Enhancing the ISIS‐I Topside Digital Ionogram Database

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F18%3A00496768" target="_blank" >RIV/68378289:_____/18:00496768 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1029/2018RS006659" target="_blank" >http://dx.doi.org/10.1029/2018RS006659</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2018RS006659" target="_blank" >10.1029/2018RS006659</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancing the ISIS‐I Topside Digital Ionogram Database

Popis výsledku v původním jazyce

Selected original analog telemetry tapes from three of the topside-sounder satellites of the International Satellites for Ionospheric Studies (ISIS) program, namely Alouette 2, ISIS I, and ISIS II, were used in an earlier project to produce more than 1/2 million digital topside ionograms: the resulting digital topside ionograms from ISIS II were used to produce more than 86,000 globally distributed vertical topside ionospheric electron density profiles N-e(h) that cover a time span of more than a solar cycle. These N-e(h) were produced using the Topside Ionogram Scaler with True height algorithm auto-scaling software. Before attempting to automatically process Alouette-2 or ISIS-I ionograms, a data-enhancement project was initiated so as to increase the number of ionograms suitable for manual scaling and to increase the auto-processing success rate. These enhancements were mainly to correct problems that often occurred during the analog-to-digital conversion of the original telemetry tapes. Here we illustrate the improvements made to the ISIS-I digital topside ionograms and compare N-e values at the satellite altitude and N-e(h) profiles, based on the manual scaling of selected ionograms, to both the auto-scaled values and the predictions of the International Reference Ionosphere 2016 model. The results indicate the need to improve the available auto-processing software for the new ISIS-I digital ionograms and that International Reference Ionosphere 2016 predicts midlatitude winter topside N-e values that are too high in the late morning and at noon but too low in the early morning. n

Název v anglickém jazyce

Enhancing the ISIS‐I Topside Digital Ionogram Database

Popis výsledku anglicky

Selected original analog telemetry tapes from three of the topside-sounder satellites of the International Satellites for Ionospheric Studies (ISIS) program, namely Alouette 2, ISIS I, and ISIS II, were used in an earlier project to produce more than 1/2 million digital topside ionograms: the resulting digital topside ionograms from ISIS II were used to produce more than 86,000 globally distributed vertical topside ionospheric electron density profiles N-e(h) that cover a time span of more than a solar cycle. These N-e(h) were produced using the Topside Ionogram Scaler with True height algorithm auto-scaling software. Before attempting to automatically process Alouette-2 or ISIS-I ionograms, a data-enhancement project was initiated so as to increase the number of ionograms suitable for manual scaling and to increase the auto-processing success rate. These enhancements were mainly to correct problems that often occurred during the analog-to-digital conversion of the original telemetry tapes. Here we illustrate the improvements made to the ISIS-I digital topside ionograms and compare N-e values at the satellite altitude and N-e(h) profiles, based on the manual scaling of selected ionograms, to both the auto-scaled values and the predictions of the International Reference Ionosphere 2016 model. The results indicate the need to improve the available auto-processing software for the new ISIS-I digital ionograms and that International Reference Ionosphere 2016 predicts midlatitude winter topside N-e values that are too high in the late morning and at noon but too low in the early morning. n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/LTAUSA17100" target="_blank" >LTAUSA17100: Modely parametrů termálního plazmatu v okolí Země a jejich specifikace v reálném čase na základě družicových měření</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Radio Science

ISSN

0048-6604

e-ISSN

—

Svazek periodika

53

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

1492-1505

Kód UT WoS článku

000455261600004

EID výsledku v databázi Scopus

2-s2.0-85058382054