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1

Contemporary Military Threats in Space Domain

Radomska Aleksandra

Kwartalnik Bellona

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2021

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Nr 3

63--74

EN

Deliberations presented in the paper concern the problem of formation of a new type of military threats in space as a result of activities carried out by states. The aim of this research was to identify modern military threats in space, to make an assessment of the possibility of their destructive impact and operational use by the armed forces in different countries of the world. Theoretical research methods were applied, including: analysis, synthesis, conclusion, generalization. They allowed to achieve the research objective. In the course of research procedure it was established that among the most dynamically developing military threats in the space domain regarding the third decade of the 21st century are: the lack of situational awareness development on military activities in space, the prospect of using antisatellite weapons as an element of military aggression and threats coming from cyberspace with keeping their division into cyber and information ones. It is forecasted that another development of military threat in space will be the possibility of launching hypersonic missiles and using them to destroy any component of technical infrastructure with the intention of achieving the set political goals or causing a specific psychological effect by state actors.

PL

W artykule wskazano współczesne zagrożenia militarne w kosmosie, a także oceniono możliwości ich destrukcyjnego oddziaływania oraz operacyjnego wykorzystania przez siły zbrojne różnych państw. Zastosowano teoretyczne metody badawcze: analizę, syntezę, wnioskowanie i uogólnienia. Podkreślono, że dotychczas nie kształtowano świadomości sytuacyjnej działań militarnych w przestrzeni kosmicznej. Do największych zagrożeń militarnych w domenie kosmicznej w trzeciej dekadzie XXI wieku zaliczono perspektywę użycia broni przeciwsatelitarnej jako elementu agresji militarnej oraz działania o charakterze cybernetycznym i informacyjnym pochodzące z cyberprzestrzeni. Innym zagrożeniem militarnym w przestrzeni kosmicznej będzie możliwość wystrzelenia pocisków hipersonicznych oraz rażenie nimi dowolnych komponentów infrastruktury technicznej z zamiarem osiągnięcia założonych celów politycznych lub wywołania określonego efektu psychologicznego przez aktorów państwowych.

2

Determination of Sedimentary Basin Basement Depth : A Space Domain Based Gravity Inversion using Exponential Density Function

Chakravarthi V., Ramamma B.

Acta Geophysica

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2015

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Vol. 63, no. 4

1066--1079

EN

An automatic inversion using ridge regression algorithm is developed in the space domain to analyze the gravity anomalies of sedimentary basins, among which the density contrast decreases with depth following a prescribed exponential function. A stack of vertical prisms having equal widths, whose depths become the unknown parameters to be estimated, describes the geometry of a sedimentary basin above the basement complex. Because no closed form analytical equation can be derivable in the space domain using the exponential density-depth function, a combination of analytical and numerical approaches is used to realize forward gravity modeling. The depth estimates of sedimentbasement interface are initiated and subsequently improved iteratively by minimizing the objective function between the observed and modeled gravity anomalies within the specified convergence criteria. Two gravity anomaly profiles, one synthetic and a real, are interpreted using the proposed technique to demonstrate its applicability.

3

Parameter identification for stochastic burgers' flows via parabolic rescaling

Leonenko N. N, Woyczynski W. A.

Probability and Mathematical Statistics

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2001

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Vol. 21, Fasc. 1

1--55

EN

The paper presents a systematic study of classical statistical inference problems (parameter estimation and hypothesis testing) for random fields arising as solutions of the one-dimensional nonlinear diffusion equation with random initial data (the Burgers' turbulence problem). This nonlinear, hydrodynamic-type partial differential equation is an ubiquitous model in physics and engineering. This work can be seen as part of a larger program of developing statistical inference tools for complex stochastic flows governed by nontrivial, physically constrained dynamics.