EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 1
Leaders in what’s now. Innovators of what’s next.
| 1
URSANAV.COM HARRIS.COM | #HARRISCORP
January 2017
URSANAV, INC. & HARRIS CORPORATION
CRADA2 Test Results
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 2
Leaders in what’s now. Innovators of what’s next.
| 2
April 19, 2016
This work is supported through a Cooperative Research and Development Agreement (CRADA) with the Department of Homeland Security (DHS) Science and Technology
Directorate (S&T) and the U.S. Coast Guard.
This document does not contain critical or sensitive information and there are no risks with the public release of the information.
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 3
Leaders in what’s now. Innovators of what’s next.
| 3
eLoran CRADA Executive Summary
Without differential corrections or augmentations, eLoran results have easily demonstrated the ability to meet the (+/-) one microsecond timing synchronization requirement proposed in the 2014 Federal Radionavigation Plan (FRP)
Without differential corrections or augmentations, eLoran results within a 500 mile range of the test transmitter location have demonstrated (+/-) 500 nanoseconds synchronization to UTC
Without differential corrections or augmentations, 95% of all data collected was within 156 Nanoseconds of UTC
Leaders in what’s now. Innovators of what’s next.
0
20
40
60
80
100
120
5 15 25 35 45 55 65 75 85 95 105 115 125 135 145 155 165 175 185
UTC
Cum
mul
ativ
e Er
ror %
UTC Error (NanoSeconds)
eLoran Vs. UTC Cummulative Error
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 4
Leaders in what’s now. Innovators of what’s next.
| 4
eLoran CRADA Executive Summary
With differential corrections applied at certain locations in the vicinity of a Differential eLoran Reference Station, eLoran demonstrated time synchronization to UTC well within 100 nanoseconds
eLoran was proven in field trials to be a successful backup to GPS timing in a Wide
Area Multilateration (WAM) aviation application, providing equivalent performance to GPS
Additional aviation testing is ongoing, with plans underway to demonstrate precise
time synchronization, Loran Data Channel (LDC) communication, and compass (heading) applications in Unmanned Aerial Vehicles and General Aviation aircraft in January 2017
eLoran in Smart Grid application Proofs-of-Concept are planned for Feb/March 2017
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 5
Leaders in what’s now. Innovators of what’s next.
| 5
Evaluate eLoran as a Wide Area Timing Source
Transmissions from former USCG Loran Support Unit site at Wildwood, NJ 360 KW Effective Radiated Power Two Way Satellite Time Transfer (TWSTT) UTC reference from the US Naval
Observatory
Receivers Bangor, ME (500 Miles) N. Billerica, MA (310 Miles) Columbus, OH (440 Miles) Washington, DC (USNO) (120 Miles) Leesburg, VA (140 Miles) Ocala, FL (790 Miles) [Note: new receiver location.]
Technology Outdoor E-Field antenna Outdoor Loop antenna Loran Data Channel (LDC) demodulation available GPS and/or 5071A Cesium Primary Reference Standard used as comparison
Criteria
Meet one microsecond 2014 FRP timing user requirement
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 6
Leaders in what’s now. Innovators of what’s next.
| 6
eLoran Timing Evaluation Technology Laydown
LSU
• eLoran transmitter at Wildwood, NJ – Synchronized to UTC via
Two Way Satellite Time Transfer (TWSTT) provided by US Naval Observatory
– 360KW of Effective Radiated Power
– Broadcasting dual rated as 8970 Master and Secondary
– LDC broadcast only on 8970 Secondary at raw data rate of 56 bps; effective rate of 21 bps
• Differential eLoran Reference sites at: – North Billerica, MA – Leesburg, VA – Gastonia, NC
(Temporary)
Wildwood, NJ to: (miles) USNO, DC: 120 Leesburg, VA: 140 N. Billerica, MA: 310 Rochester, NY 325 Gastonia, NC 425 Columbus, OH: 440 Bangor, ME: 500 Ocala, FL 790
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 7
Leaders in what’s now. Innovators of what’s next.
| 7
2014 FRP +/- one microsecond as Y-Axis
Period: December 2015 Distance to XMTR: 120 miles
Mean: 22.9 ns STD: 26.1 ns Max: 147.0 ns Min: -90.0 ns
Washington, DC
Wildwood, NJ to Washington, DC (USNO) User Receiver
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 8
Leaders in what’s now. Innovators of what’s next.
| 8
Period: April 2016 Distance to XMTR: 120 miles
Mean: 41.3 ns STD: 39.4 ns Max: 147.0 ns Min: -57.0 ns
Wildwood, NJ to Washington, DC (USNO) User Receiver
Leaders in what’s now. Innovators of what’s next.
