Time Scales Comparisons Using Simultaneous Measurements in Three Frequency Channels

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Time Scales Comparisons Using Simultaneous Measurements in Three Frequency Channels

Popis výsledku v původním jazyce

This paper describes the design of optimal methods for processing the results of measurements in several frequency channels based on the Best Linear Unbiased Estimation (BLUE). The optimal estimate was derived for a number of elementary models (no ionospheric delay, first-order ionospheric delay, first- and second-order ionospheric delay), and the contribution of using measurements in three frequency channels was evaluated compared to procedures used up to now. We show that the optimal estimates are insome cases equal to already used linear combination of measurements (e.g. L3P) and thus these classical procedures can be considered optimal. We confirm the fact that the ionospheric free solution is always redeemed with significant increase of impact ofrandom errors. The impact is increased by factor of three concerning the measurements in two frequency channels compared to measurement in a single frequency channel. We show that improvement of 15 % can be achieved if measurements in th

Název v anglickém jazyce

Time Scales Comparisons Using Simultaneous Measurements in Three Frequency Channels

Popis výsledku anglicky

This paper describes the design of optimal methods for processing the results of measurements in several frequency channels based on the Best Linear Unbiased Estimation (BLUE). The optimal estimate was derived for a number of elementary models (no ionospheric delay, first-order ionospheric delay, first- and second-order ionospheric delay), and the contribution of using measurements in three frequency channels was evaluated compared to procedures used up to now. We show that the optimal estimates are insome cases equal to already used linear combination of measurements (e.g. L3P) and thus these classical procedures can be considered optimal. We confirm the fact that the ionospheric free solution is always redeemed with significant increase of impact ofrandom errors. The impact is increased by factor of three concerning the measurements in two frequency channels compared to measurement in a single frequency channel. We show that improvement of 15 % can be achieved if measurements in th

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 44th Annual Precise Time and Time Interval (PTTI) Systems and Applications Meeting

ISBN

9781627488716

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

301-310

Název nakladatele

ION

Místo vydání

Manassan

Místo konání akce

Reston

Datum konání akce

26. 11. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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