Analysis of the possibilities of passive radar when operating in the ultrashort wave range

The article proposes an analysis of radio transmitters operating in the ultrashort wave range as a convenient signal source for determining the detection range in a passive bistatic radar. A theoretical analysis of the main specific features of a bistatic passive radar is presented; its energy characteristics are considered along with the impact of various types of noise during instantaneous reception of a direct illumination signal and weak reflections from an object. The bistatic characteristics of the passive technology were evaluated when designing such radar for long-range object detection. Additionally, the dynamic range of the passive radar receiver when exposed to noise and the power of the reflected signal based on the effective scattering area, which makes it possible to create a more effective bistatic passive detection technology, was investigated. Experimental evidence is presented in the form of the mathematical modeling, which includes scanning the spectrum of the ultrashort wave range under various conditions for long-range detection of objects. Several options for influencing the range of different terrain and landscape conditions are considered. The results of the mathematical modeling are compared with the theoretical analysis of the specific features of a passive bistatic radar.

1. Griffiths H.D., Baker C.J. An Introduction to Passive Radar. London: Artech House; 2017. 212 p.

2. Budge М.С., German S.R Basic Radar Analysis. Norwood: Artech House; 2015. 784 p.

3. Grishin Yu.P., Ipatov V.P., Kazarinov Yu.M., Kolomenskii Yu.A., Ul'yanitskii Yu.D. Radiotekhnicheskie sistemy. M.: Vysshaya shkola; 1990. 496 p. (In Russ.).

4. Marcelo A.S. Miacci and Mirabel C. Rezende. Basics on Radar Cross Section Reduction Measurements of Simple and Complex Targets Using Microwave Absorbers. Applied Measurement Systems. 2012:351–376. DOI: 10.5772/37195.

5. Kozlov S.V., Le Van Cuong. Long-time coherent accumulation algorithms for reflected signal with non-zero higher derivatives of the range to radar target in the spectral domain. Doklady BGUIR = Doklady BGUIR. 2021;19:35–44. (In Russ.).

6. Dzhioev A.L., Omelchuk I.S., Tyurin D.A., Fominchenko G.G., Fominchenko G.L. Method of passive single-positioning angle-difference-doppler location, structure and algorithm of functioning of its radar location system. Zhurnal Radioelektroniki = Journal of Radio Electronics 2017;9. Available from: http://jre.cplire.ru/jre/sep17/13/text.pdf (accessed on 16.03.2023). (In Russ.).

7. Fomin A.N., Tyapkin V.N., Dmitriev D.D., Andreev S.N., Ishchuk I.N., Kupryashkin I.F., Grechkoseev A.K. Teoreticheskie i fizicheskie osnovy radiolokatsii i spetsial'nogo monitoringa. Krasnojarsk: Siberian Federal University; 2016. 292 p. (In Russ.).

8. Kochin V.N. Mathematical Model of Inverse Synthetic Aperture Radar. 1. Problem Statement.Acquisition Mode. Radiophysics and Radioastronomy = Radiophysics and Radioastronomy 2009;14(4):403–412. (In Russ.).

9. Fomin A.N., Kopylov V.A., Filonov A.A., Andronov A.V. Obshchaya teoriya radiolokatsii i radionavigatsii. Rasprostranenie radiovoln. Krasnojarsk: Siberian Federal University; 2017. 318 p. (In Russ.).

10. Kubanov V.P., Ruzhnikov V.A., Spodobaev M.Yu., Spodobaev Yu.M. Osnovy teorii antenn i rasprostraneniya radiovoln: uchebnoe posobie. Samara: INUL-PGUTI; 2016. 258 p. (In Russ.).