  The Low-Frequency Radio Spectrometer (LFRS) is a scientific payload onboard
the Chang'e-4 lunar lander launched in December 2018. The LFRS provides in-situ
measurements of the low-frequency radio phenomena on the far-side of the Moon
for the first time in human history. To evaluate the performance of the LFRS, a
series of ground experiments are conducted using a prototype model of the LFRS.
It is not easy to perform the experiments because the EMI \footnote{
Abbreviation: EMI, Electro Magnetic Interference} from the Chang'e-4 lunar
lander itself and the environment is very intense. The results after EMI
mitigation show that the sensitivity of the LFRS may be 1e-18Wm^2Hz^-1.
