DTIC ADA239726: Analysis and Evaluation of Selected pdf

DTIC ADA239726: Analysis and Evaluation of Selected

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Selected applications of the Omega System Availability model are analyzed and compared. These application illustrate the range and scope of issues which may be addressed by the System Availability model. Three general applications at the primary Omega frequency of 10.2 kHz are described in terms of scenarios which postulate specific system conditions or configurations. These applications make use of the PACE workstation which incorporates the new 24- hour/4-month/2-frequency signal coverage database. The applications analyzed in this report include: (1) comparison of system availability using the previous (2-hour/4month/2-frequency) and new signal coverage databases, (2) comparison of global and regional system availability and the sensitivity of system availability to signal coverage access criteria thresholds, and (3) comparison of system availability as interpreted by conventional airborne Omega receiver/ processor signal deselection algorithms and PACE with baseline signal coverage access criteria. For most of the applications, system performance is examined in terms of three system station power level configurations: (1) all transmitting stations at full power, (2) a 6 dB power reduction at the Hawaii station (all other transmitting stations at full power), (3) Hawaii permanently off-air (all other transmitting stations at full power

• Creator/s: Defense Technical Information Center
• Date: 4/1/1991
• Year: 1991
• Book Topics/Themes: DTIC Archive, Morris, P B, ANALYTIC SCIENCES CORP READING MA, *DATA BASES, *WORK STATIONS, STATIONS, MODELS, COMPARISON, HAWAII, SIGNALS, ACCESS, POWER, TRANSMITTING, SCENARIOS, ALGORITHMS, AVAILABILITY

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