autonomy in airborne systems - application to...
TRANSCRIPT
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AUTONOMY in AIRBORNE SYSTEMS -
APPLICATION to UAVs
Pierre Helie Head of Operational and Future Systems Concept Analysis
Dassault Aviation
1
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Plan
Why Autonomy
Definitions related to autonomy
Autonomy considerations for UAV systems
design
Derivation process
Technology
Illustration
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WHY AUTONOMY?
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Why autonomy?
Autonomy has emerged naturally in airborne
systems during the past years due to :
– Development of technologies such as
• Digitalisation (processing, sensors, communications…)
• Multi function Displays
• Advances in « Artificial Intelligence »
– A need to cope with increased capacity of systems (&
complexity of missions)
– A necessity to stick with limited crew size
Autonomy will continue to develop due to
emergence of UAVs
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Some example
Crew Trends in aeronautics during the last
20years
Civilian A/C : crew reduction
– Direct Operating Cost
Military A/C : limited crew (1 or 2)
– Multi role (vs specialised)
– Increased capability of systems
– More severe rules of engagement
Emergence of UAVs
– Off the scene crew Common Facts
•Human Kept in the loop
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Rafale Multi Role
Super Etendard Air to Surface attack
Fighter evolutions
Air to Surface Radar
LDP Pod
Radar Warning Receiver
Multi mode Radar
•Air to Air
•Air to Surface
IRST
LDP Pod
ESM
Data Link
Still
One Pilot
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Large UAV (1T+) emergence
ISR UAV : a surveillance A/C without crew on
board
– Intelligence & surveillance
– Permissive environment
– Mostly single A/C operations
UCAVs : a combat A/C without crew on board
– Strike & Recce
– Non permissive environment
– Multiple A/C operation
MALE UAV
Dassault Aviation
NEURON
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UAV emergence : Common Facts
• Relaxed Air Vehicle design constraints
• Less Human Factors (HF) limitations (physical
stress, sortie duration, risks…)
• Need for communications
• Keep man in the loop of critical decisions
• Safety of flight,
• Lethality : Identification, Weapon release
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Plan
WhyAutonomy
Definitions related to autonomy
Autonomy considerations for UAV systems
design
Derivation process
Technology
Illustration
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DEFINITIONS RELATED TO
AUTONOMY
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Definitions related to Autonomy
An Automatic System can be described as self-steering or self-regulating.
An automatic system is able to follow an externally given path/plan while
compensating for small deviations caused by external disturbances.
However, the automatic system is not able to define the path according to
some given goal or to choose the goal dictating its path.
An Autonomous System is able to achieve operational goals in
unpredictable situations without systematically requesting human
intervention. The autonomous system is able to elaborate or modify plans
complying with operational goals and adapt the goals to the actual
situation. An autonomous system is able to make a decision based on a
set of rules and/or limitations. It is able to determine what information is
important in making a decision.
The autonomous system uses automatisms to execute the plan(s)
The level of autonomy corresponds to the level of intervention of the
human
[From NIAG SG 75-2004]
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novemb
re 13
12
AUTOMATIC
DIRECT
SUPPORT
IN SUPPORT
ADVISORY
AT CALL
COMMANDED
5
4
3
2
1
0
INTERRUPT
REVOKING
ACTION
ACCEPTANCE OF ADVICE
AUTHORISED ACTION
ACCEPTANCE
OF ADVICE
FULL, REQUESTING
ADVICE IF REQUIRED
OPERATOR FULL
AUTHORITY
AUTONOMOUS
ADVISED ACTION
UNLESS REVOKED
ADVICE, ACTION
IF AUTHORISED
PROVISION OF
ADVICE
ADVICE ONLY
IF REQUESTED
OPERATOR
AUTHORITY SYSTEM
AUTONOMY
OPERATOR
AUTHORITY
SYSTEM
AUTONOMY
Level Of Autonomy PACT* Definitions
MODES
OPERATOR FULL
AUTHORITY
A
S
S
I
S
T
E
D
LOA
*PACT = Pilot Authorization and Control of Tasks [R Taylor -NATO RTO HFM 078]
LOA : Level Of Autonomy
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Other aspect : variability
Knowledge
Usage – User initiative e.g. speed limiter on a car (off, stand by, active)
but needs for ad’hoc displays and controls
– System initiative : critical issue with respect to criteria identification and system validation!!!
