Approved for Public Release, Distribution Unlimited Mr. Scott Littlefield, Program Manager DARPA...
8
Approved for Public Release, Distribution Unlimited Mr. Scott Littlefield, Program Manager DARPA Tactical Technology Office May, 2015 Briefing prepared for the ASNE Intelligent Ships Symposium Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel (ACTUV)
Approved for Public Release, Distribution Unlimited Mr. Scott Littlefield, Program Manager DARPA Tactical Technology Office May, 2015 Briefing prepared
Approved for Public Release, Distribution Unlimited Mr. Scott
Littlefield, Program Manager DARPA Tactical Technology Office May,
2015 Briefing prepared for the ASNE Intelligent Ships Symposium
Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel
(ACTUV)
Slide 2
Purpose:Key Technologies:Metrics: ACTUV Overview 2 Advanced
autonomy for highly reliable surface collision avoidance while
tracking evasive submarine target. Advanced EO/IR capability
Diverse set of ASW sensors for robust track and trail at standoff
of up to a few miles New payload technologies Build and demonstrate
an unmanned sea surface vehicle with ocean-spanning range, months
of endurance, and substantial payload Demonstrate high-level
autonomy for independent operations under sparse supervisory
control Demonstrate game-changing approach to ASW track and trail
mission Demonstrate utility for additional Navy missions Compliance
with International Maritime Organization rules for collision
avoidance at sea (COLREGS), including vessel classification
Propulsive and maneuvering overmatch v. next-generation
diesel-submarine threat; high-assurance Endurance and reliability
to complete 70+ day mission Unit production cost
Unmanned sea vehicle trade space Vehicle Size (tons) Energy
Capacity (GJ) Air-Independent Vehicle Air-Breathing Vehicle Today:
Adjunct to manned vessel. Can be launched from a combatant.
Sufficient range for local ops. Self deploying vehicles Well deck
launch? ACTUV Snorkeling vehicle? Future: Vehicle sized for
independent operations. > 10,000 nmi range at 12 knots. Energy
comparison: Air- independent line assumes 1000 Whr/kg (ONR BAA
goal). SOA for lithium ion batteries is about 200 Whr/kg. Air-
breathing line assumes 43 MJ/kg lower heating value for diesel fuel
and 30% conversion efficiency. Both assume energy store is 41% of
full-load displacement 3 Approved for Public Release, Distribution
Unlimited
Slide 4
Progress 4 Autonomy: Current COLREGS baseline is adequate to
start testing on full-scale prototype Major focus now is completion
of Integrated Craft Control System Increased emphasis on EO/IR
detection and classification Mission Systems: Baseline sensor
hardware ready for installation Alternative payloads and CONOPS are
being explored Vessel: Construction underway; expect launch late
2015 Planned delivery in 2016 for start of extended test phase
Approved for Public Release, Distribution Unlimited
Slide 5
Autonomy for collision avoidance COLREGS solution based on
geometry and target ID Key challenges for ACTUV: Comprehensive
world model that includes all surface contacts All weather and sea
conditions Wide variety of targets Robust to false contacts and
spoofing Implies diversity of sensing approaches Radar, AIS, EO/IR,
acoustic Vessel COLREGS classification Sailing, fishing, restricted
in ability to maneuver... Implies object recognition including
interpretation of lights and day shapes T&E strategy that
builds confidence; high-nines reliability Implies extensive data
collection and early at-sea integration and testing, augmented by
robust modeling and simulation. Builds on prior Navy work EO data
collection on vessel of opportunity Early integration of software
and topside sensors on surrogate vessel 5 Approved for Public
Release, Distribution Unlimited
Slide 6
Y ACTUV COLREGS Surrogate Testing Results Loiter Area Contact
Surrogate Surrogate Testing Round 2 Collision Avoided ( 1km CPA) in
All Scenarios 42 Days / 101 Individual Scenarios G1 - complied with
the rules, course/speed changes smooth and only as required with no
unnecessary movements G2 -complied with the Rules, course/speed
changes smooth and limited though maybe unnecessary with no
unnecessary movements G3 - complied with Rules, unnecessary
course/speed changes and some unnecessary movements Y - did not
comply with the Rules and/or too many course/speed changes and/or
too many unnecessary or potentially confusing movements # Test Case
Title Path Planner Grade Illustration 171Meeting BowNREC G3
271Meeting BowJPL G1 371MMeeting Bow w/ ManeuverNREC Y 471MMeeting
Bow w/ ManeuverJPL G1 571TLIMRTransit, Loiter, ManeuverNREC G3
671TLIMRTransit, Loiter, ManeuverJPL G1 732 Crossing Starboard
Perpendicular (Own-ship is give way) NREC G2 832 Crossing Starboard
Perpendicular (Own-ship is give way) JPL G2 930M Crossing Port
Perpendicular with Maneuver (Own-ship is stand-on) NREC G1 1030M
Crossing Port Perpendicular with Maneuver (Own-ship is stand-on)
JPL G1 1162 Crossing Starboard Ahead (Own-ship is give way) NREC G2
1262 Crossing Starboard Ahead (Own-ship is give way) JPL G2
1354Being OvertakenNREC G1 1454Being OvertakenJPL G1 1564Overtaking
StarboardNREC 1664Overtaking StarboardJPL INC 174 Crossing
Starboard (Own-ship is give way) NREC G3 184Crossing Starboard
(Own-ship is give way) JPL G3 Approved for Public Release,
Distribution Unlimited
Slide 7
COLREGS On-water Testing Oblique Crossing Situation 7 Approved
for Public Release, Distribution Unlimited
Slide 8
www.darpa.mil 8 Approved for Public Release, Distribution
Unlimited