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Fundamental and application aspects of radiating targets passive location amplitude-hyperbolic systems

DOI 10.18127/j20700784–201807–04

Keywords:

Yu.G. Bulychev – Dr.Sc. (Eng.), Professor, Leading Research Scientist, JSC «All-Russian Scientific Research Institute «Gradient» (Rostov-on-Don)
E-mail: ProfBulychev@yandex.ru
I.G. Nasenkov – Ph.D. (Eng.), General director, JSC «Techodinamika» (Moscow)
E-mail: info@tdhc.ru
E.N. Chepel’ – Head of Sector, JSC «All-Russian Scientific Research Institute «Gradient» (Rostov-on-Don)
E-mail: evgeny_c@bk.ru
A.V. Yachmenev – Russian Navy (Saint Petersburg)


Theory and practice of current passive location hyperbolic systems (PLHS) suggest that radiating target (RT) position estimations, generating on its basis, prove to be unreliable in many cases. PLHS functioning can be performed, involving uncertainty, under the conditions of interference of various types, faulty operation availability and even failure of discrete communication lines and receiving stations. It is evident that the most adequate way (among currently available) for PLHS-based estimation reliability growth (without station number increase) is that proposes certain information redundancy reaching using engaging not only time delays but other miscellaneous instrument signal parameters. All that brings into existence various variations of hyperbolic method and correspondingly PLHS. Disambiguation effort using inlet of optional items is generally inappropriate for a variety of technical-and-economic
reasons.
This problem as applied to triangulate systems can be effectively solved using goniometric-energy method (GEM) manipulating not only with RT bearings but with received signal amplitudes (energies). This pointing actuality is defined by increased quality of amplitude measurements and its processing techniques. GEM advantage is that it allows solving effectively given problems under minimum item number (single-position and two-position variants).
Argumentation of shared use of time-domain and amplitude measurements (by analogy with GEM) providing a means for amplitude-hyperbolic system construction that is capable for function-ing under the conditions of indeterminacy and even under its structure fundamental degradation (for example, when only two receiving stations kept operational) appears to be present-day by reason of mentioned. Combined amplitude-hyperbolic method of RT position determination is developed as applied to such system that registers wave amplitudes and arrival time on receiving stations sub-tracted time. Formulas that make it possible to examine method systematic error and accuracy char-acteristics for various viewing conditions are given. Comparative performance analysis of hyper-bolic and amplitude-hyperbolic systems is presented. Recommendations on the application of the method and computational experiment results are given.

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May 29, 2020

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