Yu. M. Urlichich, S. A. Ezhov, A. V. Kruglov, V. M. Vatutin, E. P. Molotov, S.G. Buev,
A. O. Ostapenko, A. I. Efimov, A. G. Paveliev
The analysis of capabilities for investigating the Solar System objects by remote methods based on using the radio waves passing the environment under investigation (method of radio illumination) or reflected from planet surface (method of be-static or mono-static radio location) has been carried out in the paper. It was shown, that the radio link potential, providing the study of an object, depends on position of radio wave source (transmitting system) and receive and recording system (receiver) relative to the object under investigation.
At that, the quality of radio physical experiments depends on the relationship between the effects being created by investigation objects and instrumental errors, which are mainly determined by technical characteristics of used radio systems and, first of all, by the energy potential of radio links chosen for carrying out the investigations.
It was proposed that the form of remote investigation on the basis of radiation of sounding signals with high frequency stability and high level of power in several radio ranges from the ground station and data processing on the board of a spacecraft with translation of results through high speed TM channels to the ground station is the most promising scheme.
The potential of such radio link can overbalance by 10 – 15 dB the analog characteristics of other schemes of investigation.
The increase of resolution in connection with increasing the radio sensing potential provides the possibility to study the more discharged (in comparison with the night planet ionospheres) plasma sheaths of celestial bodies (comets and asteroids) and thin structure of atmospheres, planet ionospheres, interplanetary and circumsolar plasma.
When using a bi-static radar and placing the transmitting feed system on the ground station we get the possibility to receive high-quality radio images of planet surface and other objects of the Solar system.