GDOP Analysis for Positioning System Design

Sharp, Ian; Yu, Kegen; Guo, Ying

doi:10.1109/tvt.2009.2017270

Cited by 183 publications

(119 citation statements)

References 15 publications

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“…GDOP is a vital metric, which indicates the efficacy of the sensor network topological distribution in aiding the geolocation process as detailed in works like [11], [19]. Large GDOP values correspond to a poor geometry topology, which will result in poor geolocation performance.…”

Section: B Gdop Based Receivers Placement Strategymentioning

confidence: 99%

See 1 more Smart Citation

Cognitive waveform and receiver selection mechanism for multistatic radar

Kilani

Nijsure

Gagnon

et al. 2016

IET Radar, Sonar & Navigation

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A novel Cognitive Radar (CR) approach to improve the extended targets detection and resolution is developed in a multistatic radar context. A cognitive waveform selection mechanism based on target probability of detection maximization in conjunction with adaptive receiver allocation/selection is proposed. Apart from the cognitive waveform selection objective, this process aims at evaluating the optimal positions for the radar receivers in an attempt to iteratively minimize the Geometric Dilution of Precision (GDOP), subsequently resulting in a high precision target geolocation estimate. The cognitive waveform selection mechanism is based on target dynamics involving time varying target scattering characteristics and clutter distribution parameters. Thus with the proposed dual objective approach, the concept of cognition can be extended to both the radar transmitter and receiver sites. Numerical results demonstrate better target detection performance and positioning accuracy using the proposed approach as compared with conventional methods based on static transmission or stationary multistatic receivers topology.

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Section: B Gdop Based Receivers Placement Strategymentioning

confidence: 99%

“…Recently applied to general sensor network systems design [11]- [13], GDOP is defined as the ratio of the root-mean-square position error to the root-mean-square ranging error [12]. Consequently, higher GDOP value for a particular topological distribution of the sensor networks represents poor positioning performance.…”

Section: Introductionmentioning

confidence: 99%

Cognitive waveform and receiver selection mechanism for multistatic radar

Kilani

Nijsure

Gagnon

et al. 2016

IET Radar, Sonar & Navigation

View full text Add to dashboard Cite

show abstract

“…DOPs has been widely used as an accuracy metric for navigation and tracking systems. The issue of optimization and reduction DOP coefficients is subject to a number of studies (Sharp et al 2009, Ning et al 2007, Morales et al 2016. Although the DOP values are standard measures applied for determination of the quality of satellites geometry, it concerns only elements located in the main diagonal of the matrix (2), which are responsible for the accuracy of particular coordinates.…”

Section: Quality Measures Of Positioning Geometrymentioning

confidence: 99%

Geometric Aspects of Ground Augmentation of Satellite Networks for the Needs of Deformation Monitoring

Protaziuk

2016

Artificial Satellites

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ABSTRACT. Satellite measurements become competitive in many tasks of engineering surveys, however, in many requiring applications possibilities to apply such solutions are still limited. The possibility to widely apply satellite technologies for displacements measurements is related with new challenges; the most important of them relate to increasing requirements concerning the accuracy, reliability and continuity of results of position determination. One of the solutions is a ground augmentation of satellite network, which intention is to improve precision of positioning, ensure comparable accuracy of coordinates and reduce precision fluctuations over time. The need for augmentation of GNSS is particularly significant in situations: where the visibility of satellites is poor because of terrain obstacles, when the determined position is not precise enough or a satellites constellation does not allow for reliable positioning. Ground based source/sources of satellite signal placed at a ground, called pseudosatellites, or pseudolites were intensively investigated during the last two decades and finally were developed into groundbased, time-synchronized transceivers, that can transmit and receive a proprietary positioning signal. The paper presents geometric aspects of the ground based augmentation of the satellite networks using various quality measures of positioning geometry, which depends on access to the constellation of satellites and the conditions of the observation environment. The issue of minimizing these measures is the key problem that allows to obtain the position with high accuracy. For this purpose, the use of an error ellipsoid is proposed and compared with an error ellipse. The paper also describes the results of preliminary accuracy analysis obtained at test area and a comparison of various measures of the quality of positioning geometry.

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Section: Selection Of Anchor Locationmentioning

confidence: 99%

“…GDOP provide guidance to the design of short to mediu m-range outdoor and indoor locating systems [9]. At the same time, [9] put forward the analysis of GDOP is an essential feature in determining the performance of a positioning system. At the same time, [12] put forward that the accuracy of a position estimate can be expressed as the product of the GDOP at a point and the root-mean-square error (RMSE) of the ranging errors fro m anchors to the moving tag.…”

Section: Selection Of Anchor Locationmentioning

confidence: 99%

Research on Network Scalability Based on UWB Indoor Localization System

Long

Shen

Feng

et al. 2016

MATEC Web of Conferences

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Abstract. Network Scalability is an important step in the development of UWB indoor localization system. Owing to its fine resolution and robustness in cluttered environments, UWB signals are well suited for localization purposes as they allow high ranging accuracy. T DOA algorithm based on UWB indoor localization system can achieve highprecision positioning but it requires each anchor clock synchronization. This paper mainly studied the optional of master anchor based on T DOA algorithm. It becomes an effective way to adapt to the complex communication environment. T hen realized the network scalability in multiple anchor conditions and finally evaluated the performance of master anchor optional algorithm on a realistic indoor scenario. A localization error analysis on UWB indoor positioning system was performed. The smallest T DOA measurement error is 15.127 cm and the worst error is 27.230 cm, as was shown by the test results.

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GDOP Analysis for Positioning System Design

Cited by 183 publications

References 15 publications

Cognitive waveform and receiver selection mechanism for multistatic radar

Cognitive waveform and receiver selection mechanism for multistatic radar

Geometric Aspects of Ground Augmentation of Satellite Networks for the Needs of Deformation Monitoring

Research on Network Scalability Based on UWB Indoor Localization System

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