Search for broadband signals ground-based radio navigation system
Автор: Musonov V.M., Romanov A.P.
Журнал: Siberian Aerospace Journal @vestnik-sibsau-en
Рубрика: Informatics, computer technology and management
Статья в выпуске: 3 vol.23, 2022 года.
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In the present paper, a method of temporary search for broadband of frequency manipulation with minimal shift keying (MSK) signals of ground-based radio navigation systems (RNS) is considered. The method is based on a multi-alternative optimal signal detection (the signal may belong to one of the orthogonal signals) using the evaluation-correlation principle of processing (ECPP) under conditions of a priori uncertainty. The problem of representing broadband MSK signal as a signal with double discrete frequency-phase modulation (FPM) was solved. The law of phase manipulation in the form of a binary sequence of elements lb of a length code τ э L (in the “Sprut” RNS, 16383 L , 2.5 э mcs is the duration of the signal element) is defined through the law of frequency manipulation in the form of a binary sequence of elements ld of a known length L code. The representation of the signal in the form FPM allows, during correlation processing, to replace the correlation integral on the interval [0, τ]э L by L the sum of correlation integrals on the intervals [0, τ]э or by L the sum of element-by-element correlations. The calculation of element-by-element correlations allows the use of a matrix apparatus for the ECPP of the analyzed signal. With the technical implementation of the “search” procedure, there is no need to form 2L pairs of reference quadrature signals with the length L of the modulating code, and instead of that a pair of element-by-element correlations is memorized and over time τэ , according to a code element lkd , cyclically shifted by 1 k elements, frequency manipulation and a code element klb , cyclically shifted by 1 k elements, phase manipulation, block-by-block accumulation L of quadrature correlations is performed. The use of upper-left and lower-right triangular matrices with binary elements klb makes it possible to search for broadband MSK signal with additional phase manipulation of a discrete information message. The structure of the optimal algorithm of parallel search for ECPP of the broadband MSK signal with the use of a matrix apparatus, which allows to implement the optimal algorithm “of search” during the duration τэ L of the signal in real time.
Signals with frequency-phase manipulation, quadrature correlations, element-by-element correlations, binary matrix, upper (lower) triangular matrix
Короткий адрес: https://sciup.org/148329636
IDR: 148329636 | DOI: 10.31772/2712-8970-2022-23-3-391-408
Список литературы Search for broadband signals ground-based radio navigation system
- Tuzov G. I. Statisticheskaya teoriya priyoma slozhnykh signalov [Statistical theory of complex signal reception]. Moscow, Sovetskoe radio Publ., 1977, 400 p.
- Varakin L. E. Sistemy svyazi s shumopodobnymi signalami [Communication systems with noise-like signals]. Moscow, Radio i svyaz Publ., 1978, 304 p.
- Zhuravlyov V. I. Poisk i sinkhronizaciya v shirokopolosnykh sistemakh cvyazi [Search and synchronization in broadband communication systems]. Moscow, Radio i svyaz Publ., 1986, 241 p.
- Perov A. I. Osnovy postroeniya spytnikovykh radionavigacionnykh system [Fundamentals of building satellite radio navigation systems]. Moscow, Radiotechnika Publ., 2012, 240 p.
- Losev V. V., Brodskaya E. B., Korzhik V. I. Poisk i dekodirovanie slozhnych diskretnykh signalov [Search and decoding of complex discrete signals]. Moscow, Radio i svyaz Publ., 1988, 224 p.
- Ipatov V. P., Kazarinov Yu. M., Kolomenskiy Yu. A. Poisk, obnaruzhenie i izmerenie parametrov signalov w radionavigazionykh sistemakh [Search, detection and measurement of signal parameters in radio navigation systems]. Moscow, Sov. radio Publ., 1975, 296 p.
- Bondarenko V. N. Pomekhoustoychivost priyema spektralno-efektivnykh shumopodobnykh signalov [Noise immunity of receiving spectrally effective noise-like signals]. Krasnoyarsk, Sib. Feder. un-t Publ., 2015, 160 p.
- Bondarenko V. N. [Noise immunity of the noise-like signal time discriminator]. Radiotekhnika. 2009, No. 5, P. 26–33 (In Russ.).
- Makarov S. B., Zykin I. A. Peredacha diskretnykh soobshcheniy po radiokanalam s ogranichenoy polosoy propuskaniya [Transmission of discrete messages over radio channels with limited bandwidth]. Moscow, Radio i svyaz Publ., 1988, 304 p.
- Ipatov V. P. [Search for noise-like signals with minimal frequency manipulation]. Radiotekhnika. 1991, No. 6, P. 47–49 (In Russ.).
- Bondarenko V. N. [A quasi-optimal algorithm for finding a noise-like signal with minimal frequency manipulation]. Izvestiya vuzov Rossii. Radioelektronika. 2007, No. 4, P. 24–31 (In Russ.).
- Osborne W. P., Luntz M. B. Coherent and Noncoherent Detection of CPFSK. IEEE Trans. 1974. Vol. COM-22, No. 8, P. 1023–1036.
- Ipatov V. P. Shirokopolosnye sistemy i kodovoe razdelenie signalov [Broadband systems and code separation of signals]. Moscow, Tekhnosfera Publ., 2007, 487 p.
- Shumopodobnye signaly v sistemakh peredachi informazyi [Noise-like signals in information transmission systems]. Ed. V. B. Pestryakov. Moscow, Radio i svyaz Publ., 1982, 424 p.
- Bronshteyn I. N., Semendyaev K. A. Spravochnik po matematike dlya inzhenerov i uchashchikhsya vuzov [Handbook of Mathematics for engineers and university students. Moscow, Nauka Publ., 1986, 544 p.
- Fink L. M. Teoriya peredachi diskretnykh soobshcheniy [Theory of transmission of discrete messages]. Moscow, Sov. radio Publ., 1975, 727 p.
- Demidovich B. P. Osnovy vychislitelnoy matematiki [Fundamentals of Computational Mathematics]. Moscow, Fizmatgiz Publ., 1963, 660 p.
- Zynq – 7010, Key Featuresand Benefits.
