@article{b2444f6603f9438e8bc34b4bf7438954,
title = "Calibration of the JUICE RWI Antennas by Numerical Simulation",
abstract = "The reception properties of the Radio Wave Instrument (RWI) onboard JUICE (Jupiter Icy Moons Explorer) have been determined using numerical methods applied to a mesh-grid model of the spacecraft. The RWI is part of the RPWI (Radio and Plasma Wave Investigation) and consists of three perpendicular dipoles mounted on a long boom. We determined their effective lengths vectors and capacitive impedances of 8–9 pF. We also investigated the change in effective antenna angles as a function of solar panel rotation and calculated the directivity of the antennas at higher frequencies up to the maximum frequency of 45 MHz of the receiver. We found that the RWI dipoles can be used for direction-finding with an accuracy of (Formula presented.) up to a frequency of 1.5 MHz. Additionally we calculated the influence of strong pulses from the JUICE active radar on RPWI and found that they should do no harm to its sensors and receivers.",
keywords = "JUICE, Radio Wave Instrument, antenna calibration",
author = "G. Fischer and M. Panchenko and W. Macher and Y. Kasaba and H. Misawa and M. Tokarz and L. Wisniewski and B. Cecconi and J. Bergman and Wahlund, {J. E.}",
note = "Funding Information: G. Fischer and M. Panchenko acknowledge support from the Austrian Space Applications Program (ASAP 13) of the Austrian Research Promotion Agency (FFG) under project 859728 named “Experimental and numerical models for the calibration of the JUICE RWI antennas.” They also acknowledge support from ESA Prodex for the project JUICE‐RWI‐ORIENT (no. 4000118632), which was performed to find the optimum orientation of the JUICE RWI antenna triad on the magnetometer boom (see Section 3.3 of this paper). The development of RWI at Astronika was financed by ESA Prodex under project no. 4000119065/16/NL/JK. Astronika's engineers who greatly contributed to development of the RWI antennas are: Jerzy Grygorczuk, Piotr Palma, Stanis{\l}aw Jarzynka, Tomasz Kuci{\'n}ski, Maciej Ossowski, Mateusz Duda, Karol Jarocki, Henryk Gut, Micha{\l} Bogo{\'n}ski, Dominik Nolbert, Ewelina Ryszawa, Pawe{\l} Miara, Kamil Bochra, Mateusz Grzyb, Przemys{\l}aw Nowotarski, Maciej Ataman, and S{\l}awomir Szczyglak. The Swedish National Space Agency (SNSA) is the lead agency for, and supports, the JUICE/RPWI instrument implementation. The Swedish Institute of Space Physics (IRF) in Uppsala supports and manages the JUICE/RPWI instrument implementation as the Principal Investigator (PI) institute. The JAXA, the Polish PRODEX committee, and CNES also supported the RWI subsystem implementation. Funding Information: G. Fischer and M. Panchenko acknowledge support from the Austrian Space Applications Program (ASAP 13) of the Austrian Research Promotion Agency (FFG) under project 859728 named “Experimental and numerical models for the calibration of the JUICE RWI antennas.” They also acknowledge support from ESA Prodex for the project JUICE-RWI-ORIENT (no. 4000118632), which was performed to find the optimum orientation of the JUICE RWI antenna triad on the magnetometer boom (see Section 3.3 of this paper). The development of RWI at Astronika was financed by ESA Prodex under project no. 4000119065/16/NL/JK. Astronika's engineers who greatly contributed to development of the RWI antennas are: Jerzy Grygorczuk, Piotr Palma, Stanis{\l}aw Jarzynka, Tomasz Kuci{\'n}ski, Maciej Ossowski, Mateusz Duda, Karol Jarocki, Henryk Gut, Micha{\l} Bogo{\'n}ski, Dominik Nolbert, Ewelina Ryszawa, Pawe{\l} Miara, Kamil Bochra, Mateusz Grzyb, Przemys{\l}aw Nowotarski, Maciej Ataman, and S{\l}awomir Szczyglak. The Swedish National Space Agency (SNSA) is the lead agency for, and supports, the JUICE/RPWI instrument implementation. The Swedish Institute of Space Physics (IRF) in Uppsala supports and manages the JUICE/RPWI instrument implementation as the Principal Investigator (PI) institute. The JAXA, the Polish PRODEX committee, and CNES also supported the RWI subsystem implementation. Publisher Copyright: {\textcopyright} 2021. American Geophysical Union. All Rights Reserved.",
year = "2021",
month = nov,
doi = "10.1029/2021RS007309",
language = "English",
volume = "56",
journal = "Radio Science",
issn = "0048-6604",
publisher = "American Geophysical Union",
number = "11",
}