RADAR LOCATION CONTRAST IN THE REFLECTION OF ELECTROMAGNETIC WAVE FROM TWO OBJECTS
https://doi.org/10.26467/2079-0619-2018-21-2-153-161
Abstract
The paper considers the problem of finding the power flux density of signals reflected from two objects with different symmetric scattering matrices when they are irradiated with a completely polarized wave. The authors consider the case when the eigenvalues of the matrix are different given the form of the unitary diagonalization of the matrix for this case. The relation defining the diagonal elements of the factor is given. A comparison is made between the power flux density of the signals reflected from two objects with different scattering matrices when they are irradiated with a completely polarized wave. The power flux density of the electromagnetic wave reflected by this object is determined mathematically. Based on the definition of the scattering matrix, a transition to incident waves is performed. A parameter characterizing the degree of polarization anisotropy of the fluctuating object is given. The ratio for radar contrast is given. It is concluded that if the vector of the incident electromagnetic wave differs only in the scalar multiplier from the eigenvector of the matrix, the radar contrast will reach its maximum value. When the vector of the incident wave is proportional to the eigenvector, the value of the radar contrast reaches its minimum value. A problem is considered when the scattering matrices of two objects are simultaneously reduced to a diagonal form by means of a congruence transformation. Conditions are determined under which the Graves matrix of two scattering objects is reduced to diagonal form by means of a congruent transformation. A necessary and sufficient condition for the existence of a polarization basis is obtained in which the scattering matrices of two objects will simultaneously have a diagonal form.
About the Authors
A. I. Kozlov
Moscow State Technical University of Civil Aviation, Moscow
Russian Federation
Doctor of Physical and Mathematical Sciences, Professor, Professor of the Technical Maintenance of Radio Electronic Equipment for Air Transport Chair
Russian Federation
Doctor of Physical and Mathematical Sciences, Professor, Professor of the Technical Maintenance of Radio Electronic Equipment for Air Transport Chair
V. Yu. Maslov
Moscow Technological University, Moscow,
Russian Federation
Doctor of Technical Sciences, Professor
Russian Federation
Doctor of Technical Sciences, Professor
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Review
For citations:
Kozlov A.I., Maslov V.Yu. RADAR LOCATION CONTRAST IN THE REFLECTION OF ELECTROMAGNETIC WAVE FROM TWO OBJECTS. Civil Aviation High Technologies. 2018;21(2):153-161. (In Russ.) https://doi.org/10.26467/2079-0619-2018-21-2-153-161
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