[From NIAG SG 75]
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Automation & Autonomy Design challenges
Automation to relax or substitute to operator tasks
(workload, feasibility…); e.g :
– Flight control
– Assisted Target Recognition
Automation might be mandatory
– e.g. to cope with loss of communications at least to guarantee a
safe flight termination (this situation has to be regognised and the
decision made by the system)
Autonomy functions to contribute to decision process
– Awareness
– Field of solutions definition/exploration
– Select actions
Autonomy and automation are both requested for
UAVs
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Plan
WhyAutonomy
Definitions related to autonomy
Autonomy considerations for UAV systems
design
Derivation process
Technology
Illustration
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UAV SYSTEMS DESIGN CRITERIA
AND CONSTRAINTS
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UAV System overview Main elements
Communication infrastructure
Air Segment
Control
Segment
Line Of Sight
(LOS)
Beyond Line Of Sight (BLOS)
UCS : UAV Control Segment
PCS : Payload Control Segment
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UAV emergence
Main Challenges
Communication Robustness
– Insatiable demand for bandwidth
– Availability vs controlled behavior in case of loss
Interoperability of systems
Vulnerability (e.g. cyber attacks)
Inability to deal with ambiguity in the same way as
manned aircraft
– Autonomy, Man Machine cooperation
– Complex situation coverage
Response times
Legal and ethical aspects
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UAS Autonomy Drivers and constraints
Ressources
Costs
Human Factors
Tasks
Technology
capability
Rules
Mission
Environment
Constraints
Regulations ROEs …
Interoperability
Drivers
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UAV Systems design
[From United States Air Force Scientific Advisory Board 2010 :
Operating Next-Generation Remotely Piloted Aircraft for Irregular
Warfare»]
Missions and
Control challenges
MALE UAV Dassault Aviation Neuron
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UAS Autonomy Human Factors aspects
Selection of the LOA for a system will drive the role of the operator but too the
way human will cooperate with the machine and the possible inherent risks to
this cooperation, shifting from human in the loop to human on the loop
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Men and Machines Who does best?
Core human capability
+
Education & Training
Technology Enablers
Fitt’s List
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Men and Machines What risks?
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UAS Autonomy Ressources
Autonomy implementation will request the availability of technical ressources to
implement the new technology such a processing power and communication
capability.
Part of the ressources are the development process and associated tools that
will support the demonstration of the system properties
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External Ressources The example of communication
LOS or BLOS
Constraints
– Spatial Coverage
– Throughputs
– Latences
Availability
Access time
Cost Inmarsat Data 2010
LOS : Line Of Sight
BLOS Beyond Line Of Sight
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UAS Autonomy Cost considerations
Cost is key of every system acquisition through the Life Cycle Considerations
from development to operations
Autonomy of systems and in the particular case of UAVs can be perceived as
an opportunity for cost reduction
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Costs
Component of Cost (Life Cycle Cost)
– Non Recurring Costs (NRC)
– Recurring Costs (RC)
– Operating and Support Costs (OSC)
Two aspects of OSC driven by Autonomy
choices
– Communications (BLOS, Availability, Throughputs)
– Personnel (Qualification & training, Numbers)
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Mission Personnel
State of the art, typically :
– A mission commander
– A payload operator
– A remote pilot
Possible opportunity
– Decrease the « Cockpit » ratio
– Operator Role : Man to purpose vs man to system
– Operator Location flexibility
• On ground : Fixed or Deployable Control station
• Embedded : Fighter, Ship Mission A/Cs
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( ) Fighter
UCAV
? CS
UAV ISR
CS
UCAV platform operation CS challenges
UCAV
Fighter
Flight controller
Mission controller
Systems operator UCAV OB controller
How many operators for 1 UCAV?
