Single Base Station Positioning based on Multipath Parameter Clustering in NLOS Environment

Wang, Yong; Wu, Qihong; Zhou, Mu; Yang, Xiaolong; Nie, Wei; Xie, Liangbo

doi:10.21203/rs.3.rs-189732/v1

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…The present problem is aimed at determining the location of source signal, e.g., a mobile station (MS), in a NLOS environment by using a single base station (BS) based on scattering area model. The Gaussian-based scattering area model is introduced to describe spatial geometric distribution of scatterers and MS, which can be used in achieving high precision under NLOS propagation conditions [15], compared with the conventional ring of scattering (ROS) model and the disk of scattering (DOS) model [16]. The MS-BS geometry is given in Figure 1.…”

Section: Scattering Region Modelmentioning

confidence: 99%

Multipath Cluster-Assisted Single Station Localization Based on SSA-GA in Outdoor NLOS Environment

Liao

Wang

et al. 2022

Wireless Communications and Mobile Computing

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In this paper, we propose a novel multipath cluster-assisted single station localization method based on a genetic algorithm-based improved salp swarm algorithm (SSA-GA) to improve localization accuracy in an outdoor non-line-of-sight (NLOS) propagation environment. The scattering area model is presented which scatterers are considered Gaussian distribution for outdoor NLOS environments. The geometrical properties of propagation paths, such as angle of arrival and time of arrival, are jointly utilized to construct pseudoscatterer distribution. In order to filter the interference scatterers distributed outside the scattering region, the Gaussian kernel-based algorithm is developed. Furthermore, SSA-GA is proposed to solve the positioning objective functions constructed by pseudoscatterers clustering accurately. Results confirm the practicability of our newly proposed method, and the positioning error is less than 5% in outdoor NLOS propagation environment.

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Section: Scattering Region Modelmentioning

confidence: 99%

Multipath Cluster-Assisted Single Station Localization Based on SSA-GA in Outdoor NLOS Environment

Liao

Wang

et al. 2022

Wireless Communications and Mobile Computing

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“…Emitter location technology is usually called passive location technology [1–3]. Generally, passive positioning system can be divided into single‐station positioning system [4] and multi‐station positioning system [5] according to the number of observers. In this work, we deal with the multi‐station location method, because it can obtain more measurement information to improve the localisation accuracy.…”

Section: Introductionmentioning

confidence: 99%

Novel frequency of arrival‐based emitter localisation methods based on multiple moving observers

Wang

Yin

Chen³

et al. 2022

IET Signal Processing

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It is well known that the Doppler frequency shift contains the emitter location information. The problem of emitter location based on frequency of arrival (FOA) measurements of multiple moving observers is focussed. In contrast to most relevant works, the newly proposed positioning methods consider the influence of signal frequency deviation due to source instability and present two mathematical models of the frequency deviation. The first model assumes that the frequency offset is a small random parameter. A two-stage closed-form location method (called method a) is proposed. In stage 1, a set of pseudo-linear equations are established according to the geometric relationship between the observers and emitter, so as to obtain an intermediate estimate of source position. Stage 2 returns to the original FOA measurement model and uses the estimation result in stage 1 to construct the second set of pseudo-linear equations, yielding the final positioning result. The second model assumes that the signal frequency deviation is a large deterministic parameter. We propose an alternative two-stage localisation method (called method b). In stage 1, a decoupling optimisation algorithm is developed based on the pseudo-linear equations derived in stage 1 of method a, and intermediate estimates of the source position and frequency deviation are obtained successively. Stage 2 returns to the original FOA measurement model again and forms the second set of pseudo-linear equations, yielding the final closed-form solutions of emitter position and frequency offset. Both methods are proved analytically to achieve the Cramér-Rao bound (CRB) under the moderate noise level. Simulation results demonstrate the superior performance of the new methods. K E Y W O R D Sclosed-form solution, Cramér-Rao bound (CRB), Doppler shift, emitter localisation, frequency-of-arrival (FOA), performance analysis, pseudo-linear equation | INTRODUCTIONIt is well known that emitter location technology has been widely applied in industrial and information fields, such as smart city, automatic driving, navigation and telemetry, emergency rescue, safety management, etc. It is also an indispensable supporting technology in the field of national defence security, such as target monitoring, situational awareness and strategic early warning. Emitter location technology is usually called passive location technology [1][2][3]. Generally, passive positioning system can be divided into single-station positioning system [4] and multi-station positioning system [5] according to the number of observers. In this work, we deal with the multi-station location method, because it can obtain more measurement information to improve the localisation accuracy.Azimuth-of-arrival (AOA) [6-8] and time-difference-ofarrival (TDOA) [9][10][11] are two kinds of measurements that are commonly used in multi-station positioning approaches. However, it is noteworthy that the former requires an antennaThis is an open access article under the terms of the Creative Commons Attribution License, wh...

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Single Base Station Positioning based on Multipath Parameter Clustering in NLOS Environment

Cited by 2 publications

References 19 publications

Multipath Cluster-Assisted Single Station Localization Based on SSA-GA in Outdoor NLOS Environment

Multipath Cluster-Assisted Single Station Localization Based on SSA-GA in Outdoor NLOS Environment

Novel frequency of arrival‐based emitter localisation methods based on multiple moving observers

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