TY - JOUR
T1 - Data processing in Software-type Wave–Particle Interaction Analyzer onboard the Arase satellite
AU - Hikishima, Mitsuru
AU - Kojima, Hirotsugu
AU - Katoh, Yuto
AU - Kasahara, Yoshiya
AU - Kasahara, Satoshi
AU - Mitani, Takefumi
AU - Higashio, Nana
AU - Matsuoka, Ayako
AU - Miyoshi, Yoshizumi
AU - Asamura, Kazushi
AU - Takashima, Takeshi
AU - Yokota, Shoichiro
AU - Kitahara, Masahiro
AU - Matsuda, Shoya
N1 - Funding Information:
The authors express their sincere gratitude for the significant contributions made by all members of the ERG project. This study is supported by Grants-in-Aid for Scientific Research (17H06140, 16H06286, 15H05815, 15H05747, and 15K17771) of the Japan Society for the Promotion of Science. This work was carried out as a joint research program with the Institute for Space-Earth Environmental Research (ISEE), Nagoya University. The authors wish to thank the late Professor Takayuki Ono for his valuable discussions and continuous encouragement during this study.
Publisher Copyright:
© 2018, The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - The software-type wave–particle interaction analyzer (S-WPIA) is an instrument package onboard the Arase satellite, which studies the magnetosphere. The S-WPIA represents a new method for directly observing wave–particle interactions onboard a spacecraft in a space plasma environment. The main objective of the S-WPIA is to quantitatively detect wave–particle interactions associated with whistler-mode chorus emissions and electrons over a wide energy range (from several keV to several MeV). The quantity of energy exchanges between waves and particles can be represented as the inner product of the wave electric-field vector and the particle velocity vector. The S-WPIA requires accurate measurement of the phase difference between wave and particle gyration. The leading edge of the S-WPIA system allows us to collect comprehensive information, including the detection time, energy, and incoming direction of individual particles and instantaneous-wave electric and magnetic fields, at a high sampling rate. All the collected particle and waveform data are stored in the onboard large-volume data storage. The S-WPIA executes calculations asynchronously using the collected electric and magnetic wave data, data acquired from multiple particle instruments, and ambient magnetic-field data. The S-WPIA has the role of handling large amounts of raw data that are dedicated to calculations of the S-WPIA. Then, the results are transferred to the ground station. This paper describes the design of the S-WPIA and its calculations in detail, as implemented onboard Arase.[Figure not available: see fulltext.].
AB - The software-type wave–particle interaction analyzer (S-WPIA) is an instrument package onboard the Arase satellite, which studies the magnetosphere. The S-WPIA represents a new method for directly observing wave–particle interactions onboard a spacecraft in a space plasma environment. The main objective of the S-WPIA is to quantitatively detect wave–particle interactions associated with whistler-mode chorus emissions and electrons over a wide energy range (from several keV to several MeV). The quantity of energy exchanges between waves and particles can be represented as the inner product of the wave electric-field vector and the particle velocity vector. The S-WPIA requires accurate measurement of the phase difference between wave and particle gyration. The leading edge of the S-WPIA system allows us to collect comprehensive information, including the detection time, energy, and incoming direction of individual particles and instantaneous-wave electric and magnetic fields, at a high sampling rate. All the collected particle and waveform data are stored in the onboard large-volume data storage. The S-WPIA executes calculations asynchronously using the collected electric and magnetic wave data, data acquired from multiple particle instruments, and ambient magnetic-field data. The S-WPIA has the role of handling large amounts of raw data that are dedicated to calculations of the S-WPIA. Then, the results are transferred to the ground station. This paper describes the design of the S-WPIA and its calculations in detail, as implemented onboard Arase.[Figure not available: see fulltext.].
KW - Inner magnetosphere
KW - Onboard processing
KW - Wave–particle interaction
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U2 - 10.1186/s40623-018-0856-y
DO - 10.1186/s40623-018-0856-y
M3 - Article
AN - SCOPUS:85046550739
VL - 70
JO - Earth, Planets and Space
JF - Earth, Planets and Space
SN - 1343-8832
IS - 1
M1 - 80
ER -