ESA UNCLASSIFIED - Releasable to the Public Quirin Funke Orbit Determination and Conversion Processes at the Space Debris Office
ESA UNCLASSIFIED - Releasable to the Public
Quirin Funke
Orbit Determination and Conversion Processes at the Space Debris Office
Quirin Funke | 14/07/2016 | Slide 2 ESA UNCLASSIFIED - Releasable to the Public
Outline
1. Where we come from 2. Orbit determination process 3. Ephemeris format conversion 4. CPF validation 5. Tracking campaigns 6. SCOOP
Quirin Funke | 14/07/2016 | Slide 3 ESA UNCLASSIFIED - Releasable to the Public
Where we come from
• Development & maintenance of debris environment and risk analysis tools MASTER-2009, DRAMA, see https://sdup.esoc.esa.int
• Acquisition & processing of measurement data • Operational & contingency support to ESA
and 3rd party missions (mainly LEOP, collision avoidance & re-entry)
• Coordination of ESA debris research • Contribution to ECSS, CCSDS and ISO
standards • Engineering Support (SSA, Clean Space) • Promotion of ESA-internal & public awareness
on space debris issues
The Space Debris Office is in charge of development and maintenance of an infrastructure in support of ESA’s commitment on space debris mitigation and risk reduction
Quirin Funke | 14/07/2016 | Slide 4 ESA UNCLASSIFIED - Releasable to the Public
Orbit determination process
internal ephemeris format
Orbit determination
Custom formats of several radar & optical sensors
CCSDS Tracking Data Messages CRDs
existing SCOOP project
Quirin Funke | 14/07/2016 | Slide 5 ESA UNCLASSIFIED - Releasable to the Public
Ephemeris format conversions
Converter
internal ephemeris format
CPF, OEM, …
Operational ESA orbit
Converter
JSpOC¹ (TLE, Conjunction Data
Message)
Propagator
CCSDS Orbit Ephemeris Message
Converter
1) Joint Space Operations Center (US military)
Quirin Funke | 14/07/2016 | Slide 6 ESA UNCLASSIFIED - Releasable to the Public
CPF conversion accuracy validation
Our CPF for Cryosat-2 based on operational orbit
Quirin Funke | 14/07/2016 | Slide 7 ESA UNCLASSIFIED - Releasable to the Public
CPF conversion accuracy validation
HTS CPF
Quirin Funke | 14/07/2016 | Slide 8 ESA UNCLASSIFIED - Releasable to the Public
CPF conversion accuracy validation
CDDIS CPF
Quirin Funke | 14/07/2016 | Slide 9 ESA UNCLASSIFIED - Releasable to the Public
Tracking campaigns close to re-entry
Joining SLR debris tracking campaigns with IADC (Inter-Agency Space Debris Coordination Committee) re-entry campaigns gives some benefits: • World-wide participation by IADC member agencies • TIRA Radar measurements tasked by ESA • Fairly good orbit available for an object close to re-entry • Improvement of re-entry prediction accuracy expected Laser ranging in first campaign (CZ-2C upper stage in June) not successful due to bad weather at Wettzell and Graz Next campaign for AVUM (Vega upper stage) starting end of October.
Quirin Funke | 14/07/2016 | Slide 10 ESA UNCLASSIFIED - Releasable to the Public
What is SCOOP?
• Web-based platform prototype hosted by ESA • Support coordination of collaborative observation campaigns • Combine measurements from different sensor types • Targeted at contingency support, re-entry or validation campaigns • Not for routine tracking • Provide backend services for
• orbit determination • pass prediction • data correlation
• Existing processes will be integrated in backend • Free to use
Quirin Funke | 14/07/2016 | Slide 11 ESA UNCLASSIFIED - Releasable to the Public
SCOOP usage scenario
SCOOP frontend SCOOP
backend & database
TDM
insert TLE run PP
OEM, CPF, textual PP
User 1
Initiate campaign
CPF Consolidated prediction format
CRD Consolidated laser ranging data format
OD Orbit determination
OEM Orbit ephemeris message
PP Pass prediction
TDM Tracking data message
TLE Two-line element set
Run PP with TLE
User 2
User 3
textual PP, OEM
CPF, OEM
CRD, TDM insert TDM run OD, PP insert CRD run OD, PP
Quirin Funke | 14/07/2016 | Slide 12 ESA UNCLASSIFIED - Releasable to the Public
Summary
• Translation from various formats to CPF possible • Orbit determination with measurements from different sensors possible • Made available via SCOOP web-based platform • Interesting for special observation campaigns like contingencies, re-
entries, and validation campaigns • End-to-end validation of orbit determination and format conversion
processes still to be done • SCOOP workshop in Jan./Feb. 2017