development of kari space debris collision risk...
TRANSCRIPT
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김해동
2008. 7. 17
Development of KARI Space Debris Collision Risk Management System
(KARISMA)
Dr. Kim, Hae-Dong
7 October 2015
AGI 1st International User Conference
Singapore
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Outline
• What is the KARISMA ?
• What features are in the KARISMA ?
• Functions
• Summary
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Project Members of KARISMA Development
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What is the KARISMA?
• KARISMA
– KAri Space debris RIsk MAnagement system
• Developed by KARI (Korea Aerospace Research
Institute)
– 2011.1 ~ 2013.12 (3 Years)
• Motivation of developing the KARISMA
– To monitor and deal with the collision risk for KARI Constellation
• Daily Operation at KARI Ground Station since Aug.
2014
– 4 LEO satellites (KOMPSAT), 1 GEO satellite (COMS)
• Total solution tool to make a decision if a collision
avoidance maneuver (COLA) is finally needed
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What features are in the KARISMA?
• Developed by mainly based on proven AGI’s
software
– STK/Engine, Astrogator, STK/PRO, STK/AdvCAT, ODTK
• Various optimization algorithms for generating COLA
planning
– Using MATLAB Global optimization toolbox
– 7 different optimization algorithms including heuristics algorithm
like GA, PSO, etc
• Developed by C# language
• 2D, 3D Display for conjunction events
• Using JSpOC’s TLE catalog and CDM
– Automated process with TLE catalog and CDM
– Trend Analysis with CDM Archive
• Various Type of Threshold for Conjunction Events
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What features are in the KARISMA?
• High precision OD using ODTK
– To process RADAR and Optical tracking data for space objects
• User Friendly Interface
– Designed by satellite operations experts
• Very Intuitive and easy operations
– Reflect satellite operations experience
• Sequential processing easily
• Automated E-mailing service with daily analysis
report
• Automated Text Messaging Service whenever
JSpOC’s CDM is arrived
• Fine Conjunction Assessment using JSpOC’s CDM,
High precision orbit from O/O or Radar/Optical POD
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Processing Flow
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Functions
• KARISMA consists of four major modules
– SMM : System Management Module
– CAM : Conjunction Assessment Module
– AMM : Avoidance Maneuver Module
– ODM : Orbit Determination Module
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SMM : System Management Module
• System management
• Database management
• External interface & Download
• Support
– JSpOC’s CDM History & Archive
– System log
– Global monitoring using TLE catalog
– Reporting & E-mailing & Text message automatically
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Main UI
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Current Status of Conjunction Risk for each satellite
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Satellite DB UI
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Setup 3D Model for User’s Satellites
Database for User’s Satellites
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FTP Download UI
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JSpOC CDM Download
NORAD TLE Download
Information of Ground Station
IGS DATA Download
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Global Monitoring UI
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Animation Button
Option for View-point
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CAM : Conjunction Analysis Module
• Screening (Coarse Assessment)
– using TLE catalog
– Automatic processing by scheduling
• Fine Assessment
– using various orbit source including CDM, precise orbit by o/o, POD by radar & optical measurement
– Send conjunction events to AMM for COLA planning
• JSpOC’s CDM assessment
– Using JSpOC’s CDM
– Automatic process when CDM arrives
• Support
– Trend analysis
– Conjunction Geometry analysis using VDF
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Trend Analysis of Conjunction
• Events update time vs. Miss Distance at TCA
• Events update time vs. Collision Probability at TCA
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3D Conjunction Analysis
• Covariance Ellipsoid
• RIC Distance
• Conjunction Geometry
• Animation
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Covariance of Primary object (User’s SAT)
Covariance of Secondary object
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Screening Setup UI
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Orbit source for User’s Satellites Orbit source for Space Objects
Covariance Value (or using Covariance File)
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Monitoring UI
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CDM Data Display
Modify threshold & Refreshing
Trend Analysis of Conjunction
Screening using TLE catalog
Fine Assessment using precise orbit
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Conjunction Analysis
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Compute SMM Scheduling UI
