an integrated future - acser-archive.unsw.edu.au · an integrated future steve hewitson ... locata...
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Locata Commercial Model
Locata
OEM
Locata Technology Integrator
(LTI)
Market Product
LocataLite Rover
Integrated reference system
for testing in a GPS contested
environment
Fleet management for mining
operations
Vehicle guidance and
automation
Locata Transceivers
White Sands Missile Range Ultra High Accuracy Reference System (UHARS)
GPS Jammed
Primary Requirements: 18cm 3D Accuracy PDOPS<3.0 30 mile (48km) Acquisition & Tracking
White Sands Missile Range 746th Test Squadron Aircraft – Rover Install
Locata Antenna
The current USAF Truth Reference For CDR trials an unmodified commercial Locata receiver was compared to this unit
White Sands Missile Range Network - Technical Demonstration
Master Tech Demo Slaves
+ 10 LocataLites for Operational Network
White Sands Missile Range Network – Master Site (NOP)
•
A LocataLite Slave site
USAF White Sands LocataNet covering approx 1,300 sq. miles
White Sands Missile Range Positioning Performance
Altitude: 25,000 ft Ground Speed: ~300 knots Duration: 30 minute Horizontal Accuracy: ~6cm Vertical Accuracy: ~15cm 3D Accuracy: ~16cm
White Sands Missile Range Transmit Site Monumentation and Hardware
J-BOX
PVC Pipe
Grid Ant.
~ 6 Feet
Shielded Cable to Locata Trailer
Concrete Pillar #2
Quadrifiler Ant. Tx #1
Met Station & Sensors
Quadrifiler Ant. Tx #2
White Sands Missile Range Mobile Transmit Hardware
Ultra-rugged, mobile, high power (10Watt Amplifiers), Continuous Operation
Scheduled for operational flight testing Q4 2014
Jassist - Positioning System
Tightly Integrated GNSS+Locata Measurements in Leica’s Core Algorithm Library (CAL). Co-located GNSS and Locata antennas. Well-aligned phase centres Multipath mitigating reception
patterns
Boddington Gold Mine Current Network
140 kms (90 miles) SE of Perth Planned Depth: 850m 4 Semi-permanent LocataLite sites 12 mobile trailers
North Pit Current Depth: 250m
South Pit Current Depth: 300m
Boddington Gold Mine JPS Performance – Accuracy vs GNSS only
Horizontal Difference Vertical Difference
Boddington Gold Mine JPS Performance - Typical availability over 1 week
North Pit – GPS only North Pit – With Locata
GNSS+Locata 99.5% Availability GNSS only 75.3% Availability
Began running 2 JPS receivers in April 2012 on 2 production drill rigs. Newmont now mandated all high-precision machines in mine must be fitted with Locata
VEHICLE RESEARCH CENTRE Insurance Institute for Highway Safety
Perrone Robotics - Vehicle Automation
Vehicle Research Centre Perrone Robotics - Autonomous Vehicle Test System (AVTS)
Primary Requirements: Highway Speeds Operational in:
Outdoors Covered test
tracks Indoor labs
Reliable and repeatable execution of test manoeuvres.
Accuracy: <5cm
Multipath Antenna Gain Patterns and Beamforming
Delay [chips]
Norm
alis
ed M
agn
itu
de
-1.0 -0.5 0.0 +0.5 +1.0 +1.5
1.0
0.0
0.5
Constructive
Multipath Constructive Multipath Signal
Composite Correlation Signal
LOS Signal
𝜏0
𝜏1
𝜏
𝜏𝑁
Multipath Antenna Gain Patterns and Beamforming
Delay [chips]
Norm
alis
ed M
agn
itu
de
-1.0 -0.5 0.0 +0.5 +1.0 +1.5
1.0
0.0
0.5
𝜏0 𝜏1
Constructive
Multipath Constructive Multipath Signal
Composite Correlation Signal
LOS Signal
𝜏
𝜏𝑁
Correlator Beamforming for GPS Receivers AFIT - Cooperative Research and Development Agreement
Existing CRPA Antenna GPS VRay Antenna
Multiple Radios