A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
Filters
Asymptotic Performance of TDOA Estimation using Satellites
[article]
2021
arXiv
pre-print
Preserved Fulltext
The asymptotic CRB indicates that for practical system setup, a TDOA estimator approaches the performance of the ideal estimator. ...
The second estimator ignores the amplitudes and hence uses only time difference of arrival (TDOA) information. ...
This work analyzes the asymptotic performance of a system with a large number of satellites using TDOA or TDOA+RSS. Asymptotic performance with FDOA is left for future research. ...
arXiv:2106.01025v1
fatcat:5zyvy4abrvfi7l3kcnguh6w3ui
3D TDOA Emitter Localization Using Conic Approximation
2023
Sensors
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2023; you can also visit the original URL.
The file type is application/pdf.
The new two-stage estimator is shown to be capable of outperforming the maximum likelihood estimator while performing very close to the Cramer Rao lower bound in poor sensor–emitter geometries and large ...
This paper develops a new time difference of arrival (TDOA) emitter localization algorithm in the 3D space, employing conic approximations of hyperboloids associated with TDOA measurements. ...
Conflicts of Interest: The author declares no conflict of interest. ...
doi:10.3390/s23146254
pmid:37514549
pmcid:PMC10383734
fatcat:vtjp5y3egvev7lhtcamkh3avqq
A new iterative algorithm for geolocating a known altitude target using TDOA and FDOA measurements in the presence of satellite location uncertainty
2015
Chinese Journal of Aeronautics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
This paper considers the problem of geolocating a target on the Earth surface whose altitude is known previously using the target signal time difference of arrival (TDOA) and frequency difference of arrival ...
Computer simulations are used to compare the performance of the proposed iterative geolocation technique with those of two benchmark algorithms. ...
Acknowledgments This study was co-supported by the National Natural Science Foundation of China (Nos. 61304264 and 61305017) and the Innovation Foundation of Industry, Education and Research of Jiangsu ...
doi:10.1016/j.cja.2015.08.015
fatcat:ikztat4lyvgl3h3zj53jnnyqgm
A Survey for Recent Techniques and Algorithms of Geolocation and Target Tracking in Wireless and Satellite Systems
2021
Applied Sciences
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2021; you can also visit the original URL.
The file type is application/pdf.
A single Radio-Frequency Interference (RFI) is a disturbance source of modern wireless systems depending on Global Navigation Satellite Systems (GNSS) and Satellite Communication (SatCom). ...
The methods used for overcoming the RFI include interference detection, interference classification, interference geolocation, tracking and interference mitigation. ...
, it can be noted that the performance of the proposed algorithm is very asymptotical to CRLB [44] . ...
doi:10.3390/app11136079
fatcat:6vgotxtkrjanzhu5rjh7t5rkju
Cross Correlation-based Direct Positioning for Wideband Sources using Phased Arrays
[article]
2018
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
By performing direct positioning after the compartmentalisation process, we will show that geolocation of a large number of sources can be achieved by our proposed method at accuracies that exceed all ...
However, the number of geo-localisable signal sources is still limited by the number of antenna elements at each node. ...
computation (the approach used by TARGET) and the need to perform narrowband decomposition (the approach used by DPD). ...
arXiv:1809.04207v1
fatcat:qqnrxjromzdhxhypsxf32d5qse
A Robust MUSIC Based Scheme for Interference Location in Satellite Systems with Multibeam Antennas
2013
International Journal of Computer Applications
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Simulations were performed using typical satellite multi-beam antenna configurations and results show that the proposed scheme can effectively estimates the direction of arrival in the azimuth and elevation ...
The proposed method provides super resolution and asymptotic maximum likelihood estimates of the direction of arrivals even at low SNR values. ...
TDOA dual satellite based TDOA method offer the advantage of locating interference sources regardless of their mission and without disruption of normal transmissions via the satellite. ...
doi:10.5120/14165-2322
fatcat:7u4zpmqx4zak7k3tvtmyxni37a
A Robust MUSIC Based Scheme for Interference Location in Satellite Systems with Multibeam Antennas
[article]
2014
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Simulations were performed using typical satellite multi-beam antenna configurations and results show that the proposed scheme can effectively estimates the direction of arrival in the azimuth and elevation ...
The proposed method provides super resolution and asymptotic maximum likelihood estimates of the direction of arrivals even at low SNR values. ...
TDOA dual satellite based TDOA method offer the advantage of locating interference sources regardless of their mission and without disruption of normal transmissions via the satellite. ...
arXiv:1410.0046v1
fatcat:uuxe2qbkr5cpxme3kdvnhn7oi4
Multi-Network Asynchronous TDOA Algorithm Test in a Simulated Maritime Scenario
2020
Sensors
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
This technique was tested in a simulated scenario, where the position of a moving target was estimated using different configurations of the receivers network. ...
The proposed approach, which is derived form satellite applications, is not limited to the AIS signals or to the maritime domain, and it can be adopted to estimate the position of any radiofrequency transmitter ...
