Results 1 to 10 of about 62,923 (272)

DVB-RCS return link radio resource management for broadband satellite systems using fade mitigation techniques at ka band [PDF]

open access: yes, 2008
Current Broadband Satellite systems supporting DVB-RCS at Ku band have static physical layer in order not to complicate their implementation. However at Ka band frequencies and above an adaptive physical layer wherein the physical layer parameters are ...
Laurent Castanet   +7 more
core   +1 more source

Calculation method of the radar cross section of the complex shape object located on the surface with an arbitrary reflection coefficient

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2021
Relevance. Currently, an important problem is the electromagnetic wave scattering modeling on the complex shape objects located on some underlying surface (this may be military equipment on bitumen/ grass, surface objects directly on the water).
V. Khrychov, M. Legenkiy
doaj   +1 more source

Early Egg Production in Genetically Blind (rc/rc) Chickens in Comparison with Sighted (Rc/rc) Controls

open access: yesPoultry Science, 1985
The impact of blindness on egg production was investigated by utilizing genetically blind chickens in a factorial experiment involving two genotypes (blind vs. sighted), two densities (1000 cm2 per bird vs. 2000 cm2 per bird), two flock sizes (1 male, 4 female female vs. 4 male male, 16 female female), and two replications (floor pens). Traits measured
A, Ali, K M, Cheng
openaire   +2 more sources

Accuracy of radar-based precipitation measurement: An analysis of the influence of multiple scattering and non-spherical particle shape

open access: yesEarth and Planetary Physics, 2018
Two assumptions are typically made when radar echo signals from precipitation are analyzed to determine the micro-physical parameters of raindrops: (1) the raindrops are assumed to be spherical; (2) multiple scattering effects are ignored.
Hao Chen   +3 more
doaj   +1 more source

Insect detection and density estimation based on a Ku-band scanning entomological radar

open access: yesThe Journal of Engineering, 2019
Entomological radars need to address the problem of insect density estimation. Here, a Ku-band experimental entomological radar with two-dimensional scanning mode is used to collect insect echo data.
Jiong Cai   +4 more
doaj   +1 more source

Influence of Cockpit and Inlet on Electromagnetic Scatterings for a Flying-wing Configuration

open access: yesHangkong gongcheng jinzhan, 2019
The cockpit and inlet play an important role for aircraft stealth performance.In order to analyze the scattering characteristics of cockpit and inlet, four kinds electromagnetic models with different components are established.The influence of radar ...
Liu Zhanhe   +4 more
doaj   +1 more source

Optimized Stealth Design and Remolding of Target Unmanned Aerial Vehicle

open access: yesXibei Gongye Daxue Xuebao, 2020
In order to satisfy the imperious requirements of low-detectable target aircraft in the current test and evaluation of airborne radar and to remedy the numerous defects of magnetic microwave absorbing coating in the practical application, a new type of ...

doaj   +1 more source

Differential RCS of Modulated Tag

open access: yes, 2021
International audienceDifferential RCS characterizes the aptitude of a tag to modulate the backscattered power. This parameter is classically estimated based on the variation of the IQ channels in the time domain.
Barbot, Nicolas   +2 more
core   +1 more source

Noncontact Detection of Respiration Rate Based on Forward Scatter Radar

open access: yesSensors, 2019
Bioradar-based noncontact breathing detection technology has been widely studied due to its superior detection performance. In this paper, a breath detection mechanism based on the change in radar cross section (RCS) is proposed by using a forward ...
Fan Yang   +5 more
doaj   +1 more source

RCS-yritysviestinnän menestystekijät Suomessa [PDF]

open access: yes, 2023
Mobiiliviestintämarkkina on ollut murroksessa, kun matkapuhelinoperaattoreiden perinteisesti tarjoamat tekstiviestipalvelut ovat osittain korvautuneet Over-The-Top (OTT)-viestintäpalveluilla, kuten WhatsApp. Kuluttajien välinen viestintä on lähes tä
Lindqvist, Lasse
core  

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