Study of Refraction Effects for Propagation over Terrain

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25530%2F20%3A39915593" target="_blank" >RIV/00216275:25530/20:39915593 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.intechopen.com/books/electromagnetic-propagation-and-waveguides-in-photonics-and-microwave-engineering/study-of-refraction-effects-for-propagation-over-terrain" target="_blank" >https://www.intechopen.com/books/electromagnetic-propagation-and-waveguides-in-photonics-and-microwave-engineering/study-of-refraction-effects-for-propagation-over-terrain</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5772/intechopen.88543" target="_blank" >10.5772/intechopen.88543</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of Refraction Effects for Propagation over Terrain

Popis výsledku v původním jazyce

This chapter investigates the radio-wave propagation above irregular ground, including the troposphere, using physical optics computation. We briefly describe used simplifications, which substantially reduce numerical simulations. Using the principle of stationary phase, we can approximate the propagation over a terrain (the PO approximation of the vector problem with a 3-D surface) with a 2-D surface. Moreover, we approximate the reflection coefficient for a surface with random deviations considering the surface standard deviation and the local Fresnel reflection coefficient for the smooth ground. We present the novel computations of physical optics for investigations of radar coverage diagrams. We consider both monostatic and bistatic radars, the far-field antenna measuring ranges, and studies of air refraction index. We validate the calculations by both experimental results and the other numerical simulations. The experimental results changed during seasons and according to terrain and troposphere conditions including vegetation, cultivation, snow, and air temperature and pressure.

Název v anglickém jazyce

Study of Refraction Effects for Propagation over Terrain

Popis výsledku anglicky

This chapter investigates the radio-wave propagation above irregular ground, including the troposphere, using physical optics computation. We briefly describe used simplifications, which substantially reduce numerical simulations. Using the principle of stationary phase, we can approximate the propagation over a terrain (the PO approximation of the vector problem with a 3-D surface) with a 2-D surface. Moreover, we approximate the reflection coefficient for a surface with random deviations considering the surface standard deviation and the local Fresnel reflection coefficient for the smooth ground. We present the novel computations of physical optics for investigations of radar coverage diagrams. We consider both monostatic and bistatic radars, the far-field antenna measuring ranges, and studies of air refraction index. We validate the calculations by both experimental results and the other numerical simulations. The experimental results changed during seasons and according to terrain and troposphere conditions including vegetation, cultivation, snow, and air temperature and pressure.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/EF17_049%2F0008394" target="_blank" >EF17_049/0008394: Spolupráce Univerzity Pardubice a aplikační sféry v aplikačně orientovaném výzkumu lokačních, detekčních a simulačních systémů pro dopravní a přepravní procesy (PosiTrans)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Electromagnetic Propagation and Waveguides in Photonics and Microwave Engineering

ISBN

978-1-83968-188-2

Počet stran výsledku

18

Strana od-do

101-118

Počet stran knihy

179

Název nakladatele

IntechOpen Limited

Místo vydání

Londýn

Kód UT WoS kapitoly

—