  We study the impact of ionospheric disturbances on the Earth's environment
caused by the solar events that occurred from 20 April to 31 May 2010, using
observations from the Mexican Array Radio Telescope (MEXART). During this
period of time, several astronomical sources presented fluctuations in their
radio signals. Wavelet analysis, together with complementary information such
as the vertical total electron content (vTEC) and the Dst index, were used to
identify and understand when the interplanetary scintillation (IPS) could be
contaminated by ionospheric disturbances (IOND). We find that radio signal
perturbations were sometimes associated with IOND and/or IPS fluctuations;
however, in some cases, it was not possible to clearly identify their origin.
Our Fourier and wavelet analyses showed that these fluctuations had frequencies
in the range $\approx$ 0.01 Hz -- $\approx$ 1.0 Hz (periodicities of 100 s to 1
s).
