Satellite temperature measurement in LEO and improvement method of temperature sensors calibration based on measured data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00332354" target="_blank" >RIV/68407700:21230/19:00332354 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1002/asna.201913671" target="_blank" >https://doi.org/10.1002/asna.201913671</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/asna.201913671" target="_blank" >10.1002/asna.201913671</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Satellite temperature measurement in LEO and improvement method of temperature sensors calibration based on measured data

Popis výsledku v původním jazyce

This article describes the temperature measurement and its calibration on board of the nanosatellite CubeSat class VZLUSAT-1. There are several thermometers, installed with an analogue and a digital output, which are necessary for the accurate measurements calibrations under a vacuum condition or for applying post-processing corrections. This document describes the way of calibration in a thermal vacuum chamber and its improvement in orbit. In addition, the paper will discusses the use of a RTD platinum sensors Pt1000 and a digital sensors HYT271 as the reference. A correction variable based on HYT271 compensates a nonlinearity of Pt1000 as well as minimise the influence of change in a measuring current due to temperature changes. The current correction variable is a function of temperature and nanosatellite’s position in the orbit. The measured temperatures are below -70 °C in the Earth’s shadow and greater than +80 °C after irradiation by the Sun. Orbital temperature calibration is performed in two steps. The raw temperatures data obtained during the orbital measurement are being used for further improvement. The measurement cycle consists of the electronics calibration, temperature measurement and temperature calibration. After applying the temperature correction process, the final accuracy is better than, 0.15 °C

Název v anglickém jazyce

Satellite temperature measurement in LEO and improvement method of temperature sensors calibration based on measured data

Popis výsledku anglicky

This article describes the temperature measurement and its calibration on board of the nanosatellite CubeSat class VZLUSAT-1. There are several thermometers, installed with an analogue and a digital output, which are necessary for the accurate measurements calibrations under a vacuum condition or for applying post-processing corrections. This document describes the way of calibration in a thermal vacuum chamber and its improvement in orbit. In addition, the paper will discusses the use of a RTD platinum sensors Pt1000 and a digital sensors HYT271 as the reference. A correction variable based on HYT271 compensates a nonlinearity of Pt1000 as well as minimise the influence of change in a measuring current due to temperature changes. The current correction variable is a function of temperature and nanosatellite’s position in the orbit. The measured temperatures are below -70 °C in the Earth’s shadow and greater than +80 °C after irradiation by the Sun. Orbital temperature calibration is performed in two steps. The raw temperatures data obtained during the orbital measurement are being used for further improvement. The measurement cycle consists of the electronics calibration, temperature measurement and temperature calibration. After applying the temperature correction process, the final accuracy is better than, 0.15 °C

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Astronomische Nachrichten

ISSN

0004-6337

e-ISSN

1521-3994

Svazek periodika

340

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

652-657

Kód UT WoS článku

000491150100001

EID výsledku v databázi Scopus

2-s2.0-85074018494