The stability and reliability of vehicle sensordata such as high-precision integrated inertial navigation system (INS), millimeter wave radar (MMW), laser radar (LIDAR) are very important for the functional realizati...
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This study utilizes the Texas Instruments AWR1642BOOST 77 GHz millimeter-wave radar module to collect raw radardata. An All-Phase FFT is performed in the fas-time dimension to execute range FFT and obtain the complet...
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ISBN:
(纸本)9798331507800;9798331507794
This study utilizes the Texas Instruments AWR1642BOOST 77 GHz millimeter-wave radar module to collect raw radardata. An All-Phase FFT is performed in the fas-time dimension to execute range FFT and obtain the complete phase signal. The arctangent algorithm is applied to identify the range bin corresponding to the human target and extract phase information. The phase signal is then demodulated and differentiated. The demodulated phase signal is separated using the Variational Nonlinear Chirp Mode Decomposition (VNCMD) algorithm. Compared to traditional methods (band-pass filtering, EMD, VMD) for processing respiration and heartbeat signals, the proposed algorithm demonstrates superior accuracy, validated against reference signals from the Texas Instruments ECG sensor ADSI292R.
Full-duplex communication and dual-function radar communication (DFRC) techniques are considered as key solutions to cope with the scarcity of spectrum resources in the wireless environment. This study investigates th...
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ISBN:
(纸本)9798400709005
Full-duplex communication and dual-function radar communication (DFRC) techniques are considered as key solutions to cope with the scarcity of spectrum resources in the wireless environment. This study investigates the optimization of subcarrier selection and system power allocation in a full-duplex DFRC system that meets predefined radar performance requirements to maximize the communication data rate (CDR). Specifically, under preset performance constraints, the system sequentially selects the most suitable sub-carriers for radar and communication and maximizes the CDR of the multicarrier DFRC system by optimizing power allocation. Then, by combining cyclic minimization algorithm, Karush-Kuhn-Tucker optimality conditions and water-filling power allocation algorithm, we designed an effective method for dividing and solving the above problem. Finally, several numerical simulation results are provided to verify the theoretical conclusions and validity of the proposed optimization strategy.
Multi-source perception fusion positioning technology based on heterogeneous sensors is a key research area in the field of target positioning. The heterogeneous sensor positioning system composed of radar and infrare...
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The combination of laser radar and IMU inertial navigation technology can establish a real-time point cloud map of the vehicle’s surrounding environment. The combination of navigation technology can accurately restor...
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The number of individuals within a group is crucial information for the correct association, robust tracking, and situation awareness. Traditional methods using the range profile's peaks are not suitable when targ...
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Respiratory and cardiac rates can be estimated by analyzing a spectrum of phase modulation in a radar echo of an individual. However, the phase modulations corresponding to respiratory and cardiac rates are linearly m...
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This paper presents a real-time algorithm developed for an ultra-wideband (UWB) radarsensor that performs comprehensive gait and respiration analysis. The method (1) estimates feet trajectory and respiration signals ...
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radarsensors are commonly used in Advanced Driver Assistance Systems (ADAS) to detect surrounding objects. radar signals pass a signal processing chain to compute the range, the velocity and the angular position of p...
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With the progression of artificial intelligence, there has been substantial advancement in autonomous driving technology. However, even the most advanced systems may confront failures in certain corner cases, necessit...
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ISBN:
(纸本)9798350393811;9798350393804
With the progression of artificial intelligence, there has been substantial advancement in autonomous driving technology. However, even the most advanced systems may confront failures in certain corner cases, necessitating enhanced analytical approaches. Traditional approaches focused on the numerical analysis of isolated sensordata, are often insufficient for deriving meaningful insights in such situations. To address this inadequacy, we propose a visual analytics approach, crafted to aid domain experts in performing analyses and extracting system improvements from cases with unexpected behaviors. This approach intricately integrates extensive driving scenarios and low-level module behaviors into the autonomous driving decision-making process, utilizing rich visualizations and an interface for interactive exploration and systematic synthesis of findings. Uniquely, our system opens the "black box" of modules in the decision-making pipeline during corner cases, taking into account both the overall decision-making pipeline and the fine-grained behaviors of the modules in the pipeline, setting our approach apart from previous works. To validate our system's effectiveness, we perform two case studies, inviting domain experts for evaluation, and the results confirm our system's efficacy in allowing experts to obtain crucial insights into autonomous driving systems.
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