radar beam
Statistical analysis and modelling of weather radar beam propagation conditions in the Po Valley (Italy)
... weather radar beams occurs when the atmospheric thermodynamic vertical structure produces a refractivity gradient value outside its normal ...the beam height with the distance and a reduction of the maximum ...
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Behaviour of migrating birds exposed to X band radar and a bright light beam
... the radar beam was supported by the flight data for birds tracked at levels below 300 m; this was true when all tracks were included (Table 1) and when the flight directions of the birds were restricted to ...
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Radar Identification of Hostile Fire by Means of the Electromagnetic Complex Natural Resonances of Projectiles
... the radar system, and hence the aspect will alter significantly during illumination by a single ...the radar beam, rather than heading radially toward the ...the radar system will have ...
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Application of the Fractional Fourier Transform to Moving Train Imaging
... ground-based radar is not studied widely as the ground moving target imaged by airborne or spaceborne ...the radar beam during the imaging ...
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Multi beam observations of cosmic radio noise using a VHF radar with beam forming by a Butler matrix
... MST radar on the North-Norwegian island Andøya ...Alomar Radar Sys- tem (MAARSY) replaces the previous ALWIN radar which has been successfully operated for more than 10 ...MAARSY radar ...
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Target Tracking Radar
... tracking radar measures the coordinates of a target and provides data which may be used to determine the target trajectory and to predict its future ...Tracking Radar TTR is important to military radars as ...
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Airborne laser scan data: a valuable tool with which to infer weather radar partial beam blockage in urban environments
... partial beam blockages (Giangrande and Ryzhkov, 2005; Lang et ...when radar observations are in snow or ice (Zhang et ...weather radar are still in single ...accurate radar visibility maps can ...
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Retrieval of Soil Moisture Content from Microwave Backscattering Using a Modified Iem Model
... of radar beam includes both the surface reflection term and the volumetric reflection term, which is simplified as the internal reflections from the interfaces of the multilayer ...
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Enhanced radar precipitation estimates using a combined clutter and beam blockage correction technique
... Weather radar observations are currently the most reliable method for remote sensing of ...of radar obser- vations and may limit seriously automated quantitative ap- plications of radar precipitation ...
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Investigation of horizontal structures at mesospheric altitudes using coherent radar imaging
... Polar Mesospheric Summer Echoes (PMSE) are a phe- nomenon in the middle atmosphere at polar latitudes, where VHF radar waves are backscattered at mesospheric heights (e.g. Balsley et al., 1979; Hoppe et al., ...
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Design and Implementation of Scalable Beam Steering Control System for Phased Array Radar
... the beam mechanical positing of large and heavy antenna is needed, to overcome this disadvantage phased array antenna is used to scan a beam electronically in particular angle by changing its phase of each ...
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Antena Array Mikrostrip Dual Beam Untuk Aplikasi Sensor Radar Doppler
... sensor radar doppler dapat mengukur kecepatan relatif antara mobil dan obstacle sehingga dapat digunakan untuk menghindari kecelakaan dan hanya memantau kepadatan lalu lintas yang ...dual beam untuk ...
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The application of aperture synthesis techniques to satellite radar altimetry
... provide 5m ground resolution and —10m height extraction precision (Burke and Dixon, 1988). In addition to the moderate height resolution, optical stereo imagery has another important disadvantage, which is its ...
239
A comparison of overshoot modelling with observations of polar mesospheric summer echoes at radar frequencies of 56 and 224 MHz
... MORRO radar at 56 MHz were used together with the EISCAT Heating Facility (Rietveld et ...where radar backscatter after the heater was switched on showed an immediate increase (onset overshoot) instead of ...
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The next generation airborne polarimetric Doppler weather radar
... “pencil” beam that will be scanned in azimuth and ...The beam will then be steered to an- other position and another pair of pulses will be transmit- ...each radar is required to cover can be divided ...
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Incorporating Satellite Precipitation Estimates into a Radar-Gage Multi-Sensor Precipitation Estimation Algorithm
... for radar QPE correction and multisensor ...ingested radar-only precipitation estimates, including the Digital Precipitation Array (DPA) generated by the WSR-88D Precipitation Processing System (PPS), rain ...
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Millimeter-Wave Elliptical Lens Antenna for Fan-Beam Monopulse Applications
... cavity-backed aperture-coupled elliptical patch antenna array with sum/difference ports is located at the back of the elliptical lens as the feed antenna. The lens antenna is designed, fabricated and tested at 35 GHz. ...
9
Improved Motion Compensation for Wide-Beam Wide-Swath Airborne SAR
... The classical two-step MoCo [2] performs well in the narrow-beam SAR systems because of the so-called center-beam approximation (CBA) principle [3]. When it is used to process the wide-beam SAR data, ...
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Enhancing the consistency of spaceborne and ground-based radar comparisons by using beam blockage fraction as a quality filter
... (i.e. beam blockage) when we es- timate GR calibration ...partial beam block- age register weaker signals ...the beam-blocked bins introduce scatter, and as- signing them low weights decreases the ...
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Design of Radar to Detect a Target at an Arbitrary Standoff Range
... the radar is described in more detail, starting with the ...A radar determines the location of a target in range and angle, but the echo signal provides information about the nature of the ...
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