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Fine Assessment (Manual)
• Manual Analysis using provided orbit source by user
• Input : orbit source, covariance (File)
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Orbit source directory
Covariance input
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Trend Analysis
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Max. Collision Probability
Min. distance
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Conjunction Geometry (VDF)
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3D Earth view
2D Display
Covariance ellipsoid
Secondary object
Primary object
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Conjunction Geometry (VDF)
After Avoidance Maneuver
Before Avoidance Maneuver
Threatening Space Object
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AMM : Avoidance Maneuver Module
• Generate Collision Avoidance (COLA) Maneuver Plan
– Transferred from Event list of CAM Fine Assessment
• Optimization COLA
– 7 Optimization algorithms including heuristic algorithms
like GA, PSO
• Multiple, Complex Targeting
– Against for Multi-threatening objects
– Considering various operations conditions
• Ground-track maintenance, station-keeping
• Support
– Monte-Carlo simulation
– Post COLA burn analysis
– Re-assessment after COLA
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Flow-chart of COLA planning
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Select and Transfer Event at FA
Select Event at AMM
Select Optimization Goal
Input Desired Values
Select Control Parameter
Select & Input Constraints
Select & Input Optimizer Setup
Select Maneuver Strategy
Run
Result
Graph
Report
Monte-Carlo Simulation, Post Maneuver Analysis,
Post Screening
Save & Execute
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COLA – LEO CASE
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Event for COLA
Targeting for COLA
Monte Carlo simulation
최적화 알고리즘
프로그램 로그
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Orbit before COLA
Orbit after COLA
COLA Plan
Result of COLA
COLA – LEO CASE
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Delta-V Result
Optimization result
COLA – LEO CASE
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Monte Carlo Simulation
• Orbit uncertainty
• Thruster error
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Normal Maneuver - LEO CASE
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Orbit by o/o
After maneuver
Before maneuver
Targeting Setup
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COLA – GEO CASE
Analysis Time 2013.06.01 12:00:00.000 ~ 2013.06.10 12:00.000
TCA 2013.06.03 12:00:00.346
Number of Debris 4
CPA 100 m
Orbit GEO
Desired Property Min Range > 5km
Control Parameter Maneuver start time, R.I.C Direction Delta-V
Delta-V Constraint Max. +/- 1m/s
Maneuver Start Boundary TCA-361 ~ TCA –12 hr
Max Burn Duration 30sec
Function Evaluation GA, PSO, DE : Generation = 25, Population = 30
SA : Iteration = 750
Burn Strategy One Burn or Two Burn
Station Keeping Maintenance ±0.05deg(128.2deg E, 0 deg N.)
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• Example Setup for GEO COLA
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COLA – GEO CASE
• GEO COLA Result (1 Burn Case)
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Before COLA Maneuver
After COLA Maneuver
GA Fitness Value
GA Fitness Function
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ODM : Orbit Determination Module
• Precise orbit determination using ODTK
• Precise orbit prediction using STK/HPOP
• Processing GPS data, Radar data, Optic data
• Automatic OD processing (Optional)
• Comparison study
– KARI, ESA data
* We do not show any result using restricted data
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KARISMA
Tracking Data
ODTK STK/HPOP
POD OD
OP
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ODM UI
• ODM Main Windows
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Current CAM
Report
Current Automation
OD Schedule
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ODM UI
• Orbit Determination Windows
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Satellite DB & CAM
Object List
Orbit Determination
Setup (Tap Menu)
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ODM UI
• ODM Automation OD Setup Windows
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Current Automation
OD Schedule
Automation
Setup
Satellite
Setup
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ODM UI
• Orbit Prediction Windows
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Orbit Prediction
Setup
Satellite DB & CAM
Object List
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Summary
• Today, ‘Must-Have Item’ for Space Operations
• Cost-effective solutions as a decision maker
software for space debris conjunction risk
• Automated and Easy Operations for
24hours/7day/365 days
• Easily Applied to Flight Dynamics System
• Very User Friendly, Intuitive and Powerful
• Commercial version of the KARISMA,
CHARISMA, is released via AGI and KCEI (Korea)
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Thank you for your attention! Any Questions?
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