V.V. Utkin – Ph.D.(Eng.), Associate Professor, Scientific and Pedagogical Worker,
Cherepovets Higher Military Engineering School of Radio Electronics
E-mail: cvviur6@mil.ru
R.R. Mukhamedov – Scientific and Pedagogical Worker,
Cherepovets Higher Military Engineering School of Radio Electronics
E-mail: cvviur6@mil.ru
A.A. Kuzmin – Ph.D.(Eng.), Associate Professor, Scientific and Pedagogical Worker,
Cherepovets Higher Military Engineering School of Radio Electronics
E-mail: cvviur6@mil.ru
M.N. Zaitsev – Ph.D.(Mil.), Scientific and Pedagogical Worker,
Military Academy of Aerospace Defense (Tver) E-mail: cvviur6@mil.ru
The article presents the method and structure of a holographic direction finder, which can be used to determine directions to several simultaneously functioning sources of narrow-band signals with close or equal carrier frequencies.
The considered option of a multi-base phase interferometer with a large number of different and differently oriented bases allows a large volume of spatial signal to be sampled, that is, the signal received at these antennas depends not only on time, but also on the location of the receiving antenna if they form a spatial sample and if Since this spatial sampling is sufficient, information for this volume can be extracted not only about one signal, but about two or more signals, namely by definition of such a The graphic direction finder is capable of simultaneously detecting multiple sources with similar or equal frequencies.
To find the bearing of the source of radio emission, it is necessary to have a set of reference radio holograms, each of which is calculated in advance for a certain direction. The result of comparing the current radio hologram with all the samples of the reference radio hologram allows you to determine the bearing on the source of radio emission as the value of the reference radio hologram, for which there is a maximum output effect.
It should be noted that the task of two-signal (and more) reception is more complicated, since it can be observed:
merging of the maxima of each of the sources into one global maximum, if the sources in the bearing are close to each other. bias of estimates of each bearing due to the mutual influence of signal emissions. masking the signal emission of a «weak» source, side lobes of the signal emission of a «strong source».
The method maintains operability for noise (barrage and aiming in frequency) signals, provided that the spatial correlation interval of such signals is greater than the linear dimensions of the direction finder antenna system.
The main thing is that noise-like signals come from different directions, and up to a certain limit, this spatial sampling allows you to extract this information. Thus, the use of a holographic direction finder to perform these tasks is relevant.
- Baskakov S.I. Radiotekhnicheskie tsepi i signaly: Uchebnik dlya vuzov po spets. «Radiotekhnika». Izd. 2–e, pererab. i dop. M.: Vysshaya shkola. 1988. (in Russian)
- Perov A.I. Statisticheskaya teoriya radiotekhnicheskikh sistem: Ucheb. posobie dlya vuzov. M.: Radiotekhnika. 2003. (in Russian)
- Tikhonov V.I. Optimalnyi priem signalov. M.: Radiotekhnika. 1983. (in Russian)
- Dmitriev I.S. Potentsialnaya tochnost opredeleniya koordinat istochnikov radioizluchenii mnogopozitsionnymi radiotekhnicheskimi sistemami. Materialy XIV Mezhdunar. nauchno-tekhnich. konf. «Radiolokatsiya, navigatsiya, svyaz – 2008». 15−17 aprelya 2008. Voronezh: VGU. V 3-kh tomakh. T. 3. S. 2263−2272. (in Russian)
- Boev S.F., Chebotar I.V., Laptev I.V. Algoritm opredeleniya parametrov dvizheniya vozdushnogo ob’ekta s bortovym istochnikom radioizlucheniya dinamicheskoi sistemoi radiotekhnicheskogo monitoringa. Naukoemkie tekhnologii. 2017. T. 18. № 11. (in Russian)
- Morozov A.V., Nyrtsov A.N., Shmakov N.P. Elektrodinamika i rasprostranenie radiovoln. M.: Radiotekhnika. 2007. 408 s. (in Russian)
- Pavlov V.A., Tikhonenko A.V. Metodika rascheta vremeni zaderzhki korrelyatsionnoi matritsy signalov dlya obespecheniya kontrolya diapazona chastot. Vestnik Voronezhskogo voennogo instituta (Voronezh: VAIU). 2009. № 3. S. 99−105. (in Russian)
- Chernyak V.S. Mnogopozitsionnaya radiolokatsiya. M.: Radio i svyaz. 1993. 416 s. (in Russian)
- Berdynskikh L.N., Utkin V.V., Voinov D.S. Otsenka vozmozhnosti realizatsii odnopozitsionnogo sposoba opredeleniya mestopolozheniya nepodvizhnykh istochnikov radioizlucheniya. Deponirovannaya rukopisnaya rabota. 46 TsNII MO RF. 2015. № B8692. (in Russian)
- Denisov V.P., Dubinin D.V. Fazovye pelengatory. Tomsk: Tomskii gosudarstvennyi universitet sistem upravleniya i radioelektroniki. 2002. 251 s. (in Russian)