109 research outputs found

    CA Risk Assessment Condensation

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    ASW Covariance Introduction and Formation

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    3D Pc Operational Issues and Ways Forward

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    Systemy zarządzania wiedzą a efektywność innowacyjna przedsiębiorstw

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    The authors assume that the innovative efficiency of enterprises depends primarily upon an innovative method of management, which the management of knowledge is considered to be. The first part of the article discusses six pillars of a knowledge-based economy, followed by a comparison of detailed indicators of innovation in leading countries with this type of economy on the one hand and Poland on the other. Next, the conditions of innovative processes in an enterprise are discussed and specific recommendations made regarding the management of innovations, with an indication of the inspiration behind and sources of innovation and the qualities of a creative style of management, the remainder of the article discusses the flow of information on the business of an enterprise, the role of information management in the process of implementing innovations, and the most important values and skills which an enterprise should have.Autorzy przyjmują założenie, że o efektywności innowacyjnej przedsiębiorstw decyduje przede wszystkim innowacyjny system zarządzania, za jaki uważa się system zarządzania wiedzą. W pierwszej części artykułu omawiają sześć filarów gospodarki opartej na wiedzy, w kolejnej części przedstawiają porównanie szczegółowych wskaźników innowacyjności liderów tego typu gospodarki oraz Polski. Następnie omawiają uwarunkowania procesów innowacyjnych w przedsiębiorstwie oraz konkretne zalecenia dotyczące zarządzania innowacjami, wskazują również na inspiracje i źródła innowacji, a także cechy twórczego stylu kierowania. W dalszych częściach artykułu przedstawiony został wpływ innowacji na kierunki działania przedsiębiorstw, rola zarządzania wiedzą w procesie wdrażania innowacji oraz najważniejsze wartości i zdolności, kt.re powinno posiąść przedsiębiorstwo

    Solar Radiation Pressure Binning for the Geosynchronous Orbit

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    Orbital maintenance parameters for individual satellites or groups of satellites have traditionally been set by examining orbital parameters alone, such as through apogee and perigee height binning; this approach ignored the other factors that governed an individual satellite's susceptibility to non-conservative forces. In the atmospheric drag regime, this problem has been addressed by the introduction of the "energy dissipation rate," a quantity that represents the amount of energy being removed from the orbit; such an approach is able to consider both atmospheric density and satellite frontal area characteristics and thus serve as a mechanism for binning satellites of similar behavior. The geo-synchronous orbit (of broader definition than the geostationary orbit -- here taken to be from 1300 to 1800 minutes in orbital period) is not affected by drag; rather, its principal non-conservative force is that of solar radiation pressure -- the momentum imparted to the satellite by solar radiometric energy. While this perturbation is solved for as part of the orbit determination update, no binning or division scheme, analogous to the drag regime, has been developed for the geo-synchronous orbit. The present analysis has begun such an effort by examining the behavior of geosynchronous rocket bodies and non-stabilized payloads as a function of solar radiation pressure susceptibility. A preliminary examination of binning techniques used in the drag regime gives initial guidance regarding the criteria for useful bin divisions. Applying these criteria to the object type, solar radiation pressure, and resultant state vector accuracy for the analyzed dataset, a single division of "large" satellites into two bins for the purposes of setting related sensor tasking and orbit determination (OD) controls is suggested. When an accompanying analysis of high area-to-mass objects is complete, a full set of binning recommendations for the geosynchronous orbit will be available

    Atmospheric Model at JSpOC

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    Conjunction Assessment Screening Volume Sizing and Event Filtering in Light of Natural Conjunction Event Development Behaviors

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    Conjunction Assessment screening volumes used in the protection of NASA satellites are constructed as geometric volumes about these satellites, of a size expected to capture a certain percentage of the serious conjunction events by a certain time before closest approach. However, the analyses that established these sizes were grounded on covariance-based projections rather than empirical screening results, did not tailor the volume sizes to ensure operational actionability of those results, and did not consider the adjunct ability to produce data that could provide prevenient assistance for maneuver planning. The present study effort seeks to reconsider these questions based on a six-month dataset of empirical screening results using an extremely large screening volume. The results, pursued here for a highly-populated orbit regime near 700 km altitude, identify theoretical limits of screening volume performance, explore volume configuration to facilitate both maneuver remediation planning as well as basic asset protection, and recommend sizing principles that maximize volume performance while minimizing the capture of "chaff" conjunctions that are unlikely ever to become serious events

    Satellite Conjunction "Probability," "Possibility," and "Plausibility": A Categorization of Competing Conjunction Assessment Risk Assessment Paradigms

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    A number of different conjunction assessment (CA) risk analysis methods and metrics have been proposed in the critical literature, and they vary widely in purport and form. However, they tend to be proposed individually and episodically, so that it is difficult for a CA practitioner to take stock of the possibilities, under- stand their fundamental differences, and make informed choices for their particular CA risk assessment enterprise. The present study seeks to collect the major proposals for risk assessment methods and parameters and organize them categorically, under the proposed divisions of probability, plausibility, and possibility, as well as formulate what appears for each to be its fundamental question and, where applicable, null hypothesis. This activity can, through a bottom-up approach, provide some of the building blocks for an overarching CA philosophy, as well as establish concepts and terminology potentially useful to the broader discussion of these topics

    Satellite Conjunction Probability, Plausibility, and Possibility: A Categorization of Competing Satellite Conjunction Assessment Risk Analysis Paradigms

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    A number of different conjunction assessment (CA) risk analysis methods and metrics have been proposed in the critical literature, and they vary widely in purport and form. However, they tend to be proposed individually and episodically, so that it is difficult for a CA practitioner to take stock of the possibilities, under- stand their fundamental differences, and make informed choices for their particular CA risk assessment enterprise. The present study seeks to collect the major proposals for risk assessment methods and parameters and organize them categorically, under the proposed divisions of probability, plausibility, and possibility, as well as formulate what appears for each to be its fundamental question and, where applicable, null hypothesis. This activity can, through a bottom-up approach, provide some of the building blocks for an overarching CA philosophy, as well as establish concepts and terminology potentially useful to the broader discussion of these topics
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