How many operators for several UCAVs?
Location of controler?
On ground? Airborne? Shipborne?
Deployed? Fixed?
CS
( ) CS
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UAS Autonomy Interoperability considerations
Autonomous system will have to be used in operational environments where
they will have to perform beside of in cooperation with other systems featuring
different LOA
In the Aeronautical field this is/will be the case of UAV (possibly different types
and different LOA) operating with Legacy Manned Suystems
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Interoperability and autonomy
Issues
– Be able to operate Autonomous systems (UAVs) in Complex
networked systems (« systems of systems »)
– Transparency wrt to level of autonomy of participants
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Interoperability Integration to SoS
( ) Fighter ( ) Fighter
UCAV UCAV
? CS
UAV ISR
CS ToG
ATM C2
( ) CS ( ) CS
•Simultaneous operation of different systems featuring different level of autonomy
•Pooling/Sharing ressources such as Control Station
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( ) Fighter ( ) Fighter
UCAV UCAV
UAV ISR
ToG
? CS
ATM C2
Decrease of operator number?
Different Roles for operators?
Form of Dialog?
Operator cooperation issues?
Location of CS (deployed or not)?
Ressource transparency and sharing?
Shared workspace?
Interoperability Integration to SoS : pooling & sharing illustration
CS
( ) CS ( ) CS
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Autonomy and interoperability axes for solutions
Issues
– Be able to operate Autonomous systems (UAVs) in Complex
networked systems
– Transparency wrt to level of autonomy of participants
Standards
– They define interfaces
– They define a list of information and associated format
– They define exchange protocols
Example of standards that could be considered
•Link16,
•STANAG 4586
•FIPA,
•SAE Air 5665A
BML : Battle Management Language
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Stanag 4586 principle
Level of Interoperability (LOI)
Level 1: Indirect receipt and/or transmission of sensor product and associated metadata, from the UAV.
Level 2: Direct receipt of sensor product data and associated metadata from the UAV.
Level 3: Control and monitoring of the UAV payload unless specified as control (C) only or monitor (M)
only.
Level 4: Control and monitoring of the UAV, unless specified as control (C) only or monitor (M) only, l
ess launch and recovery.
Level 5: Control and monitoring of UAV launch and recovery unless specified as control (C) only or
monitor (M) only.
AV
VSM
CORE
UCS
C4I
SYSTEM
CCISM
OPERATOR
DLI
CCI
HC
I
C4I
SYSTEM
CCI
LAUNCH &
RECOVERY
SYSTEMUCS
AV
VSM
CORE
UCS
C4I
SYSTEM
CCISM
OPERATOR
DLI
CCI
HC
I
C4I
SYSTEM
CCI
LAUNCH &
RECOVERY
SYSTEMUCS
Set of standardised Interfaces •DLI Data Link Interface
•CCI Contol Command Interface
•HCI Human Computer Interface
Interoperable
Control
Stations
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Autonomy and interoperability
axes for solutions
Issues
– Be able to operate Autonomous systems (UAVs) in Complex
networked systems
– Transparency wrt to level of autonomy of participants
Standards
Support Dialog between man and « robots »
– Structured C2 language
– Interpretable by men and system(s)
– Example of BML (Battle Management Language)
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BML : Structured C2 language
Origin
– Developped initialy for System of Systems simulation for C2
emulation, robots simulation (SISO)
– Based on C2 Data base et interfaces structures
– Natural Shift towards a real C2 language
Structuration principles : following the « 5W » rule
To be adapted to the domain of airborne systems
(Ontology)
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UAS Autonomy Rules : example of ROEs
Autonomous system will have to encompass a set of rules coming from
various areas : regulations (eg see & avoid, safety, tactical, legal, ethical)
In non autonmous systems these rules are part of the operator background
knowledge
Perceived Issues
•Generation of the rules
•Validation of the rules
•Implementation of the rules
•Life Cycle of the rules
(mission, theatre, technical
standard, product life…)
ROEs : Rules of Engagement
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ROEs : basic structure
Domain of the action (physical space, type
of actions…)
Forbid-Authorise
– Nature of action : fictive/simulated, warning, real
– Conditions :
• Object/person of interest : presence/position , behavior,
perceived risks (for itself, for others….)