Washington, DC
2014 FRP +/- one microsecond as Y-Axis
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 9
Leaders in what’s now. Innovators of what’s next.
| 9
Period: July – August 2016 Distance to XMTR: 120 miles
Mean: 25.9 Std : 15.0 Max : 85.0 Min : -38.0
Wildwood, NJ to Washington, DC (USNO) User Receiver
Leaders in what’s now. Innovators of what’s next.
Washington, DC
2014 FRP +/- one microsecond as Y-Axis
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 10
Leaders in what’s now. Innovators of what’s next.
| 10
2014 FRP +/- one microsecond as Y-Axis
Period: January 2016 Distance to XMTR: 140 miles
Mean: 153.6 ns STD: 79.9 ns Max: 358.0 ns Min: -16.0 ns
Leesburg, VA
Wildwood, NJ to Leesburg, VA User Receiver
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 11
Leaders in what’s now. Innovators of what’s next.
| 11
Period: April 2016 Distance to XMTR: 140 miles
Mean: -153.0 ns STD: 49.1 ns Max: -31.0 ns Min: -298.0 ns
Wildwood, NJ to Leesburg, VA User Receiver
Leaders in what’s now. Innovators of what’s next.
Leesburg, VA
2014 FRP +/- one microsecond as Y-Axis
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 12
Leaders in what’s now. Innovators of what’s next.
| 12
Period July – August 2016 Distance to XMTR: 140 miles
Mean: 33.3 Std : 23.2
Max : 287.0 Min : -25.0
Wildwood, NJ to Leesburg, VA User Receiver
Leaders in what’s now. Innovators of what’s next.
Leesburg, VA
2014 FRP +/- one microsecond as Y-Axis
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 13
Leaders in what’s now. Innovators of what’s next.
| 13
Period: October – November 2016 Distance to XMTR: 140 miles
Mean: 79.1 Std : 33.1
Max : 188.0 Min : -29.0
Wildwood, NJ to Leesburg, VA User Receiver
Leaders in what’s now. Innovators of what’s next.
Leesburg, VA
2014 FRP +/- one microsecond as Y-Axis
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 14
Leaders in what’s now. Innovators of what’s next.
| 14
Period: December 2016 Distance to XMTR: 140 miles
Mean: 32.8 Std : 56.8
Max : 228.0 Min : -127.0
Wildwood, NJ to Leesburg, VA User Receiver
Leaders in what’s now. Innovators of what’s next.
Leesburg, VA
2014 FRP +/- one microsecond as Y-Axis
Note: An equipment problem at
the Wildwood transmitter
site caused a 500 ns
timing jump relative to UTC. This
500 ns offset was factored
out of the data in this
graph.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 15
Leaders in what’s now. Innovators of what’s next.
| 15
Wildwood, NJ to North Billerica, MA with and without differential corrections
Leaders in what’s now. Innovators of what’s next.
---North Billerica, MA --- With Differential Corrections
2014 FRP +/- one microsecond as Y-Axis
Period: October – November 2016 Distance to XMTR: 310 miles
Without Differential corrections Mean: 134.1 Std : 54.6
Max : 292.0 Min : -12.0
Period: October – November 2016 Distance to XMTR: 310 miles With Differential corrections
Mean: -10.5 Std : 8.1
Max : 38.0 Min : -95.0
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 16
Leaders in what’s now. Innovators of what’s next.
| 16
Wildwood, NJ to North Billerica, MA with and without differential corrections
Leaders in what’s now. Innovators of what’s next.
