Langmuir probe experiments on Korean satellites

We report in this paper the test results of the Langmuir Probes (LPs) that have been used on several Korean low earth orbit (LEO) satellites since 1999. The probes were designed to measure the electrons in the density range of ∼104 to ∼106/cm3 and temperatures less than ∼104 K, which are the typical...

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Bibliographic Details
Published in:Current applied physics 2013, 13(5), , pp.846-849
Main Authors: Lee, J.C., Min, K.W., Ham, J.W., Kim, H.J., Lee, J.-J., Hong, S.K.
Format: Article
Language:English
Subjects:
Contamination
Density
Earth ionosphere
Electric potential
Electron temperature
electrons
Error analysis
Errors
Langmuir probe
Satellites
Space experiment
temperature
Voltage
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Summary:We report in this paper the test results of the Langmuir Probes (LPs) that have been used on several Korean low earth orbit (LEO) satellites since 1999. The probes were designed to measure the electrons in the density range of ∼104 to ∼106/cm3 and temperatures less than ∼104 K, which are the typical characteristics of the upper ionosphere. Careful considerations were given to the probe design to reduce many error sources. For example, a 10 Hz fast voltage sweep was applied to the probe to minimize measurement errors caused by probe contaminations. An electron temperature probe was installed in addition to the LP on the KOMPSAT-1, and the electron temperatures measured simultaneously and independently by the two instruments were compared. The results showed good agreement, which confirms the validity of the LP data obtained from these Korean satellites.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2012.12.011