Global ETD Search

11	Technical Verification and Validation of TIS-B using VDL Mode 4 Fredriksson, Daniel, Schweitz, Anders January 2004 (has links) This report is a technical verification and validation of Traffic Information Service Broadcast (TIS-B) using the data link VDL Mode 4. The main objective of the report is to examine the usefulness of TIS-B considering the results from tests performed in the Stockholm Terminal Area and for the Advanced Surface Movement Guidance and Control System (A-SMGCS) at Arlanda airport. The results are compared with the requirements that have been set by the standardisation organisations ICAO, RTCA, Eurocontrol and Eurocae. TIS-B is however such a new concept, so most of the operational requirements have not yet been defined. The process for performing the evaluation of TIS-B involves three stages: · Study the requirements on TIS-B, ADS-B, radar and A-SMGCS. · Verify TIS-B by performing tests at Arlanda airport. · Validate the test results through analysis. A theoretical study of slot allocation optimisation is performed to decide how the slot allocation is to be implemented. The report includes a Functional Hazard Analysis (FHA). The FHA is done to see if the applications for TIS-B are ready for implementation or if more hazard preventing actions has to be taken, before any operational actions can be performed. The report also involves a theoretical introduction to Air Traffic Management (ATM), Surveillance techniques and TIS-B. All parts included in the report results in conclusions and recommendations regarding the TIS-B service. Technology VDL Mode 4 TIS-B A-SMGCS SCAA Arlanda Luftfartsverket NUP II STDMA FHA transceiver Slot allocation Traffic Information Service Broadcast ADS-B ASAS SSR SMR PSR TEKNIKVETENSKAP TECHNOLOGY TEKNIKVETENSKAP
12	Technical Verification and Validation of ADS-B/VDL Mode 4 for A-SMGCS / Teknisk verifiering och validering av ADS-B/VDL Mode 4 för A-SMGCS Eriksson, Matts, Lundmark, Jonas January 2002 (has links) <p>This report is a technical verification and validation of ADS-B (Automatic Dependent Surveillance – Broadcast) over VDL Mode 4 (Very High Frequency Data Link Mode 4) for the use in the surveillance element of an A-SMGCS (Advanced Surface Movement Guidance and Control System). </p><p>The main objective of this report is to examine if ADS-B/VDL Mode 4 fulfils the technical requirements for an implementation at Arlanda airport, Stockholm Sweden. The report also includes a FMECA (Failure Mode, Effects and Criticality Analysis), a theoretical background and methods for monitoring. </p><p>The process of making this report can be divided into three phases: </p><p>1. Preliminary Study. In this phase the requirements were examined and structured. </p><p>2. Verification. In this phase the system performance has been verified both theoretically and by several tests at Arlanda Airport. Simulation results have also been used. </p><p>3. Validation and documentation. The tests and verifications that were performed in phase 2 were validated in the third phase of the project. The final project document was also written in this phase. </p><p>The main conclusion from this analysis is that ADS-B/VDL Mode 4 is well suited for surveillance. ADS-B/VDL Mode 4 has the possibility to fulfil all considered requirements, apart from detecting all obstacles. But if all the requirements are going to be fulfilled depends both on the implementation and the operational environment. </p><p>The results from this verification and validation should be used as the technical subset in a future safety case, both in Sweden and internationally.</p> Technology VDL Mode 4 ADS-B A-SMGCS SMGCS Swedish Civil Aviation Administration SCAA Luftfartsverket NUP NUP II MAC STDMA FMECA GPS Surveillance Transceiver Transponder Monitoring Arlanda TEKNIKVETENSKAP TECHNOLOGY TEKNIKVETENSKAP
13	Housing...the Hillside, Los Angeles, California Vallen, Michael Earl 31 March 1998 (has links) This Thesis is a proposal for a prototypical hillside housing community in Los Angeles, California. As a prototype it is responsible for setting an architectural precedent. In this effort, the Thesis continues with focus on issues of construction methodology, urban planning, and land use relationships concerning the present city. Being clear and uncomplicated is the driving force of this architectural process. On the horizon is the 21st Century. Architecture has become increasingly convoluted rather than enlightened. Here, I have focused my attentions on developing a technologically based, material-driven, compassionate solution to answer the issue of housing on the hillsides of Los Angeles. I have realized a clear system of building using uncomplicated technology and material. However, as demonstrated, this system of building provides only an envelope for space definition. It becomes the architectural precedent, a canvas, through which the inhabitant can define his existence. Enlightened limitations. / Master of Architecture Housing Los Angeles Architecture Gill Neutra Schindler VDL II Research House Lovell Health House Lovell Beach House Kings Road House Horatio Court Apartments Lewis Court Greene and Greene Gamble House Los Angeles History

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