论文标题
超低频射电天文学观测来自硒中心轨道：Longjiang-2实验的第一个结果
Ultra-Low-Frequency Radio Astronomy Observations from a Selenocentric Orbit: first results of the Longjiang-2 experiment
论文作者
论文摘要
本文介绍了超长波长（ULW）的第一个观测结果 - 在硒中心卫星Longjiang-2上，低频干涉仪和光谱仪（LFIS）。我们简要介绍了卫星，并专注于LFIS有效载荷。轨内委托确认了仪器的可靠操作状态。我们还提出了过渡观察结果的结果，该观察结果对几个新方面提供了独特的测量。我们估计在月球距离地球距离处的射电天文学仪器所需的RFI抑制作用为80 dB。我们分析了一种分离地球和卫星注射的射频干扰（RFI）的方法。发现低于几个MHz的频率的RFI水平小于接收器噪声底。
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 to be of the 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.