Conflicts of Interest: The authors declare no conflict of interest. ...
doi:10.3390/s20071842
pmid:32224952
pmcid:PMC7180892
fatcat:h4i5d6vzwfg6hcfr5nrtfbbmmm
The Enhanced Locating Performance of an Integrated Cross-Correlation and Genetic Algorithm for Radio Monitoring Systems
2014
Sensors
Preserved Fulltext
The Internet Archive has a preservation copy of this work in our general collections.
The file type is application/pdf.
The rapid development of wireless broadband communication technology has affected the location accuracy of worldwide radio monitoring stations that employ time-difference-of-arrival (TDOA) location technology ...
In this study, TDOA-based location technology was implemented in Taiwan for the first time according to International Telecommunications Union Radiocommunication (ITU-R) recommendations regarding monitoring ...
NSC 102-2221-E-244-001 by the National Science Council and by the special-interference project of the National Communications Commission in Taiwan. ...
doi:10.3390/s140407541
pmid:24763254
pmcid:PMC4029646
fatcat:trd5lq4minhmjibmliynggrkuy
Mobile positioning using wireless networks: possibilities and fundamental limitations based on available wireless network measurements
2005
IEEE Signal Processing Magazine
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The possibilities include a sensor fusion approach and model-based filtering, while the fundamental limitations provide hard bounds on the accuracy of position estimates, given the information in the measurements ...
P ositioning in wireless networks is today mainly used for yellow page services. ...
FUNDAMENTAL PERFORMANCE BOUNDS Recently, location performance in the dynamic case in terms of the CRLB has been studied in [49] - [51] for the TDOA case. ...
doi:10.1109/msp.2005.1458284
fatcat:jjf6xckqxneeteqty7q4n52hly
Approximate Maximum Likelihood Algorithm for Moving Source Localization Using TDOA and FDOA Measurements
2012
Chinese Journal of Aeronautics
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
A closed-form approximate maximum likelihood (AML) algorithm for estimating the position and velocity of a moving source is proposed by utilizing the time difference of arrival (TDOA) and frequency difference ...
But a direct approach that uses the ML estimator to solve the localization problem is exhaustive search in the solution space, and it is very computationally expensive, and prohibits real-time processing ...
And the position and velocity estimation biases of the proposed estimator are all relatively small for low measurement noise level, which verifies that the proposed estimator is asymptotically unbiased ...
doi:10.1016/s1000-9361(11)60423-8
fatcat:k4r243n635b47j63ni7eexhoka
Improving positioning in LTE through collaboration
2014
2014 11th Workshop on Positioning, Navigation and Communication (WPNC)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The global navigation satellite system (GNSS) is the most accessible positioning systems which are widely used in cellphones. ...
However, poor operation in indoor and dense environments leads us to use cellular localization as a backup solution. ...
In order to estimate a unique location, a GNSS receiver must initially perform a search of satellites in order to acquire at least four satellite signals. ...
doi:10.1109/wpnc.2014.6843292
dblp:conf/wpnc/VaghefiB14
fatcat:vk7uhgohqba5bb5po5tn5b6roi
On the use of calibration emitters for TDOA source localization in the presence of synchronization clock bias and sensor location errors
2019
EURASIP Journal on Advances in Signal Processing
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
The first stage estimates the clock bias and refines the sensor positions by using the calibration TDOA measurements and the prior knowledge of sensor locations. ...
The second stage provides the estimates of source location by combining the TDOA measurements of target signal and the estimated values in the first phase. ...
The CRB analyses are performed in Section 4. Section 5 develops the proposed TDOA localization methods. The asymptotic efficiency of the proposed estimators is proved in Section 6. ...
doi:10.1186/s13634-019-0629-1
fatcat:zcer7aazk5d2fijqqhacbmob5e
A Look at the Recent Wireless Positioning Techniques With a Focus on Algorithms for Moving Receivers
2016
IEEE Access
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
This paper includes a review of various fundamental techniques, current trends, and state-of-the-art systems and algorithms employed in wireless position estimation using moving receivers. ...
Employment of ground-based positioning systems has been consistently growing over the past decades due to the growing number of applications that require location information where the conventional satellite-based ...
The CRLB of estimation errors is derived and used as the benchmark in performance analysis. ...
doi:10.1109/access.2016.2606486
fatcat:5kutfzkvmrcjblysfqc7e5tpji
On the Statistical Model of Source Localization based on Range Difference Measurements
[article]
2016
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
We investigate the case of planar localization of a source using a minimal configuration of three non aligned receivers. ...
As the set of feasible measurements is a semialgebraic variety, this investigation makes use of techniques from Algebraic Statistics and Information Geometry. ...
Acknowledgments The authors would like to thank Alessandra Guglielmi for useful discussions and suggestions during the preparation of this work. ...
arXiv:1606.08303v1
fatcat:tigy262h75gevlaq5igq5jzr4a
« Previous
Showing results 1 — 15 out of 197 results