Results 31 to 40 of about 260,315 (307)
The next generation airborne polarimetric Doppler weather radar [PDF]
Geoscientific Instrumentation, Methods and Data Systems, 2014 Results from airborne field deployments emphasized the need to obtain concurrently high temporal and spatial resolution measurements of 3-D winds and microphysics.
J. Vivekanandan +6 more
doaj +1 more source
A Waveform and Velocity Ambiguity Resolution Method for Corner Radar
Applied SciencesMillimeter-wave radar is experiencing an increasing demand for higher resolution and elevation measurement, necessitating its evolution from 3D millimeter-wave radar systems to 4D millimeter-wave radar.
Yu Liu, Dan Zhang, Shuo Wang, Jiazai Liu
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Structure-based joint estimation algorithm for distributed coherent aperture radar
The Journal of Engineering, 2020 In a distributed coherent aperture radar, the time delay differences and the phase differences among received echoes from each pair of transmitter–receiver should be estimated and then can be compensated to realise coherent processing.
Yin Liu
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High Resolution MIMO Radar Sensing With Compressive Illuminations
IEEE Transactions on Signal Processing, 2022 We present a compressive radar design that combines multitone linear frequency modulated (LFM) waveforms in the transmitter with a classical stretch processor and sub-Nyquist sampling in the receiver. The proposed compressive illumination scheme has fewer random elements resulting in reduced storage and complexity for implementation than previously ...
Nithin Sugavanam +2 more
openaire +2 more sources
暴雨灾害, 2022 Reflectivity and Doppler velocity measurements from the new generation weather radar provide important input for the identification and early warning of severe storms and tornadoes.
Yanjiao XIAO +3 more
doaj +1 more source
Multi-Channel Super-Resolution Reconstruction Model Based on Dual-Band Weather Radar Fusion
Remote SensingDual-band weather radar networks enable complementary multi-radar observations, improving the accuracy, three-dimensional characterization, and early warning capability for severe convective weather.
Siran Yang +6 more
doaj +1 more source
Back projection algorithm-based GEO SAR real-time quick Look imaging system
The Journal of Engineering, 2019 Geosynchronous earth orbit synthetic aperture radar (GEO SAR) has the advantages of short revisit period and wide observation range. However, compared with low earth orbit SAR (LEO SAR), GEO SAR has the distinct characteristics of long synthetic aperture
Qingjun Zhang +6 more
doaj +1 more source
Super-Resolution Technique of Multi-Radar Fusion 2D Imaging Based on ExCoV Algorithm in Low SNR
Remote Sensing, 2023 Limited by the hardware, the bandwidth of the transmitted signal is not wide enough for super resolution; this is the same for cross resolution, which is limited by the observation angle.
Dawei Song, She Shang, Dazhi Ding
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Optical Simulation of Radar Resolution*† [PDF]
Journal of the Optical Society of America, 1959 It is difficult and expensive to evaluate with radar equipment the resolution required in order that a given target be detectable. In an effort to obtain this information more cheaply and easily, an optical simulator has been constructed in which the very high resolution in an optical aerial photograph has been degraded by known amounts.
Rawcliffe, R.D. +2 more
openaire +1 more source
Arthritis Care &Research, EarlyView.Objective Obesity, defined by body mass index (BMI) ≥30 kg/m2, is a risk factor for functional limitations in people with knee osteoarthritis (OA). However, function varies among such individuals. Our objective was to evaluate the implications of obesity subtypes on longitudinal patterns of physical functioning in people with or at risk for knee OA ...
Kristine Godziuk +7 more
wiley +1 more source