---North Billerica, MA --- With Differential Corrections
2014 FRP +/- one microsecond as Y-Axis
Period: December 2016 Distance to XMTR: 310 miles
Without Differential corrections Mean: 171.7 Std : 92.8
Max : 404.0 Min : 12.0
Period: December 2016 Distance to XMTR: 310 miles With Differential corrections
Mean: -5.1 Std : 9.7
Max : 32.0 Min : -40.0
Note: An equipment problem at
the Wildwood transmitter
site caused a 500 ns
timing jump relative to UTC. This
500 ns offset was factored
out of the data in this
graph.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 17
Leaders in what’s now. Innovators of what’s next.
| 17
2014 FRP +/- one microsecond as Y-Axis
Period: April 2016 Distance to XMTR: 440 miles
Mean: 170.4 ns STD: 56.4 ns Max: 148.6 ns Min: -159.4 ns
Columbus, OH
Wildwood, NJ to Columbus, OH User Receiver
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 18
Leaders in what’s now. Innovators of what’s next.
| 18
2014 FRP +/- one microsecond as Y-Axis
Period: November 2016 Distance to XMTR: 440 miles
Mean: 93.8 Std : 74.1
Max : 361.0 Min : -109.0
Columbus, OH
Wildwood, NJ to Columbus, OH User Receiver
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 19
Leaders in what’s now. Innovators of what’s next.
| 19
Wildwood, NJ to Bangor, ME User Receiver
2014 FRP +/- one microsecond as Y-Axis
Period: December 2015 Distance to XMTR: 500 miles
Mean: 49.7 ns STD: 68.6 ns Max: 216.0 ns Min: -91.0 ns
Bangor, ME
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 20
Leaders in what’s now. Innovators of what’s next.
| 20
Wildwood, NJ to Bangor, ME User Receiver
Period: April 2016 Distance to XMTR: 500 miles
Mean: -149.1 ns STD: 69.7 ns Max: 171.0 ns Min: -318.0 ns
Leaders in what’s now. Innovators of what’s next.
2014 FRP +/- one microsecond as Y-Axis
Bangor, ME
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 21
Leaders in what’s now. Innovators of what’s next.
| 21
Wildwood, NJ to Bangor, ME User Receiver
Period: August 2016 Distance to XMTR: 500 miles
Mean: 87.6 Std : 32.9
Max : 191.0 Min : 2.0
Leaders in what’s now. Innovators of what’s next.
2014 FRP +/- one microsecond as Y-Axis
Bangor, ME
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 22
Leaders in what’s now. Innovators of what’s next.
| 22
Wildwood, NJ to Bangor, ME User Receiver
Period: December 2016 Distance to XMTR: 500 miles
Mean: -9.1 Std : 154.2 Max : 294.0 Min : -361.0
Leaders in what’s now. Innovators of what’s next.
2014 FRP +/- one microsecond as Y-Axis
Bangor, ME
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 23
Leaders in what’s now. Innovators of what’s next.
| 23
Wildwood, NJ to Ocala, FL User Receiver
Period: December 2016 Distance to XMTR: 790 miles
Mean: 93.0 Std : 114.7 Max : 536.0 Min : -448.0
Leaders in what’s now. Innovators of what’s next.
2014 FRP +/- one microsecond as Y-Axis
Ocala, FL
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 24
Leaders in what’s now. Innovators of what’s next.
| 24
Evaluate eLoran as a Wide Area Multilateration Timing Source
Transmissions from former USCG Loran Support Unit site at Wildwood, NJ 360 KW Effective Radiated Power Two Way Satellite Time Transfer (TWSTT) UTC reference from the USNO
Receivers Wide Area Multilateration testing – Gastonia, NC (Greater Charlotte area)
Technology Wide Area Multilateration (WAM) using eLoran timing Loran Data Channel (LDC) demodulation available GPS and/or Cesium 5071A PRS used as timing comparison
Criteria
Meet WAM radio timing requirements (± 30 ns @ 95%)
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 25
Leaders in what’s now. Innovators of what’s next.
| 25
Evaluate eLoran as a WAM Timing Source
Leaders in what’s now. Innovators of what’s next.
