In this paper, a novel miniaturized frequency selective rasorber (FSR) with high in-band transmission at X-band and wide absorption band in the C-band is proposed. The FSR element exhibits a third-order bandpass filte...
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ISBN:
(纸本)9798350389968
In this paper, a novel miniaturized frequency selective rasorber (FSR) with high in-band transmission at X-band and wide absorption band in the C-band is proposed. The FSR element exhibits a third-order bandpass filter response to provide high in-band transmission and drop-off out-of-band property. Simulated results show that, at the center frequency of 10.0GHz the relative bandwidth for transmission reaches 27.96%, while the relative bandwidth for absorption exceeding 90% achieves 59%.
The wind deviation phenomenon of transmission lines has become one of the important reasons leading to grid tripping. Effective wire wind deviation monitoring is an important part of transmission line condition monito...
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This paper introduces a pioneering approach to the design of an ultra-wideband (UWB) microstrip bandpass filter featuring a narrow notch. The proposed filter incorporates two identical high-impedance short-circuited s...
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ISBN:
(纸本)9798350371611;9788396972613
This paper introduces a pioneering approach to the design of an ultra-wideband (UWB) microstrip bandpass filter featuring a narrow notch. The proposed filter incorporates two identical high-impedance short-circuited stubs, one low-impedance short-circuited stub, and two identical sections with three parallel-coupled lines. The electrical length of both the short-circuited stubs and the parallel-coupled lines is meticulously set to a quarter-wavelength at the center frequency of the desired passband. Additionally, a very short-length open-circuited stub is strategically placed at the end of one of the outer lines in a parallel-coupled line section. This configuration enables the filter to exhibit a narrow notched band within the passband, effectively attenuating unwanted WLAN signals. The filter is designed utilizing a RT/Duriod 6010 microstrip substrate characterized by a relative dielectric constant of 10.8 and a thickness of 1.27 mm. The design of the proposed filter is successfully realized in theory and verified by full-wave electromagnetic simulation and the experiment. The filter shows an UWB passband from 2.1 to 11.9 GHz. An excellent agreement between the expected and measured results is obtained.
Multi-sensor fusion is currently the main way of autonomous driving perception. Among them, radar has been paid more and more attention by researchers due to its low cost and strong anti- interference. The fusion perc...
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ISBN:
(纸本)9798350399462
Multi-sensor fusion is currently the main way of autonomous driving perception. Among them, radar has been paid more and more attention by researchers due to its low cost and strong anti- interference. The fusion perception method of radar and image has gradually become a hot research field. Nevertheless, the high-noise data of radar brings the challenge of uncertain perception results. In order to solve these problems, this paper proposes a Transformer-based 2D object detection algorithm with the fusion of radar and images, which can effectively detect objects. And for the problem of uncertainty in perception results, a method for modeling regression and classification uncertainty is proposed. We validate the proposed method on the NuScenes dataset. Experimental results show that our method achieves higher detection performance compared to the baseline model and can estimate the uncertainty of the proposed algorithm in real traffic scenarios.
Millimeter-wave radar is the primary sensor for enabling autonomous driving and ADAS functions. MIMO technology has demonstrated its effectiveness to deliver precise angular estimation of objects using few antennas, m...
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The automotive radarsensor is an essential sensor for intelligent transportation systems. However, the increasing number of such systems leads to mutual interference between sensors. radar interference can be a sever...
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Effective Sea state monitoring in coastal zones is crucial for coastal safety and environmental management. This research introduces a methodology leveraging a low-cost Frequency Modulated Continuous Wave (FMCW) radar...
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sensortechnology has impacted and transformed several commercial and military industries, from automotive to defense, to personal security applications. Adopting Computer Vision techniques such as Object Detection he...
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ISBN:
(纸本)9798350332865
sensortechnology has impacted and transformed several commercial and military industries, from automotive to defense, to personal security applications. Adopting Computer Vision techniques such as Object Detection helps boost the system's capabilities in tracking and classification. A previous study looked at optimizing a radar System that relied on the processing power of the Raspberry Pi 4. Since the Raspberry Pi 4 is not an ideal device for a real-time environment, this experiment aims to improve on that aspect by utilizing the processing power of the Jetson TX2 to boost the system's speed and reduce latency between the Object Detection and Velocity calculation. The experiment will be repeated using the Jetson hardware to mimic the same scenarios in common tracking and surveillance systems.
This work presents the use of frequency-modulated continuous wave (FMCW) radartechnology combined with a machine learning (ML) model to differentiate between Normal and Abnormal Breath Rates (BR). The recommended sys...
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Indoor multi-person tracking is a widely explored area of research. However, publicly available datasets are either oversimplified or provide only visual data. To fill this gap, our paper presents the RAV4D dataset, a...
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