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A MULTIFUNCTION SATELLITE BACKHAUL SYSTEM FOR AIRCRAFT FLIGHT TEST APPLICATIONSBell, John J. (Jack), Mileshko, James, Payne, Edward L., Wagler, Paul 10 1900 (has links)
International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, California / This paper will present the design of a network used to receive and record sensor data and provide voice
communications between a flight controller and the pilot of an aircraft undergoing flight testing in remote
areas. The network utilizes a completely self-contained mobile tracking subsystem to receive and relay
the sensor data and cockpit voice in real-time over a geostationary satellite. In addition to the aircraft
tracking and data/voice relay functions, the system also provides local data recording at the mobile station,
telephone and intercom connectivity between the mobile station and the control center, and remote
equipment setup via the satellite link.
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Antenna Tracking and Command Destruct Capabilities Based on Angular Velocity and AccelerationAltan, Hal 10 1900 (has links)
ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Most range safety telemetry tracking systems have antenna designs that feature an S-band (2200-2400 MHz) Telemetry Tracking and UHF-Band (400-450 MHz) Command Destruct feed along side an omni-directional antenna. The antennas must have, by design, high angular velocity (w) and acceleration (α) parameters to achieve these tasks. Generally, these parameters are user configurable through software and monitored through BIT (Built In Test) log files. The parameters are nominally set to their maximum values (ie. w=10 deg/sec and α = 15 deg/sec².) Considering the dynamics of a sample satellite launch vs. the ground tracking and omni antennas' combined capabilities, this document analyzes whether the target will stay within the beam.
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DEVELOPMENT OF AN UNMANNED AIRBORNE TELEMETRY TRACKING AND RELAY SYSTEMPho, Tam P., Wysong, Henry D. 10 1900 (has links)
ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Aerocross Systems, Inc. is developing a low-cost unmanned airborne telemetry relay system to
augment the USAF Air Armament Center’s Eglin Gulf Range instrumentation resources. The
system is designed to remotely autotrack and relay S-Band telemetry and VHF/UHF voice
communications from test articles beyond the line-of-sight of land-based instrumentation. The
system consists of a medium altitude/endurance Unmanned Aerial Vehicle (UAV), a Mission
Control Station, and a remotely operated telemetry/voice tracking and relay instrumentation
suite. Successfully developed and deployed, the system will contribute to lower range costs
while enhancing range instrumentation performance.
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A NEW HIGH EFFICIENCY, AGILE BEAM SCANNING, BROADBAND TRACKING ANTENNA FEEDRichard, Gaetan C. 10 1900 (has links)
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada / Two different types of tracking feeds are currently used in the majority of telemetry
tracking antenna systems when autotrack operation is required. They are of the conical
scanner or of the single channel monopulse family and they employ well known
technologies.
In broadband applications, these feeds all suffer from the same inherent degradation in
efficiency caused by their inability to maintain a constant crossover loss value and by
their failure to properly illuminate the reflector.
In high dynamics situations they can also generate unwanted and sometimes
detrimental modulation whenever on-axis tracking is not maintained.
In addition, currently available versions of the conical scanner are not capable of high
scan rates or of scan rate agility and they are ill-suited for use in tracking systems
based on non-orthogonal axes positioners.
This paper describes a new high efficiency tracking feed system based on proven
conical scanner technology. Its design incorporates features such as variable
crossover, steerable beam, high scan rates, scan rate agility as well as stable reference
coordinate system. In addition to these features, this new feed is also capable of
delivering, in all but one operational category, levels of performance superior to that
achievable to date by any other implementation of the conical scanner or of the single
channel monopulse technology.
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