enabling technology development: high cadence imaging spectrograph development low mass/power...
TRANSCRIPT
Enabling Technology Development:
• High cadence imaging spectrograph development
• Low mass/power instrumentation
• Advanced communication/DSN for future deployment to Sentinel or remote locations
Science Objectives:• Determine the most relevant observational signatures of
flare, CME, and Solar Particle Event (SPE) eruption • Identify precursor signatures which can be used to
forecast flare, CME, and SPE eruption • Identify what is needed to improve our ability to nowcast
and forecast space weather & SPEs• Identify the physical mechanisms of mass flow and
energy release in the solar atmosphere• Determine the interaction and connectivity of structures
throughout the solar atmosphere
Space Weather Imaging Sentinel (SWIS)
Mission Description: (Near/Intermediate Term)• Example Mission Design
- 1 spacecraft, 5 Hi-TRL instruments (4 remote, 1 in-situ) - L1 or Geo or 98°, 600 km sun-synch orbit
- continuous solar viewing
- 3-axis stabilized, 30 arc-sec pointing capability- Payload: 40 kg, 53 W, 2.2 Mbps
Measurement Strategy:• UV/EUV Imaging Spectrograph for flow velocities & energy buildup
& release signatures, both on the disk and off-limb (out to 3 Rs)• Filter Magnetograph for surface magnetic field measurements• Chromospheric/Coronal EUV Imagers for morphology and dynamics• Energetic Particles (SEP) measurements for event characterization• Coronagraph for detection & characterization of Halo CMEs
Associated RFAs:• RFA F1: “Understand magnetic reconnection as
revealed in solar flares, CMEs,…” • RFA F2: “Understand the plasma processes that
accelerate and transport particles.”• RFA J2: “Develop the capability to predict the origin
and onset of solar activity and disturbances associated with potentially hazardous space weather events.”
SWISInstrument Summary
Instrument Mass (kg) Power (w) Data Rate (Mbps)
UV/EUV Spectrograph 20 35 1
Filter Magnetograph 6 6 0.5
Chromospheric/Coronal EUV Imager(s)
5.6 3 0.5
Coronagraph 5.2 3 0.2
Energetic Particles Detector 3 6 0.01
TOTAL 39.8 53 2.21
• Instrument payload complement/characteristics provided by cognizant science advocates within Heliophysics community.
SWISConceptual Block Diagram
POWER
PAYLOAD ATTITUDE CONTROL
TELECOMMUNICATIONS
BATTERY
OMNIS
HGA
ChromosphericCoronal EUV
Imager(s)
FilterMagnetograph
UV/EUVSpectrograph
Energetic ParticlesDetector
Coronagraph
PYROTECHNICS
PROCESSOR & LOCAL MEMORYFLIGHT S/W - CMD, TLM, Fault Prot.
COMMAND &DATA HANDLING
HEATERSSENSORS
THERMOSTATS
THERMAL
POWERDISTRIBUTION
UNIT
REACTIONWHEELS
S/C POWER
BUSPWRAMP
DATAPROCESSING
UNIT
SOLAR ARRAYS
THERMALINTERFACE
UPLINK/DOWNLINKINTERFACE
DC/DC CONVERTER
TRANSPONDER
AVIONICS cPCI BACKPLANE
SCIENCE INSTRUMENT INTERFACE
SYSTEM I/O INTERFACES
COARSE SUN
SENSORS
TORQUEBARS
IMU
STARCAMERA
G
MAGNETOMETER