During normal operations, WAM radio stations use GPS for timing
In the event of a GPS failure: Some WAM radio stations are equipped with high precision external timing
sources (e.g., rubidium clocks, cesium clocks) Other WAM radio stations have no external timing source, but timing errors can
be compensated for by the MLAT Server using an operational “reftran” mode In reftran mode, the MLAT Server uses reference transmissions from
neighboring radio stations and reference timestamps from radio stations with external timing sources to calculate and compensate for timing drift
While use of external timing sources is very effective, high precision atomic clocks
are very expensive
eLoran timing service has been identified as an alternative to using expensive atomic clocks
eLoran receivers are an order of magnitude less costly than cesium clocks
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 26
Leaders in what’s now. Innovators of what’s next.
| 26
Harris currently provides WAM service for Air Traffic Control (ATC) in a subset of ADS-B service volumes using networks of WAM radio stations
Aircraft transmissions are received by a network of radio sites An independent determination of the aircraft position can be achieved through
WAM, given the locations of the radio sites, but relative timing among all radios must be precise (± 30 ns @ 95%) to meet position accuracy requirements
lat1, lon1, tomr1
lat4, lon4, tomr4
lat5, lon5, tomr5
lat6, lon6, tomr6
lat2, lon2, tomr2
lat3, lon3, tomr3
How WAM Works
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 27
Leaders in what’s now. Innovators of what’s next.
| 27
WAM Test Objective and Description
Leaders in what’s now. Innovators of what’s next.
Test Objective Demonstrate that eLoran timing service is sufficient to support WAM radio
station timing requirements
Test Description Harris currently provides WAM service to Air Traffic Control in the Charlotte
(CLT) Terminal area using a network of eleven (11) WAM radio stations Deploy a temporary radio station to the service area equipped with an eLoran
receiver Force the temporary site to use eLoran for timing and assess the usability of the
data to support WAM Services
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 28
Leaders in what’s now. Innovators of what’s next.
| 28
Wildwood, NJ to Gastonia, NC - WAM
Period: November 2016 Distance to XMTR: 425 miles
Without Differential corrections Mean: 127.8 Std : 52.5
Max : 283.0 Min : 35.0
Leaders in what’s now. Innovators of what’s next.
2014 FRP +/- one microsecond as Y-Axis
---Gastonia, NC --- With Differential
Corrections
Period: November 2016 Distance to XMTR: 425 miles With Differential corrections
Mean: 14.7 Std : 7.5
Max : 64.0 Min : -30.0
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 29
Leaders in what’s now. Innovators of what’s next.
| 29
11/02/2016 Performance (Day 1)
X Pos Acc (68%) Y Pos Acc (68%) X Pos Acc (95%) Y Pos Acc (95%) X Vel Acc (95%) Y Vel Acc (95%) % Prim in MLE
Operational 64.1 ft 52.1 ft 142.3 ft 103.7 ft 3.5 m/s 4.5 m/s 97.80%
Shadow (eLoran) 54.5 ft 45.8 ft 128.2 ft 98.4 ft 3.4 m/s 3.6 m/s 99.23%
Rqmt ≤ 210 ft ≤ 210 ft ≤ 420 ft ≤ 420 ft ≤ 10 m/s ≤ 10 m/s n/a
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 30
Leaders in what’s now. Innovators of what’s next.
| 30
11/03/2016 Performance (Day 2)
X Pos Acc (68%) Y Pos Acc (68%) X Pos Acc (95%) Y Pos Acc (95%) X Vel Acc (95%) Y Vel Acc (95%) % Prim in MLE
Operational 23.1 ft 71.0 ft 62.2 ft 135.3 ft 1.8 m/s 1.7 m/s 98.04%
Shadow (eLoran) 22.7 ft 63.6 ft 63.0 ft 131.5 ft 1.9 m/s 1.9 m/s 98.05%
Rqmt ≤ 210 ft ≤ 210 ft ≤ 420 ft ≤ 420 ft ≤ 10 m/s ≤ 10 m/s n/a
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 31
Leaders in what’s now. Innovators of what’s next.
