key risk area. This paper describes the development and use of a highly flexible signal validation facility designed to generate and receive novel, band-limited GNSS signals. The GNSS signal validation facility consists of a fully functioned real-time GNSS constellation simulator and signal generator; a dedicated receiver, a navigation processing unit and a performance analysis software suite. The constellation simulator, receiver and navigation processing unit are capable of operating in real-time with 12 satellites in view and three frequencies per satellite. The GNSS signal validation facility itself is extremely flexible to allow performance comparisons of different satellite constellations, signal designs, code lengths, data rates and frequencies. The GNSS signal validation facility has been used in an extensive test campaign to evaluate the performance of the novel band-limited GNSS signals under realistic user conditions with a representative Galileo satellite constellation. A strong focus of the signal validation test campaign was the performance of three-carrier differential navigation algorithms. This paper briefly describes the operation of the GNSS signal validation facility and provides an overview of the main test campaign performance results. This paper contains the first published results from the GNSS signal validation facility. A major result from the test campaign is that the novel band-limited GNSS signals provide robust and accurate positioning capability with navigation data rates of up to 3000 s/s. The receiver was shown to receive 24 MHz band-limited signals with a loss of less than 1 dB for a spreading code of 15.345 Mc/s and a sampling frequency of 56 MHz.","PeriodicalId":102388,"journal":{"name":"PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133345629","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

Lessons learned through the implementation of Space-Time Adaptive Processing algorithms for GPS reception in jammed environments 通过实现时空自适应处理算法在干扰环境下的GPS接收的经验教训

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1309025

K. McDonald, R. Raghavan, R. Fante

{"title":"Lessons learned through the implementation of Space-Time Adaptive Processing algorithms for GPS reception in jammed environments","authors":"K. McDonald, R. Raghavan, R. Fante","doi":"10.1109/PLANS.2004.1309025","DOIUrl":"https://doi.org/10.1109/PLANS.2004.1309025","url":null,"abstract":"The use of Space-Time Adaptive Processing (STAP) algorithms to mitigate the detrimental effects of jamming upon GPS receivers has gained significant interest in the signal processing community. Sufficient spatial and temporal degrees of freedom allow these algorithms to position nulls in the space-time locations of jammers while concurrently allowing the reception of the GPS signal. Unfortunately, algorithm design assumptions tend to be optimistic and can prove to be unrealistic and inaccurate. Additionally, much of the analysis, development, and evaluation of these digital beamforming algorithms have been accomplished with computer-generated simulations that may not accurately address mismatches between the assumed signal model and the actual environment. In recognition of these shortcomings, MITRE has recently processed recorded data containing both the GPS signal and jamming that can be used to evaluate current and future generation antenna array electronics and signal processing algorithms. In this paper, practical issues encountered during the analysis of the recorded data are presented. These issues must be addressed to ensure the successful evaluation of STAP algorithms for GPS. Techniques are developed to accurately calculate jammer mitigation performance as well as the resulting satellite availability. A methodology for beampattern visualization is also described. We conclude that careful consideration of data collection methods and conditions is required to adequately assess adaptive algorithm performance.","PeriodicalId":102388,"journal":{"name":"PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128742747","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

Robust airborne navigation algorithms for SRGPS SRGPS稳健机载导航算法

PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556) Pub Date : 2004-04-26 DOI: 10.1109/PLANS.2004.1308991

M. Heo, B. Pervan, J. Gautier, S. Pullen, P. Enge, D. Gebre‐Egziabher

引用次数: 22