P.A. Sozinov1, G.I. Andreev2, V.A. Tikhomirov3, M.E. Zamarin4

1 “Almaz-Antey” Corp. (Moscow, Russia)

2,4 JSC “Central radio-research institute named after academician A.I. Berg” (Moscow, Russia)

3 JSC R&D Production Facility “Development of Innovative Technologies” (Tver, Russia)

Radar imaging viewing systems take detected object not as a single element but as a set of scattering elements. Hence, one has to evaluate objects local characteristics that affect radar recognizability.

Nowadays there is a contradiction between a necessarily prompt evaluation, after a number of measurements involving radar measuring complex, of those objects local characteristics that affect radar recognizability to reveal elements of their construction critical to radar recognizability reduction, and low efficiency and limited capabilities to solve the problem using existing approaches.

In order to reduce objects radar recognizability, an investigation was carried out whose purpose consists in suggesting an approach allowing to minimize radar cross section of critical scattering elements revealed after procession of experimental data obtained using radar measuring complex.

As a result, an approach to evaluation of objects local characteristics affecting radar recognizability obtained after procession of experimental data from radar measuring complex using synthesized panoramic radar images is elaborated.

The problem consisting in reducing of radar recognizability can be solved by analyzing of panoramic radar images. Analytical treatment of each scattering element as a combination of small synthesizing elements allows to identify each synthesizing element with elements of objects construction and to advise an optimal practical solution to reduce radar recognizability. To reduce radar recognizability, one has to determine a degree of radar cross section reduction for each synthesizing element that form a resolution cell. This can be carried out by solving the optimization problem consisting in achieving of a required degree for scattering elements radar cross section reduction minimizing resource expenditure and taking into account change of viewpoint. Scattering elements radar cross section must be equal to radar cross section of underlying surface resolution cell. Efficient radar recognizability reduction is achieved when object does not stand out against a background and resource expenditure are minimal. The optimization problem mentioned above can be solved utilizing Lagrange method consisting in conditional extremum hunting.

The suggested approach may be useful for an experimental stand with appropriate hardware and software to evaluate objects radar recognizability.

Sozinov P.A., Andreev G.I., Tikhomirov V.A., Zamarin M.E. A conceptual approach to evaluation and reduction of radar recognizability objects. Radiotekhnika. 2022. V. 86. № 5. P. 5−15. DOI: https://doi.org/10.18127/j00338486-202205-01 (In Russian)

1. Lifanov Ju.S., Sablin V.N., Fedorov A.N., Shaposhnikov V.I. Napravlenija razvitija sovremennyh radiolokacionnyh sredstv i sistem razvedki nazemnyh celej. Ch. 1. Radiolokacionnye sistemy kosmicheskogo bazirovanija. Zarubezhnaja radiojelektronika. Uspehi sovremennoj radiojelektroniki. 1998. № 5. (In Russian).
2. Lifanov Ju.S., Sablin V.N., Fedorov A.N., Shaposhnikov V.I. Napravlenija razvitija sovremennyh radiolokacionnyh sredstv i sistem razvedki nazemnyh celej. Ch. 2. Vozdushnye sredstva i sistemy radiolokacionnoj razvedki. Zarubezhnaja radiojelektronika. Uspehi sovremennoj radiojelektroniki. 1998. № 6. (In Russian).
3. Kuprijanov A.I., Shustov L.N. Radiojelektronnaja bor'ba. Osnovy teorii. M.: Vuzovskaja kniga. 2011. 800 s. (In Russian).
4. Nesterov S.M., Skorodumov I.A., Kovalev S.V., Skokov P.N., Olejnik V.M. Radiolokacionnye harakteristiki ob’ektov. Metody issledovanija. Pod red. S.M. Nesterova. M.: Radiotehnika. 2015. 340 s. (In Russian).
5. Nesterov S.M., Kovalev S.V. Poluchit' radiolokacionnoe izobrazhenie. Vozdushno-kosmicheskaja oborona. 2012. № 1.  (In Russian).
6. Smirnov A.P. Utochnenie trebovanij k pogreshnosti izmerenij jeffektivnoj ploshhadi rassejanija ob’ektov s uchetom osobennostej raboty sredstv obnaruzhenija. Izmeritel'naja tehnika. 2003. № 12. S. 45-47. (In Russian).
7. Neronskij L.B., Mihajlov V.F., Bragin I.V. Radiolokatory s sintezirovannoj aperturoj antenny: Ucheb. posobie (jelektronnaja versija. SPb. 1999. 174 s. (In Russian).
8. Gorkin Ju.S., Ikonopiscev A.I. Mnogoparametricheskaja model' raspredelenija intensivnosti obluchajushhego polja v rabochem ob’eme RLS pri zondirovanii ob’ekta pod malymi uglami mesta. Trudy XIII Mezhdunar. nauch.-tehnich. konf. «Radiolokacija, navigacija, svjaz'». Rossija. Voronezh. 2007. (In Russian).
9. Gorkin Ju.S., Mjazin V.N. Principy postroenija sistemy kalibrovki nazemnyh izmeritel'nyh RLS s povyshennymi jenergopotencialom i chuvstvitel'nost'ju pod malymi uglami mesta. Antenny. 2004. № 5. (In Russian).
10. Varganov M.E., Zinov'ev Ju.S., Astanin L.Ju. Radiolokacionnye harakteristiki letatel'nyh apparatov. Pod red. L.T. Tuchkova. M.: Radio i svjaz'. 1985. 231 s. (In Russian).
11. Vychislitel'nyj jeksperiment – metodologicheskaja osnova prinjatija upravlencheskih reshenij. Monografija. Pod red. P.A. Sozinova.
    M.: Radiotehnika. 2021. 352 s. (In Russian).