• Ressources : requested, authorised, forbidden
• Limitations : Collateral Damage, Behavior (open, covert),
unacceptable disturbance
• Actors/authority : who decides (eg Weapon Release
authority)
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Plan
Why Autonomy
Definitions related to autonomy
Autonomy considerations for UAV systems
design
Derivation process
Technology
Illustration
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AUTONOMY DERIVATION
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Autonomy derivation : Steps
Task analysis
– Analysis Grid for Task decomposition :
• Inspired by OODA loop
– Nature of tasks in an aerial combat system
• Mission, Survivability, Safety, Supervision
– Tasks analysis through mission phases
Assessment of
– Technology capability
– Targeted Role of operator
– Capability of operator
Targeted LOA
LOA : Level of Autonomy
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Reference : OODA loop (J Boyd)
The OODA loop (for observe, orient, decide, and act) is a concept originally
applied to the combat operations process, often at the strategic level in
military operations. It is now also often applied to understand commercial
operations and learning processes. The concept was developed by military
strategist and USAF Colonel John Boyd
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OODA : Nature of tasks
OODA Observe Orientate Decide Act
RAC Recognise-Act –Cycle
SA Situation Awareness
BOAS Behavior Orientated Autonomous Systems
From NIAG SG75
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Tasks and MMI
Mirage 2000 (1st gen) Rafale
OODA Mission
OODA Survivability
OODA Safety
Supervise/Compromise
External OODA
(request/accept)
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Generic mission Phases
Mission
Planning Taxi & Toff
Navigate to
Assigned area Mission
De brief
Approach,
Land & Taxi
Navigate to
Base
Survivability
management
Safety management
(health status, collision avoidance…)
Ingress Egress
Ressources management
(fuel, effectors, chaff, flares…)
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ASSESS Engagement Phase : F2T2EA
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Survivability
OODA applies
Two main loops : short and middle/long term
– Short term : mostly open loop
– Middle long term : Re plan
Detect
Threats
Assess
Risks
React
Survivability
Strategy
Select
Reaction
APPLY
STRATEGY
SHORT
TERM
MIDDLE/LONG
TERM
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Safety
Basic Air vehicle control tasks
– Platform monitoring
• Health monitoring/Critical failure management
• Configuration control
– Maintain flight enveloppe
– Flight Path control
• Ground Collision Avoidance
• Mid Air Collision Avoidance (See and avoid rule)
– ATC compliance
Weapon release
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Mission Phase
Mission tasks
xxx yyyy xxx xxx
Survivability tasks
xxx
Safety tasks
xxx yyy
xxx
xxx
Supervision tasks
xxx
Tasks representation by mission phase
Sequential
Sim
ulta
neous
Dash boxes represent tasks that are
identical to the task at the root
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Taxi Take Off example
Mission
Planning Taxi & Toff
Navigate to
Assigned area Mission
De brief
Approach,
Land & Taxi
Navigate to
Base
Survivability
management
Safety management
(health status, collision avoidance…)
Ingress Egress
Ressources management
(fuel, effectors, chaff, flares…)
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Taxi-T-Off
Mission Taxi T-Off
Survivability NA Procedure
Safety
Health Monitoring
Maintain Domain
Collision avoidance
ATC Compliance
Supervise Manage transitions
Manage transitions
Taxi-Take-Off example
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Taxi to runway
Get Taxiing procedure
Get Taxiway characteristics
Detect own status
position
configuration Comply with
taxiing procedure
Detect decision points
Plan
Stop
Move on taxiway
Select Plan
Execute
Taxi to runway (details) How to run the vehicle from parking to runway threshold?
