Results 41 to 50 of about 631,255 (210)

First-order Sea Clutter Modeling and Simulation of High Frequency Passive Radar

open access: yesLeida xuebao, 2015
High Frequency (HF) passive radar is a typical bistatic radar, and the modeling and simulation of sea clutter in bistatic radar are worth researching for HF passive radar.
Cheng Feng, Zeng Qing-ping, Gong Zi-ping
doaj   +1 more source

The Dynamic Sea Clutter Simulation of Shore-Based Radar Based on Stokes Waves

open access: yesRemote Sensing, 2022
The sea clutter model based on the physical sea surface can simulate radar echo at different times and positions and is more suitable for describing dynamic sea clutter than the traditional models based on statistical significance. However, when applying
Feng Luo   +3 more
doaj   +1 more source

Modeling rainfall drop size distribution moments using an S‐band polarimetric radar in complex terrain

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Using S‐band dual‐polarization radar and disdrometers during PRECIP 2022 in Taiwan, we analyze a Mei‐Yu frontal event with widespread stratiform rain and embedded convection. Multiple disdrometers are used to create a novel drop size distribution model for S‐band radars resolving both the drizzle and precipitation modes. The model reveals both inferred
Ian C. Cornejo   +3 more
wiley   +1 more source

The Doppler Spectra of Medium Grazing Angle Sea Clutter; Part 1: Characterisation [PDF]

open access: yes, 2016
This paper is concerned with the characterisation of Doppler spectra from high range resolution X-band radar sea clutter observed from an airborne platform over the range of grazing angles, 15° to 45°.
Rosenberg, L   +3 more
core  

Decoupling Clutter Suppression and Target Localization: A Two-Stage Framework for Robust Radar Detection

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Complex sea clutter remains a major challenge for radar target detection because of its non-Gaussian statistics, heavy-tailed fluctuations, and pronounced nonstationary behavior, which severely degrade the reliability of weak-target detection.
Zhengyang Yi   +6 more
doaj   +1 more source

Clutter Suppression Approach for End-Fire Array Airborne Radar Based on Adaptive Segmentation

open access: yesIEEE Access, 2019
End-fire array antenna is a kind of special radar antenna with beam pointing perpendicular to the normal direction of the array. Because of its low profile and directional radiation characteristics, it is especially suitable for blind zone compensation ...
Yongwei Li   +3 more
doaj   +1 more source

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi   +5 more
wiley   +1 more source

MODELING OF BISTATIC RADAR CLUTTER

open access: yesPerner’s Contacts, 2012
The bistatic radar forms a basic part of multistatic radar systems for Air Traffic Control. The effort in this article is to provide the inside and make basis for future research of the bistatic radar clutter.
Marek Pola, Pavel Bezoušek
doaj  

Radar Waveform Design Method Based on Cascade Optimization Processing under Missing Clutter Prior Data

open access: yesLeida xuebao, 2023
Cognitive radar waveform design often relies on accurate clutter prior information. When prior information data is missing, the constructed clutter model will be severely mismatched, affecting the radar’s ability to suppress clutter.
Yingkui ZHANG   +3 more
doaj   +1 more source

Dancing to multiple tunes: Establishing legitimacy with first‐time and repeat backers in crowdfunding campaigns

open access: yesStrategic Entrepreneurship Journal, EarlyView.
Abstract Research Summary Using 14,108 Kickstarter crowdfunding campaigns, we examine three strategies to gather support from first‐time versus repeat backers: narrative distinctiveness aligning with backers' expectations of novelty, endorsement from Kickstarter staff, and campaign leadership's reciprocity of funding other campaigns.
Stephanie Hepp   +2 more
wiley   +1 more source

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