This book highlights the capabilities and limitations of radar and air
navigation. It discusses issues related to the physical principles of an
electromagnetic field, the structure of radar information, and ways to
transmit it. Attention is paid to the classification of radio waves used
for transmitting radar information, as well as to the physical
description of their propagation media. The third part of the book
addresses issues related to the current state of navigation systems used
in civil aviation and the prospects for their development in the future,
as well as the history of satellite radio navigation systems. The book
may be useful for schoolchildren, interested in the problems of radar
and air navigation.