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Environmental satellites : weather and environmental information systems /
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
New York :
Nova Science Publishers, Inc.,
[2009]
|
| Colección: | Space science, exploration and policies series.
|
| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- ENVIRONMENTAL SATELLITES: WEATHER AND ENVIRONMENTAL INFORMATION SYSTEMS; CONTENTS; PREFACE; POLAR-ORBITING OPERATIONALENVIRONMENTAL SATELLITES:RESTRUCTURING IS UNDER WAY, BUT TECHNICAL CHALLENGESAND RISKS REMAIN; WHAT GAO FOUND; ABBREVIATIONS; RESULTS IN BRIEF; BACKGROUND; Polar Satellite Data and Products; NPOESS Overview; NPOESS Acquisition Strategy; NPOESS Experienced Cost Increases, Schedule Delays, and TechnicalProblems over Several Years; Nunn-McCurdy Process Led to a Decision to Restructure the NPOESSProgram; Earned Value Management Techniques Provide Insight onProgram Cost and Schedule.
- NPOESS ACQUISITION RESTRUCTURING IS WELL UNDER WAY, BUT KEY STEPS REMAIN TO BE COMPLETEDPROGRESS HAS BEEN MADE IN ESTABLISHING ANEFFECTIVE NPOESS MANAGEMENT STRUCTURE, BUTEXECUTIVE TURNOVER WILL INCREASE RISKS, ANDSTAFFING PROBLEMS REMAIN; NPOESS Program Has Made Progress in Establishing an EffectiveManagement Structure and Increasing Oversight Activities, butExecutive Turnover Will Increase Program Risks; NPOESS Program Has Filled Key Vacancies but Lacks aProgramwide Staffing Process.
- METHODOLOGY SUPPORTING THE JUNE 2006 COST ANDSCHEDULE ESTIMATE WAS RELIABLE, BUT RECENT EVENTSCOULD INCREASE PROGRAM COSTSCertified Program Estimates Were Developed Using an AcceptableMethodology; Recent Events Could Lead to Increased Program Costs or DelayedSchedules; MAJOR PROGRAM SEGMENTS ARE UNDER DEVELOPMENT, BUT SIGNIFICANT RISKS REMAIN; Space Segment-Progress Made, but Key Sensors Continue to FaceMajor Risks; Earned Value Data Show Problems on the Space Segment; Program Office Is Monitoring Sensor Risks and EvaluatingOptions; Ground Segment- Progress Has Been Made, but Work Remains.
- Ground Segment Cost and Schedule Are on Track Work and Risks Remain; Program Office Has Plans to Address IDPS Risks; Launch Segment-NPP Launch Preparation Has Begun, whileNPOESS Launch Planning Remains a Future Event; CONCLUSIONS; RECOMMENDATIONS FOR EXECUTIVE ACTION; AGENCY COMMENTS AND OUR EVALUATION; APPENDIX I: OBJECTIVES, SCOPE, AND METHODOLOGY; APPENDIX II: OVERVIEW OF SATELLITE DATA PROCESSINGALGORITHMS AND THE CALIBRATION AND VALIDATIONPROCESS; APPENDIX III:COMMENTS FROM THE DEPARTMENT OF COMMERCE; APPENDIX IV:COMMENTS FROM THE DEPARTMENT OF DEFENSE.