Results 11 to 20 of about 46,791 (149)
Integrated Waveform Design of Radar and Communication Based on Chirp-rate Hopping Modulation [PDF]
RadioengineeringThe increasing demand for spectrum resources and the need for reducing the burden of modern electronic combat platforms have prompted the development of integrated radar and communication systems.
G. Q. Zhang +4 more
doaj +2 more sources
SAR Waveform Diversity Using PN-Sequence and Its Optimization With Genetic Algorithm
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingWaveform diversity is an important technique to suppress range ambiguities and extend the observation coverage of synthetic aperture radar (SAR) without sacrificing spatial resolution and power consumption.
Raito Suzuki, Akira Hirose, Ryo Natsuaki
doaj +2 more sources
Enhancement of doppler resolution for chirp-sequence modulated radars
European Radar Conference, 2017 Roos, Fabian +4 more
semanticscholar +3 more sources
Automotive Frequency Modulated Continuous Wave Radar Interference Reduction Using Per-Vehicle Chirp Sequences [PDF]
Sensors, 2018 Recently, many automobiles adopt radar sensors to support advanced driver assistance system (ADAS) functions. As the number of vehicles with radar systems increases the probability of radar signal interference and the accompanying ghost target problems become serious.
Youn-Sik Son +2 more
openaire +3 more sources
IEEE Journal of Microwaves, 2022 For multistatic radar networks in the upper mm-wave range with a large spacing between its radar sensor nodes, a coherent signal distribution is very complex and thus very costly.
Andre Durr +5 more
doaj +1 more source
System Performance of a Scalable 79 GHz Imaging MIMO Radar With Injection-Locked LO Feedthrough
IEEE Journal of Microwaves, 2021 The estimation of the direction-of-arrival in a coherent multi-channel radar system requires the distribution of the high-frequency local oscillator signal to all hardware channels.
Dominik Schwarz +5 more
doaj +1 more source
A Maximum-Likelihood-Based Two-User Receiver for LoRa Chirp Spread-Spectrum Modulation
IEEE Internet of Things Journal, 2022 Long Range (LoRa) is an emerging low-power wide-area network technology offering long-range wireless connectivity to Internet of Things (IoT) devices. For energy efficiency reasons, LoRa end nodes implement a nonslotted ALOHA multiple access scheme to ...
Mathieu Xhonneux +4 more
semanticscholar +1 more source
Sensors, 2021 In synthetic aperture radar (SAR) imaging, geometric resolution, sidelobe level (SLL) and signal-to-noise ratio (SNR) are the most important parameters for measuring the SAR image quality.
Wei Xu +5 more
doaj +1 more source
System Performance of a 79 GHz High-Resolution 4D Imaging MIMO Radar With 1728 Virtual Channels
IEEE Journal of Microwaves, 2022 Future driver assistance and autonomous driving systems require high-resolution 4D imaging radars that provide detailed and robust information about the vehicle's surroundings, even in poor weather or lighting conditions.
Dominik Schwarz +3 more
doaj +1 more source
AFDM Chirp-Permutation-Index Modulation with Quantum-Accelerated Codebook Design [PDF]
Asilomar Conference on Signals, Systems and ComputersWe describe a novel index modulation (1M) scheme exploiting a unique feature of the recently proposed affine frequency division multiplexing (AFDM) in doubly-dispersive (DD) channels.
H. Rou +4 more
semanticscholar +1 more source