Observe
Orientate
Decide
Act
Autonomy
Field
Candidate Solutions
•Planned Path
•Follow me/Convoy
•Visual steering
•Remote Control
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Taxi to runway
Get Taxiing procedure
Get Taxiway characteristics
Detect own status
position
configuration Comply with
taxiing procedure
Detect decision points
Plan
Stop
Move on taxiway
Select Plan
Execute
Taxi to runway (details) How to run the vehicle from parking to runway threshold?
Observe
Orientate
Decide
Act
Autonomy
Field
Candidate Solutions
•Planned Path
•Follow me/Convoy
•Visual steering
•Remote Control
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Autonomy derivation : Steps
Task analysis
– Analysis Grid for Task decomposition :
• Inspired by OODA loop
– Nature of tasks in an aerial combat system
• Mission, Survivability, Safety, Supervision
– Tasks analysis through mission phases
Assessment of
– Technology capability
– Targeted Role of operator
– Capability of operator
Targeted LOA
LOA : Level of Autonomy
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Synthesis
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Example
Task Feasibility Operator
requested
role
Operator
capacity
Recommendation
Target
identification
Up to LOA5
•Technology
: ATR
•Limitations
on target
types and
environmen
tal
conditions
LOA3 :
operator
must be in
the loop in
most
situations
(ROEs)
LOA1
•Image
analysis
•Duration of
task
•Latence of
information
due to
communicati
on network
LOA3 : Assisted Target
identification with possible
variation (LOA5 by
exception down to LOA1)
•Comply with requested
role of operator
•Robustness of algorithms
and varaibility of situations
doesn’t enable full
automation
•Contributes to
communications needs
LOA : Level of Autonomy
ATR : Automatic Target Recognition
ROEs : Rules of Engagement
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UCAV
? CS
Summary
Needs : System Tasks •Platform control
•Launch/Recovery
•En route
•Engagement
•Navigate •Follow flight plan
•Insert in traffic
•Engage/Re engage •DRIL
•Select target(s)
•Engage
•BDI/BDA
•Survive
•Coordinate •With leader/wingmen
•with Coop Systems
•Disseminate
•React to unplanned events
A/V Functions
CS Functions
MMI
Crew
Missions & CONOPS
Architecture
Communications
Criteria •Human Factor
•Tasks complexity
•Situation complexity
•Duration
•Response time
•Criticality •Safety
•Survivability
•Mission success
•ROEs
•Regulations
•Technical constraints •Communication
•Feasibility
•Variability of situations
•Adaptability
A/V : Air Vehicle
CS : Control Station/Segment
MMI : Man Machine Interface
ROEs : Rules of Engagement
DRIL : Detection Reconaissance Identification Localisation
BDI/BDA : Battle Damagr Indication/assessment
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Plan
Why Autonomy
Definitions related to autonomy
Autonomy considerations for UAV systems
design
Derivation process
Technology
Illustration
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TECHNOLOGY FOR AUTONOMY
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UAS Autonomy Technology capability
Autonomous system will request new technology
These technology will have to cover different functional domains; nevertheless
generic questions will have to be adressed to assess their capability with
respect to autonomy
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What questions on technologies? Capability
Probability of success (Ps) : probability that the
system will solve the problem (capability)
Probability of false alarm (Pfa) : probability that the
system will solve the problem with a wrong answer
(impact confidence)
Domain of use : Domain in which the Ps combined
with Pfa is acceptable with respect to system design
objectives
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Technology Capability for UAVs : Example
Automatic Target recognition ATR
– Basic performance is defined by the probability to recognise
a type of target/object in an image
– Level of confidence is conditionned by rate of unapropriate
recognition (« false alarm »);
– Current technology level (« TRL ») cannot guarantee an
acceptable Ps and Pfa on all targets types
– If the latest, consequence is that to be « recognised » a
consolidation is needed from a third party (e.g. the operator);
third party should have appropriate level of information in
hand (e;g; significant image for an operator)
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Key candidate technology with respect to OODA
O O
D A
TRL mentionned refer to UAV application
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System engineering Challenges raised by autonomy implemenation
System
Engineering
