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- Title
Ultra-low-frequency radio astronomy observations from a Seleno-centric orbit: First results of the Longjiang-2 experiment.
- Authors
Yan, Jingye; Wu, Ji; Gurvits, Leonid I.; Wu, Lin; Deng, Li; Zhao, Fei; Zhou, Li; Lan, Ailan; Fan, Wenjie; Yi, Min; Yang, Yang; Yang, Zhen; Wei, Mingchuan; Guo, Jinsheng; Qiu, Shi; Wu, Fan; Hu, Chaoran; Chen, Xuelei; Rothkaehl, Hanna; Morawski, Marek
- Abstract
This paper introduces the first results of observations with the Ultra-Long-Wavelength (ULW) —- Low Frequency Interferometer and Spectrometer (LFIS) on board the selenocentric satellite Longjiang-2. We present a brief description of the satellite and focus on the LFIS payload. The in-orbit commissioning confirmed a reliable operational status of the instrumentation. We also present results of a transition observation, which offers unique measurements on several novel aspects. We estimate the RFI suppression required for such a radio astronomy instrumentation at the Moon-distances from Earth as order of − 80 dB. We analyse a method of separating Earth- and satellite-originated radio frequency interference (RFI). It is found that the RFI level at frequencies lower than a few MHz is smaller than the receiver noise floor.
- Subjects
ASTRONOMICAL observations; RADIO astronomy; RADIO interference; ORBITS (Astronomy); LUNAR orbit
- Publication
Experimental Astronomy, 2023, Vol 56, Issue 1, p333
- ISSN
0922-6435
- Publication type
Article
- DOI
10.1007/s10686-022-09887-0