The theoretical electrical noise induced by the solar wind for the Solar Orbiter mission
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
This master thesis report describes the expected noise that the electric antennas of theSolar Orbiter satellite will observe in the solar wind. The previous models only describethe high frequency range and accounts only for the quasi thermal noise (QTN) and shotnoise. We present a new model that extends to low frequencies and which accounts alsofor the antenna resistive coupling to plasma, thermal noise and the preamplier noise.The results of the model show that in the low frequency range a biased antenna has lowernoise than unbiased antenna and is therefore to be recommend. In the high frequencyrange the dierence is not that big between a biased and unbiased antennas. For themeasurement of QTN in the high frequency range it is recommend to use an unbiasedantenna. A biased antenna has a noise magnitude that is 102 times smaller then anunbiased antenna in the low frequency range and close to Sun. A biased antenna is alsoresistively coupled to the plasma up to higher frequency.
Place, publisher, year, edition, pages
2013. , 81 p.
IdentifiersURN: urn:nbn:se:ltu:diva-55511Local ID: c5ee5d92-d50d-4d2c-8eed-b64199456b9aOAI: oai:DiVA.org:ltu-55511DiVA: diva2:1028895
Subject / course
Student thesis, at least 30 credits
Space Engineering, master's level
Wisten, ÅkeVaivads, Andris
Validerat; 20130902 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved