Advent of practical UWB localization: (R)Evolution in UWB antenna research

Sipal, Vit; John, Matthias; Neirynck, Dries; McLaughlin, M. R.; Ammann, Max J.

doi:10.1109/eucap.2014.6902082

Cited by 10 publications

(5 citation statements)

References 8 publications

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“…The performance of the antenna has a direct impact on positioning accuracy and coverage. To ensure optimal performance for UWB positioning applications, the antenna should possess key properties such as omnidirectionality and minimal changes in group delay with variations in angle [ 17 ].…”

Section: Gps-free Wireless Precise Positioning System Designmentioning

confidence: 99%

GPS-Free Wireless Precise Positioning System for Automatic Flying and Landing Application of Shipborne Unmanned Aerial Vehicle

Lo,

Chang,

Wei

et al. 2024

Sensors

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This research is dedicated to developing an automatic landing system for shipborne unmanned aerial vehicles (UAVs) based on wireless precise positioning technology. The application scenario is practical for specific challenging and complex environmental conditions, such as the Global Positioning System (GPS) being disabled during wartime. The primary objective is to establish a precise and real-time dynamic wireless positioning system, ensuring that the UAV can autonomously land on the shipborne platform without relying on GPS. This work addresses several key aspects, including the implementation of an ultra-wideband (UWB) circuit module with a specific antenna design and RF front-end chip to enhance wireless signal reception. These modules play a crucial role in achieving accurate positioning, mitigating the limitations caused by GPS inaccuracy, thereby enhancing the overall performance and reception range of the system. Additionally, the study develops a wireless positioning algorithm to validate the effectiveness of automatic landing on the shipborne platform. The platform’s wave vibration is considered to provide a realistic landing system for shipborne UAVs. The UWB modules are practically installed on the shipborne platform, and the UAV and the autonomous three-body vessel are tested simultaneously in the outdoor open water space to verify the functionality, precision, and adaptability of the proposed UAV landing system. Results demonstrate that the UAV can autonomously fly from 200 m, approach, and automatically land on the moving shipborne platform without relying on GPS.

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Section: Gps-free Wireless Precise Positioning System Designmentioning

confidence: 99%

GPS-Free Wireless Precise Positioning System for Automatic Flying and Landing Application of Shipborne Unmanned Aerial Vehicle

Lo,

Chang,

Wei

et al. 2024

Sensors

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“…The ranging protocol presented in [27] was used and the CIR envelope obtained from the last anchor reply was recorded on the tag. This was done for five different tag antenna configurations, namely a Broadspec Time Domain Antenna [28], a spline antenna analyzed in detail in in [18], this spline antenna with copper arms soldered to its ground, and a Partron Dielectric Chip Antenna [29] with and without carbon plates in its vicinity, all shown in Figure 2. The Broadspec Time Domain antenna was used on the transmitter.…”

Section: Channel Impulse Responsementioning

confidence: 99%

“…It is based on the angle-dependent antenna transfer function, which leaves its mark in the measured CIR of a UWB propagation channel. UWB propagation channels in general are discussed in [16], and in [17,18,19] with a focus on the antenna transfer functions. Distortions of the measured CIR due to angle-dependent antenna transfer functions can lead to angle-dependent errors in the timestamps provided by leading edge detection algorithms.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wideband Angle of Arrival Estimation Based on Angle-Dependent Antenna Transfer Function

Ledergerber

D’Andrea

2019

Sensors

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Ultra-wideband radio signals are used in communication, indoor localization and radar systems, due to the high data rates, the high resilience to fading and the fine temporal resolution that can be achieved with a large bandwidth. This paper introduces a new method to estimate the angle of arrival of ultra-wideband radio signals with which existing time-of-flight based localization and radar systems can be augmented at no additional hardware cost. The method does not require multiple transmitter or receiver antennas, or relative motion between transmitter and receiver. Instead, it is solely based on the angle-dependent impulse response function of ultra-wideband antennas. Datasets on which the method is evaluated are publicly available. The method is further applied to a localization problem and it is shown how a robot can self-localize solely based on these angle of arrival estimates, and how they can be combined with time-of-flight measurements. Even though existing angle of arrival techniques that use multiple antennas show better accuracy, the method presented herein looks promising enough to be developed further and could potentially lead to electronically and mechanically simpler angle of arrival estimation technology.

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“…Therefore, substantially different antenna topologies are required [11], exhibiting both excellent frequency-and timedomain characteristics. Moreover, UWB antenna design for practical systems should focus on guaranteeing the desired performance in the envisaged deployment scenarios, rather than being optimized in a stand-alone free-space set-up [12], [13]. On the one hand, a plethora of IR-UWB antennas are found in current literature [11], [14], [15].…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Impulse-Radio Ultra-Wideband Cavity-Backed Slot Antenna in Stacked Air-Filled Substrate Integrated Waveguide Technology

Brande

Lemey

Vanfleteren

et al. 2018

IEEE Trans. Antennas Propagat.

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An Impulse-Radio Ultra-Wideband (IR-UWB) cavitybacked slot antenna covering the [5.9803; 6.9989] GHz frequency band of the IEEE 802.15.4a-2011 standard is designed and implemented in airfilled substrate-integrated-waveguide (AFSIW) technology for localization applications with an accuracy of at least 3 cm. By relying on both frequency-and time-domain optimization, the antenna achieves excellent IR-UWB characteristics. In free-space conditions, an impedance bandwidth of 1.92 GHz (or 29.4%), a total efficiency higher than 89%, a front-to-back-ratio of at least 12.1 dB and a gain higher than 6.3 dBi are measured in the frequency domain. Furthermore, a system fidelity factor larger than 98% and a relative group delay smaller than 100 ps are measured in the time domain within the 3dB-beamwidth of the antenna. As a result, the measured time-of-arrival of a transmitted Gaussian pulse, for different angles of arrival, exhibits variations smaller than 100 ps, corresponding to a maximum distance estimation error of 3 cm. Additionally, the antenna is validated in a real-life worst-case deployment scenario, showing that its characteristics remain stable in a large variety of deployment scenarios. Finally, the difference in frequency-domain and time-domain performance is studied between the antenna implemented in AFSIW and in dielectric-filled SIW (DFSIW) technology. We conclude that DFSIW technology is less suitable for the envisaged precision IR-UWB localization application. Index Terms-Cavity-backed slot antenna, air-filled substrateintegrated-waveguide, impulse-radio ultra-wideband, high efficiency, indoor localization.

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Advent of practical UWB localization: (R)Evolution in UWB antenna research

Cited by 10 publications

References 8 publications

GPS-Free Wireless Precise Positioning System for Automatic Flying and Landing Application of Shipborne Unmanned Aerial Vehicle

GPS-Free Wireless Precise Positioning System for Automatic Flying and Landing Application of Shipborne Unmanned Aerial Vehicle

Ultra-Wideband Angle of Arrival Estimation Based on Angle-Dependent Antenna Transfer Function

Highly Efficient Impulse-Radio Ultra-Wideband Cavity-Backed Slot Antenna in Stacked Air-Filled Substrate Integrated Waveguide Technology

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