- PAMI2024
- mmWave
- conference
- mmWave
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Beat Frequency Calculation
Millimeter-wave radar (MWIR) is a type of radar technology that uses microwaves with frequencies ranging from 30 to 300 GHz. One key parameter of MWIR radar systems is the beat frequency, which determines range resolution and target detection capabilities. To calculate the beat frequency, pulse width, repetition rate, and wavelength must be determined. The beat frequency affects other aspects of MWIR radar systems, such as target tracking, waveform design, and receiver architecture. Accurate calculation and optimization of the beat frequency are essential for optimal performance and reliability in MWIR radar systems.
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Beamforming for 5G MMW Communications
Beamforming is a technique used in 5G Massive MIMO (MMW) communication systems to improve network performance and efficiency. By directing radio signals towards specific directions or angles, beamforming reduces interference from other devices and increases signal quality, coverage, and energy efficiency. Applications of beamforming include mobile networks, wireless sensor networks, industrial automation, and smart cities.
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Beamforming and Direction Finding
Millimeter wave radar (mmWave radar) operates at frequencies above 30 GHz and offers advantages such as high resolution, long range, and low clutter. However, beamforming and direction finding (DF) present unique challenges. Beamforming focuses a radar signal on a specific target while suppressing interference from other targets or noise. Digital beamforming uses digital signal processing algorithms for real-time adjustments, while analog beamforming involves modulating the transmitter's frequency. Direction finding determines the direction of a radio signal source by analyzing phase and amplitude differences between transmitted and received signals. Applications include automotive safety systems, military applications, and wireless communications.
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Autonomous Driving
Autonomous driving is revolutionizing transportation with the use of millimeter-wave radar technology. This high frequency radar can provide highly accurate measurements of the distance between vehicles and obstacles, allowing for real-time decision making in complex environments such as city streets. It also enables improved communication between autonomous vehicles by sharing data about their position, speed, and direction of travel. Despite challenges in developing robust sensors and algorithms, the future looks bright for millimeter-wave radar in autonomous driving, offering new possibilities for safe navigation, improved efficiency, and enhanced safety in urban environments.
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Antenna Design for Millimeter-Wave Radar
Millimeter-wave radar (mmWave radar) is a cutting-edge technology with applications in various domains. Antenna design is crucial as it determines the range, resolution, and SNR of the radar system. Beamforming and handling electromagnetic noise are key factors affecting performance. Directional arrays have improved SNR and range but come with high cost and limited flexibility. Parabolic apertures offer improved directivity and lower power consumption but face challenges in manufacturing costs and lack of flexibility. Hybrid arrays combining elements of both types can provide improved performance while reducing costs.