  The purpose of this work is to demonstrate the effectiveness of ground-based
support for space missions, primarily PSP, using large Ukrainian decameter
radio telescopes. Another goal of the work is to carry out cross calibration of
the radiometers onboard spacecraft using the calibrated data of the
ground-based radio telescopes. One of the most common methods of remote
diagnostics of the solar corona is the study of radio emission, the sources of
which are located in the solar corona at different heliocentric altitudes. The
technique of joint space terrestrial observations consists in the simultaneous
observation of individual events and their analysis in the widest possible
frequency band during the maximum approach of the PSP vehicle to the Sun. At
the same time, observation in the common frequency band is proposed to be used
for calibration of the onboard radio receivers. The methods of planning joint
space terrestrial observations are substantiated. Using the data of the UTR 2,
URAN 2 radio telescopes and the PSP probe, the dynamic and polarization spectra
of the simultaneously observed bursts on June 9, 2020 were obtained. The
identification and comparison of individual bursts was carried out. A common
dynamic spectrum of the bursts in the frequency band 0.5 ... 32 MHz was
obtained. Cross calibration of the HFR receiver of the FIELDS PSP module in the
frequency band 10...18 MHz was made using the calibrated data of terrestrial
radio telescopes. The effectiveness of ground-based support of the PSP mission
by the large Ukrainian radio telescopes is shown. Examples of joint
observations are given, and the method of cross calibration of the FIELD PSP
module receivers is demonstrated. Prospects for further ground based support
for solar space missions are presented
