Sergey P. Barinov – Corresponding Member of Russian Academy of Engineering, Dr.Sc.(Eng.), Senior Research Scientist, Deputy General Director
Yury I. Majewski – Dr.Sc.(Eng.), General Product Engineer of REW System, Deputy General Director on Research and Development, SPIN-code
Andrey A. Novikov – Director General ad interim
In the synthesis and analysis of algorithms for optimal spatiotemporal signal processing in networked radar systems (NRS) we assumed that spaced apart receiving system handles wide-band noise jammer with bandwidth essentially wider than bandwidth of receiving elements. At the same time it is known that one of the most promising jams is narrow-band noise (or noise with narrow-band component) with bandwidth essentially smaller than signal bandwidth (receiving channel bandwidth). Physics of such jam interference is in its narrow-band component with wide time autocorrelation function (ACF) produce false marks in all elements of current system analysis zone and covers up the true mark.
The purpose of this article is to estimate the characteristics of networked radar system detection while handling the wide-band and narrow-band jammer. To achieve this goal, the article solves two main tasks: development of procedure of calculation of the wideband and narrow-band jammer detection probability; assessment of the characteristics of NRS detection while handling the wideband and narrow-band jammer. In order to solve the first problem we used methods of optimal spatiotemporal signal processing theory to receive analytical expressions for the calculation of characteristics of networked radar system detection with presence of narrow-band noises with bandwidth essentially lower than receiving elements bandwidth.
To solve the second problem of assessment the potential possibilities of NRS’s jammer detection we suppose following: optimal coherent signals and jams processing is realized in the system; the bandwidth of wide-band jam is essentially wider than receiving elements bandwidth, and bandwidth of narrow-band jam is essentially smaller than receiving elements bandwidth.
The numerical method used for calculations shows that the probability of detection of sources of external interference significantly depends on the power ratio of broadband and narrow-band jammings, and also on equivalent noise spreading ratio of narrow-band jamming equal to the product of a difference of signal path delay from jammers to receiving elements on width of a range of a narrow-band jamming. We defined the conditions when detection of target wide-band jammer in narrow-band noise environment is almost impossible neither by signal nor by noise.
Barinov S.P., Mayevskii Yu.I., Novikov A.A. Analysis of characteristics of networked radar system detection in condition of wide-band and narrow-band jammer. Radioengineering. 2020. V. 84. № 11(22). P. 7−12. DOI: 10.18127/j00338486-202011(22)-02. (in Russian)
- Kremer I.Ya., Kremer A.I. i dr. Prostranstvenno-vremennaya obrabotka signalov. Pod red. I.Ya. Kremera. M.: Radio i svyaz. 1984. (in Russian)
- Chernyak B.C. Mnogopozitsionnaya radiolokatsiya. M.: Radio i svyaz. 1993. (in Russian)
- Perunov Yu.M., Fomichev K.I., Yudin L.M. Radioelektronnoe podavlenie informatsionnykh kanalov sistem upravleniya oruzhiem. M.: Radiotekhnika. 2003. (in Russian)
- Barinov S.P., Maevskii Yu.I., Sergeev V.I. Analiz kachestva algoritmov optimalnoi prostranstvenno-vremennoi obrabotki signalov pri nalichii oshibok opredeleniya dalnosti do tseli. Radiotekhnika. 2018. № 11. S. 123−128. (in Russian)
- Barinov S.P., Grib V.N., Maevskii Yu.I. Vliyanie mnogotochechnykh korrelirovannykh pomekh na effektivnost funktsionirovaniya setevoi radiolokatsionnoi sistemy. Radiotekhnika. 2016. № 1. S. 18−28. (in Russian)