| 31
11/04/2016 Performance (Day 3)
X Pos Acc (68%) Y Pos Acc (68%) X Pos Acc (95%) Y Pos Acc (95%) X Vel Acc (95%) Y Vel Acc (95%) % Prim in MLE
Operational 122.7 ft 32.0 ft 256.3 ft 92.1 ft 3.2 m/s 3.1 m/s 97.32%
Shadow (eLoran) 115.6 ft 32.2 ft 260.1 ft 93.2 ft 3.7 m/s 3.2 m/s 98.09%
Rqmt ≤ 210 ft ≤ 210 ft ≤ 420 ft ≤ 420 ft ≤ 10 m/s ≤ 10 m/s n/a
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 32
Leaders in what’s now. Innovators of what’s next.
| 32
11/05/2016 Performance (Day 4)
X Pos Acc (68%) Y Pos Acc (68%) X Pos Acc (95%) Y Pos Acc (95%) X Vel Acc (95%) Y Vel Acc (95%) % Prim in MLE
Operational 56.2 ft 72.9 ft 122.6 ft 161.7 ft 1.6 m/s 1.9 m/s 90.54%
Shadow (eLoran) 60.7 ft 72.5 ft 126.4 ft 150.6 ft 1.8 m/s 2.3 m/s 93.02%
Rqmt ≤ 210 ft ≤ 210 ft ≤ 420 ft ≤ 420 ft ≤ 10 m/s ≤ 10 m/s n/a
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 33
Leaders in what’s now. Innovators of what’s next.
| 33
The Proof-of-Concept WAM radio using Differential eLoran as the time reference performed equally as well as the WAM radios using GPS as the time reference
The Proof-of-Concept WAM radio Using Differential eLoran did not cause the
system to alarm, nor were any thresholds exceeded The MLAT Server produced accurate position solutions with eLoran more than 96
hours after loss of GPS
WAM Proof-of-Concept Conclusions
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 34
Leaders in what’s now. Innovators of what’s next.
| 34
Evaluate eLoran as an Aircraft Time and Data Source
Transmissions from former USCG Loran Support Unit site at Wildwood, NJ 360 KW Effective Radiated Power Two Way Satellite Time Transfer (TWSTT) UTC reference from the US Naval
Observatory
Receivers General Aviation Testing - Rochester, NY Unmanned Aerial Vehicle Testing – New Gretna, NJ
Technology Loran Data Channel (LDC) demodulation available GPS and/or Cesium 5071A PRS used as timing comparison
Criteria
Proof-of-Concept: Determine if eLoran might be suitable in General Aviation Aircraft and Unmanned Aerial Vehicles as a precise time source, one-way data communication source, and to provide compass (heading) information
Leaders in what’s now. Innovators of what’s next.
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 35
Leaders in what’s now. Innovators of what’s next.
| 35
Wildwood, NJ to Rochester, NY – Aviation Test
Leaders in what’s now. Innovators of what’s next.
12/13/2016: Wheels up by
11:10am, Wheels down by
12:40pm.
Both receivers (E-field and H-field) received the eLoran signal throughout the flight test
Data analysis to characterize performance is ongoing
Additional UAV
testing is planned in January
EMEA Operations Bertem, Belgium
Corporate Headquarters Chesapeake, VA
Washington DC Metro Area Leesburg, VA
Southeast Region North Charleston, SC ISO 9001
FM 540606
| 36
Leaders in what’s now. Innovators of what’s next.
| 36
eLoran is a stable, wide area source of PNT for redundancy and resiliency in multiple applications.
eLoran works in many locations where GPS is not available. eLoran works when GPS may be untrustworthy.
Without differential corrections, eLoran is capable of meeting 2014 FRP timing user requirements of +/- 1 microsecond over very wide areas.
With the application of differential corrections, eLoran is capable of providing better than +/- 100 nanoseconds timing accuracy to users of over a local area.
Contact Us for Collaborative Efforts!
UrsaNav, Inc. 85 Rangeway Road Building 3, Suite 110
North Billerica, MA 01862
+1.781.538.5299 www.ursanav.com
Contact Us for Collaborative Efforts!
Harris Corporation Critical Networks
2235 Monroe Street Herndon, VA 20171
+1.703-245-4292 www.harris.com
Summary
Leaders in what’s now. Innovators of what’s next.