Specification
Design
Integration
Validation
Verification
Qualification
Challenging Properties
• Number of situations
• Design Space
• Unpredictable
• Rule Based system
• Rules validity
• Rules update
• Safety
• Airborne
• Lethal
• Predictability
• …
Key considerations for Technology choices
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Plan
Why Autonomy
Definitions related to autonomy
Autonomy considerations for UAV systems
design
Derivation process
Technology
Illustrations Maritime Surveillance
Multi vehicle autonomous aerial refuelling
Neuron (UCAV technology demonstrator)
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INFORMATION PROCESSING IN
MARITIME SURVEILLANCE
Autonomy illustration
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MARSUR
Effect of better « characterisation » of targets on
mission performance
– Decrease reaction time
– Focus investigations when appropriate and save mission
potential
Autonomy breakthrough
– Sensor association/fusion LOA3-4
– ATD/R (Automatic Target Detection/Reconnaissance) LOA3-4
– Behavioral properties (intention, anomaly) LOA3-4
– Sensors control : cueing and coordination LOA4-5
LOA : Level Of Autonomy
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MARSUR Realistic situations
www.marinetraffic.com
AIS = Automatic Identification System
AIS Plots •Merchant : Cargo, Tankers,
•Passengers/ferry ,
•Fishing ,
•Leisure (Yachts)……
Each plot contains information •Position,
•Speed,
•Pictures…
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MARSUR Illustration Investigation & Decision Process
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MARSUR Illustration Investigation Decision Process
Situation Analysis
•Coherency/anomaly
•Position
•Time
•Variations
•Behaviors
•Individual
•Groups
•Predictions
•Extrapollations
•Probability
Detections Analysis
INVESTIGATION DECISION (PATH ALTERATION, RESSOURCE ALLOCATION…)
Radar
AIS ISAR
EO/IR
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Situation Analysis example
www.iosb.fraunhofer.de
Interactive Analysis and Diagnosis
TECHNIQUES
•Bayesian Network
•Graph models
•Hidden Markov model
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MARSUR Illustration
Ships (speed)
Detection
Planned Surveillance
Pattern
Actual Path
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MARSUR Illustration
Benefit of better ID process
– Number of investigation : save mission time
available for additional surveillance capability or
enable revisit of area of high interest
– Decrease the number of operators
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MULTI UCAV OPERATION
AIR TO AIR REFUELING (AAR)
Autonomy illustation
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Definitions
RENDEZ VOUS
PATTERN EXAMPLE
REFUELING
AREAS
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AAR Standard Procedure
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AAR Simulation Development
Package of 5 UCAV
Simulated Phases – Rejoin tanker
– Enter Refuel pattern
– Execute AAR procedure (previous slide)
– Exit Refuel Pattern
– Rejoin Flight Plan
Autonomy – Basic Flying (navigation, package flight, deconfliction…):
LOA5
– State and phases transition : LOA 3
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NEURON
1ST EUROPEAN UCAV
Autonomy illustration
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NEURON
Human actors
Control modes
Movie
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NEURON main human actors (1)
Neuron operators: in charge of aerial vehicle
systems control and trajectory definition/
control in order to :
– follow the test order agreed with the flight test
engineer
– take into account safety local rules and flight line
team safety
– respect ATC controller requests and clearances
– apply procedure in case of failure (including
decision to voluntarily crash the air vehicle)
Flight line team : in charge of ground
support operations
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NEURON main human actors (2)
Test team (including the tests conductor)
…and 1st flight guests!
Ground and Test Controllers: official controllers in charge of air
traffic separation (ATC)
Safety Officer: official representative in charge of safety local rules
compliance (i.e. those concerning density of over-flown population)
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Control modes
Manual Control Supervised Control
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NEURON PROGRAMME
ISTRES In-flight tests
Development
SAINT CLOUD General Management R&D
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Thank you for your attention
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89