CEDAR Frontiers : An Incoherent Scatter Radar for Space Weather Monitoring High Quality Measurements as Input to Space Weather Models An Advanced Radar Design for a Space Weather Network Immediate Scientific Return From Always On Observations Never Miss An Interesting Event! Goal: A Revolutionary Advance For Space Weather Monitoring, Science, and Applications A Space Weather Incoherent Scatter Radar System Full Ionospheric Profiles Above and Below the F-peak High Space and Time Resolution Data Suitable for Input into Space Weather Models Operate Autonomously on a 24/7 Basis => Always On! Affordable For Use In Space Weather Networks Frank D. Lind, Philip J. Erickson, John M. Holt, John C. Foster MIT Haystack Observatory, Route 40, Westford, MA USA

CPI Tube and DTI Transmitter CPI 1MW UHF IOT Example DTI Transmitter A Fully Automated and Highly Efficient ISR Is now Possible! CPI High Power Pulsed UHF Inductive Output Tube Derived from Digital Television Transmitter Technology 100 kW of Average Power, 1 MW peak, 10% Duty Cycle, 70% Efficiency Variable Output Power In Response to Ionospheric Conditions 1 Tube System with a Typical Replacement Period of 5 Years DTI Transmitter Off the Shelf Technology Solid State Modulation for High Reliability

Modern Transmitter Design Cargo Container for Easy Transport Power, Fiber, Waveguide Fully Automated Remote Operations RF Amplifier Subsystem Cooling Subsystem Control and Monitoring Subsystem HV Power Subsystem HV and Cooling Power Supply Tube Assembly Focusing Magnet Cavity Tunin g ControlInterface ControlSensors CPI 1MW IOT SolidStateDriver DTI Power supply and Modulator HV Isolation cage with lockout ControlInterface HV Grounding Assembly ControlSensors 480 Volt three phase regulator 120 Volt single phase regulator ControlInterfaceControlSensors Breakers Boxes Metering ModularChillerSystemCargoContainer Air Conditioning ControlInterface Contro l Sensor s WR2100 RF OUTPUT Safety Subsystem RF Signal and Power Monitoring MIDAS- Mobile TX/RXControl Fiber Network Interface Failsafe TX Subsystem Control Fiber Control Interface Kirk Key System HV Interlock s HV Inhibit System RFInhibitSystem FireSupressionSystem RF & HV WarningLights Entry Sensors & Cameras RF Waveguide Tap Cargo Container

Space Weather ISR Prototype at Millstone Hill –A Fully Automated High Power ISR system –Low Risk Implementation –Uses Existing Millstone 68 meter Zenith Antenna ZIP Prototype Project Goals –An Always On Space Weather Radar System –A Revolutionary Advance For Space Weather Monitoring –High Quality Measurements as Input to Space Weather Models –An Advanced Radar Design for a Space Weather Network –Immediate Scientific Return From a Year of Observations Zenith Incoherent Profiler Prototype (ZIP) Frank D. Lind, Philip J. Erickson, John M. Holt, John C. Foster MIT Haystack Observatory, Route 40, Westford, MA USA