Passive extended double-sided two-way ranging with alternative calculation

Horváth, Kristóf; Ill, Gergely; Milánkovich, Ákos

doi:10.1109/icuwb.2017.8250972

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…A strong engineering approach of error propagation is found in [5]. The paper proves the error reduction in Cooperative Position Protocol [6] by applying the Alternative Double-Sided Two-Way Ranging method [7] for range estimation.…”

Section: Introductionmentioning

confidence: 82%

ADS_TWR_rev2.pdf

Domuta¹

2019

Preprint

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<div>The asymmetrical double-sided two-way ranging</div><div>means uneven session duration, as a result clocks errors</div><div>propagate differently in the two TWR measurement sessions. The article proposes a method of the errors compensation by weighted mean of two TWR measurements and minimization of error expectation. By this method, the offset error is cancelled, the full-scale error is not diminished, the cumulated noise variance is attenuated, and the correlated noises variance is strongly diminished. The error analysis shows that the minimum</div><div>lower band is reached by SDS-TWR.</div>

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Section: Introductionmentioning

confidence: 82%

ADS_TWR_rev2.pdf

Domuta¹

2019

Preprint

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“…This combination allowed to increase the ranging accuracy compared to previous SS-TWR-based passive ranging at the expense of adding a packet to the active ranging sequence. In [20] the same authors replaced SDS-TWR with Alternative Double-Sided Two-Way Ranging (AltDS-TWR), to eliminate the response delay time constraint that exists in SDS-TWR. Shah et al present in [21] three methods of passive ranging coupled with active ranging.…”

Section: Introductionmentioning

confidence: 99%

Novel Active-Passive Two-Way Ranging Protocols for UWB Positioning Systems

et al. 2022

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“…Based on a recent work [17], where state-of-the-art TWR methods have been studied respecting their estimation performance, the AltDS-TWR method is most preferred in real-world scenarios due to its robustness against variation of reply-delay time and clock offsets. Interestingly, the alternative double-sided TWR with passive ranging (AltDS-TWR&PR) [18] method has been proposed recently as an improvement over the symmetric double-sided TWR with passive ranging (SDS-TWR&PR) [19] method, where the TOFs from a mobile node to several anchor nodes can be obtained simultaneously with a minimal number of packets over the air. However, the method requires that a ranging session can only be initiated by an anchor node and lacks flexibility in implementation for a variety of RTLS applications.…”

Section: Introductionmentioning

confidence: 99%

“…Step 8: Node M computesP M using Equations (18) and 20, node A computesP A using Equations (19) and 20, while each passive anchor node…”

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confidence: 99%

Multiple Simultaneous Ranging in IR-UWB Networks

Shah

Demeechai

2019

Sensors

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Growth in the applications of wireless devices and the need for seamless solutions to location-based services has motivated extensive research efforts to address wireless indoor localization networks. Existing works provide range-based localization using ultra-wideband technology, focusing on reducing the inaccuracy in range estimation due to clock offsets between different devices. This is generally achieved via signal message exchange between devices, which can lead to network congestion when the number of users is large. To address the problem of range estimation with limited signal messages, this paper proposes multiple simultaneous ranging methods based on a property of time difference of reception of two packets transmitted from different sources in impulse-radio ultra-wideband (IR-UWB) networks. The proposed method maintains similar robustness to the clock offsets while significantly reducing the air time occupancy when compared with the best existing ranging methods. Experimental evaluation of ranging in a line-of-sight environment shows that the proposed method enables accurate ranging with minimal air time occupancy.

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Passive extended double-sided two-way ranging with alternative calculation

Cited by 15 publications

References 5 publications

ADS_TWR_rev2.pdf

ADS_TWR_rev2.pdf

Novel Active-Passive Two-Way Ranging Protocols for UWB Positioning Systems

Multiple Simultaneous Ranging in IR-UWB Networks

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