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- W3103892680 abstract "The downrange tracking station at Ascension Island (AMR Station 12) includes, as part of its instrumentation, a real-time data-handling system. Using digital techniques primarily, this system collects, records, and transmits data describing the trajectory of selected ballistic objects within range of the FPS-16 radar on Ascension Island. Among its functions, the data-handling system performs the following tasks:• Aids the FPS-16 radar in initial acquisition of the ballistic vehicle, and in reacquisition following any subsequent loss of track.• Records all raw data collected by the FPS-16.• Maintains communication with Cape Canaveral (and with other tracking stations when required) prior to, during, and after a flight.• Provides stations further downrange with real-time acquisition data in the form of updated orbital parameters.• Provides trajectory data to plotting boards and other instrumentation at Ascension Island.The UNIVAC 1206 Military Real-Time Computer is used as the central data processor. Associated with the computer are various data buffers, A/D and D/A converters, data recorders, and communication equipment.Information concerning a planned flight (nominal trajectory parameters and other data) is transmitted from the Cape to Ascension Island prior to lift-off. Shortly after burn-out, actual, measured, parameters are similarly transmitted, along with timing data.Within the computer, the dynamics of ballistic flight are simulated in real-time in order to predict the coordinates of the vehicle when it comes within range of the Ascension radar. The radar uses these data to acquire the target. After lock-on, the condition is reversed, with the radar supplying track data to the computer, and via the data-handling system to the entire range network. The mathematical treatment of the problem involves editing and smoothing the data (for which a combination technique is used), integrating the data to obtain a predicted position of the vehicle, and then extrapolating beyond the integration to obtain a still further look-ahead. The interval of integration and the manner of implementing it have been tailored to fit the particular conditions encountered at Station 12.The computer program may be considered as comprising two major routines: the initialization routine and the acquisition and track routine. The former routine is executed prior to lift-off and sets the initial conditions prevailing for a specific mission. The latter performs the real-time acquisition and tracking functions during the flight." @default.
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- W3103892680 date "1962-12-01" @default.
- W3103892680 modified "2023-09-26" @default.
- W3103892680 title "Data Handling at an AMR Tracking Station" @default.
- W3103892680 doi "https://doi.org/10.1109/afips.1962.42" @default.
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