Leans System Sonar
A0132Anatol V. Kuznetsov Far-Eastern State Technical University
This report deals with the synthesis problem of leans antenna sonar
taking into account definite directivity pattern.
The synthesis of homogeneous leans profile performing given
directivity pattern with required accuracy. As you know from the
theory of antenna synthesis, the definite phase amplitude excitation
distribution is necessary for forming a given aperture directivity
pattern. The excitation phase and required directivity patterns is
given for ear zone. The radio and zone number is defined by
permissible fault in directivity pattern forming.
Phase amplitude distribution of antenna aperture includes two point:At
first the required depth of phase distribution in calculated. Then
calculation of a number of depth layers according to a multiplied
wavelength necessary for given amplitude attenuation is calculated.
Every depth zone increase being equal to multiplied wavelength, the
aperture has the required phase distribution.
Wane phases radiated by two adjacent zone are to differ in an odd
integral number for producing opposite aperture phase sections.
The results of leans antenna sonar calculations and their experimental
investigations are represented in this report.