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GEOOPTICS PROPRIETARY
CICERO Constellation Overview PROPRIETARY FIRST OPERATIONAL LAUNCH - - PowerPoint PPT Presentation
CICERO Constellation Overview PROPRIETARY FIRST OPERATIONAL LAUNCH - - PowerPoint PPT Presentation
CICERO Constellation Overview PROPRIETARY FIRST OPERATIONAL LAUNCH First launched January 12, 2018 on PSLV-C40 Also launched in November & December 2018 (PSLV and Rocket Lab) GEOOPTICS PROPRIETARY SATELLITES Two current operational
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Tyvak Endeavor 6U platform
GEOOPTICS PROPRIETARY
SATELLITES
Aft-facing occultation antenna for setting occultations Most upcoming satellites on new Tyvak Trestles platform
Will maximize duty cycle and enable new observations
Reliable Stable fine-pointing Significant margin on X-band downlink Power for 95% duty cycle
Two current operational satellites generating ~1100 occultations
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< 1.5 U volume < 10 W power draw
GEOOPTICS PROPRIETARY
CION INSTRUMENT
Developed by JPL, based on TriG GeoOptics funded Available for use by both Implemented by Tyvak and JPL System on Module (SoM) combining processor and FPGA
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GEOOPTICS PROPRIETARY
CION INSTRUMENT
All open-loop tracking for occultations GPS and Glonass tracking currently Galileo tracking planned for next month Ultra-stable oscillator allows “zero-difference” processing without a reference GNSS satellite Closed loop tracking for overhead GNSS satellites
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GEOOPTICS PROPRIETARY
ANTENNAS
- 10
- 5
5 10 15 120 140 160 180 200 220 240
RO Antenna Gain (dBi)
POD antenna is a single patch with wideband gain
Azimuth (deg)
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GEOOPTICS PROPRIETARY
OSCILLATOR
1.E-13 1.E-12 1.E-11 1.E-10 1.E-09 0.004 0.04 0.4 4 40
Allan deviation
Seconds
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Altitude minimum in QCed processed data:
~1.3km average ~750m median
Gain varies across the antenna pattern
SNRs, noise and inversion success rates do to Many occultations above 1000 V/V But some great occultations out to ±60 deg.
All gathered at 100 Hz open loop
GEOOPTICS PROPRIETARY
DATA CHARACTERISTICS
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GEOOPTICS PROPRIETARY
REFRACTIVITY STATISTICS
July 1-7 profiles that pass QC (NCEP model comparison)
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GEOOPTICS PROPRIETARY
EXAMPLE TEC DATA
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Level 1a data:
Occultations in opnGns format POD data in Rinex format Attitude data in several formats
Level 1b data:
POD solution in netCDF4 format Excess phase in netCDF4 format TEC in netCDF4 formats
Level 2 data:
Profiles in netCDF4 and BUFR formats
GEOOPTICS PROPRIETARY
CURRENT DATA STREAM
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More than 1100 total occs per day from 2
- perational satellites
POD from 20-24 GNSS satellites each second (per RO satellite) Currently 80% of Level 1a data delivered in 3-4 hours
Continuous latency improvements underway through additional ground stations and
- perations tuning
We expect to reach 80% within ~2 hours soon
GEOOPTICS PROPRIETARY
CURRENT DATA STREAM
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Accessible through an AWS S3 bucket Requires a (short) scientific license that basically requires:
Don’t redistribute the raw data in volume Don’t use it for commercial purposes
Currently two months of data, shortly all data available up to two weeks before present Email research-data@geooptics.com
GEOOPTICS PROPRIETARY
ALL SCIENCE DATA AVAILABLE
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2020
4-6 additional spacecraft First with dual RO antennas Galileo and Beidou Polarimetric RO GNSS reflection tests Data volume by Q3 2020: 5000 per day
Beyond
24 total RO spacecraft Polarimetric RO GNSS reflections Complementary instruments Data volume: 50,000 per day
GEOOPTICS PROPRIETARY
FUTURE PLANS
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GEOOPTICS PROPRIETARY
HISTORY OF DATA VOLUME
500 1000 1500
Occultations per day
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GEOOPTICS PROPRIETARY
HISTORY OF DATA VOLUME
2000 4000 6000 8000 10000 12000 14000
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