4106 risultati
1997rif. 297241PN. New. 1997. . Soft Cover. Date is original print. This is a reprint edition . PN paperback
2001rif. 1330343PN. New. 2001. Soft Cover. Date is original print. This is a reprint edition . PN paperback
2000rif. 1328572PN. New. 2000. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1990rif. 235453PN. New. 1990. Soft Cover. Date is original print. This is a reprint edition . PN paperback
2000rif. 91334Washington DC: United States General Accounting Office 2000. Presumed First Edition First Printing. Wraps. Very good. 47 1 pages Footnotes. Figures. Tables. A "Report to the Chairman Subcommittee on Strategic Forces Committee on Armed Services". The increasing use of military and commercial satellite systems for national security and business purposes will have significant implications for the United States in the 21st century. The Department of Defense DOD has traditionally used satellite systems in passive roles to support military operations-for example to collect intelligence data warn of ballistic missile launches transmit voice and data communications obtain meteorological data and provide navigation signals. Now plans are being developed to expand the use of military satellite systems and develop technologies such as lasers and electronic jammers that could be used to actively conduct combat operations from space. With advances in information technology the commercial use of satellites is also expanding particularly in telecommunications. In addition single satellite systems-for example navigation environmental and imagery systems-that originally served government missions are increasingly providing capabilities to both government and commercial users. The nongovernment applications are now generating large amounts of commercial revenue. National space policy treats U.S. satellite systems as national property that organizations have the right to operate without deliberate interference. To the extent that such interference were to occur the U.S. Space Command visualizes that military forces may be called upon to provide protection just as navies protected sea commerce. The U.S. Space Command's long-range plan and the Air Force Space Command's supporting strategic master plan provide for the protection of U.S. national interests and investments in space but they do not fully conform to DOD's new space policy. The plans propose space systems only and do not provide for an assessment of the cost-effectiveness of terrestrial-land sea and air-systems as alternatives to space systems which is called for in DOD's policy. An example of such a comparative assessment would be between satellite and aircraft radar systems. In addition DOD lacks the modeling and simulation tools necessary to perform such assessments a capability that is also called for in DOD's space policy. Finally it is unclear which DOD organization has the authority and capability to perform comparative assessments between space and terrestrial systems since such assessments are outside the purview of the U.S. and Air Force Space Commands. These factors prevent DOD from being assured that the most cost-effective approaches will be considered in making decisions on the expansion of space systems. The extent to which the Air Force's 18-year program projection supports planned military space programs and desired capabilities was unverifiable. Although several of the planned space systems such as a space-based radar and a space-based laser are included in the Air Force's program projection the cost estimates in the Air Force Space Command's strategic master plan were not directly traceable to the 18-year program funding projections. They were not traceable because the data were aggregated differently and program nomenclatures differed. Air Force Space Command representatives stated that they intend to institute changes to bring about consistency between the documents. A more important matter is uncertainty about the availability of several billions of dollars in funding increases that the Air Force has projected for space system expansion. During the first 6 years of the 18-year projection fiscal years 2000-05 programmed increases are uncertain because the President and the Congress have not agreed on overall funding increases to DOD. During the last 12 years of the projection fiscal years 2006-17 the Air Force relies on planned funding increases for program modernization without identifying funding sources thus creating additional uncertainty and putting the expansion of space systems in jeopardy for affordability reasons. DOD has not given sufficient attention to providing military personnel with space education to support future military space operations. DOD's new space policy requires that information about space force structure missions capabilities and applications be incorporated into professional military education. However joint military doctrine on space operations that is necessary to implement the policy has not been issued because of disagreement among the services on the doctrine's content. Leaving the disagreement unresolved hinders common understanding for the use of space systems in military operations. In addition until the doctrine is provided DOD and military service educational institutions will lack guidance for the development of space education curricula and for determining whether existing curricula need to be modified. This report contains recommendations to the Secretary of Defense that would 1 require space plans to include analyses of terrestrial systems as alternatives 2 establish the necessary modeling and simulation tools to perform such analyses 3 identify and/or establish the DOD office to perform the analyses 4 address the delay in completing joint doctrine for space operations and 5 provide the necessary instructions to DOD and military service colleges and schools for incorporating essential space information into professional military education curricula. DOD concurred with our recommendations and provided comments. United States General Accounting Office paperback
1997rif. 295400PN. New. 1997. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1996rif. 288425PN. New. 1996. Soft Cover. Date is original print. This is a reprint edition . PN paperback
2002rif. 1339669PN. New. 2002. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1996rif. 290779PN. New. 1996. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1990rif. 233571PN. New. 1990. Soft Cover. Date is original print. This is a reprint edition . PN paperback
2001rif. 1334729PN. New. 2001. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1993rif. 267807PN. New. 1993. Soft Cover. Date is original print. This is a reprint edition . PN paperback
2001rif. 1331016PN. New. 2001. Soft Cover. Date is original print. This is a reprint edition . PN paperback
2001rif. 1334731PN. New. 2001. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1997rif. 296240PN. New. 1997. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1994rif. 271949PN. New. 1994. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1996rif. 289365PN. New. 1996. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1991rif. 244349PN. New. 1991. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1993rif. 267786PN. New. 1993. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1991rif. 246766PN. New. 1991. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1990rif. 239982PN. New. 1990. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1992rif. 250964PN. New. 1992. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1999rif. 1319574PN. New. 1999. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1999rif. 1318880PN. New. 1999. Soft Cover. Date is original print. This is a reprint edition . PN paperback
1997rif. 294581PN. New. 1997. Soft Cover. Date is original print. This is a reprint edition . PN paperback