S a t e l l i t e T i m e a n d L o c a t i o n. N o v e m b e r John Fischer VP Advanced R&D
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1 STL - S a t e l l i t e T i m e a n d L o c a t i o n N o v e m b e r John Fischer VP Advanced R&D jfischer@orolia.com 11/28/
2 WHY AUGMENT GNSS? Recent UK Study Economic Input to UK of a disruption to GNSS 5 days without GNSS => 5B m/uploads/attachment_data/file/619544/ _Economic_impact_to_UK_of_a_disruption _to_gnss_-_full_report.pdf 11/28/2017
3 WHY AUGMENT GNSS? Alleged Spoofing Attack in the Black Sea June 22, 2017 From the Resilient Navigation and Timing Foundation A maritime incident has been reported in the Black Sea in the vicinity of position N, E on June 22, 2017 at 0710 GMT. This incident has not been confirmed. The nature of the incident is reported as GPS interference. Exercise caution when transiting this area. GPS equipment unable to obtain GPS signal intermittently since nearing coast of Novorossiysk, Russia. Now displays HDOP 0.8 accuracy within 100m, but given location is actually 25 nautical miles off; GPS display 11/28/2017 3
4 OROLIA AND SATELLES STRATEGIC PARTNERSHIP Fortifies Orolia's Resilient Positioning, Navigation and Timing Solutions with Innovative Satelles Satellite Time and Location Signal Technology December 2016 Press Release Orolia, the global leader in Resilient Positioning, Navigation and Timing (PNT) solutions, has formed a strategic alliance with Satelles, Inc. to develop, market and sell PNT solutions based on Satelles Satellite Time and Location (STL) signal technology. STL is a unique space-based PNT technology that provides location and timing data independent from traditional GPS and other GNSS satellite signals. By using STL, Orolia s proven Spectracom and McMurdo branded solutions will be less susceptible to vulnerabilities spoofing, interference and jamming associated with GPS/GNSS. 11/28/2017 4
5 STL SATELLITE TIME AND LOCATION SIGNAL from New signal available today Broadcast on the Iridium sats >30 db stronger than GPS Higher jamming and interference resistance Operates indoors Encrypted signal Inherently anti-spoof Subscription based service Available for civilian use 11/28/2017 5
6 from LEO Low Earth Orbit STL GPS MEO Medium Earth Orbit 66 Iridium Satellites Global coverage 500 mile altitude 1000x stronger than GPS 24 GPS Satellites Global coverage 12,500 mile altitude 25x further away 11/28/2017 6
7 SIGNAL COMPARISON TO GPS GNSS Timing accuracy to UTC ~20 ns ~200 ns STL Positioning accuracy ~3 meters meters Time To First Fix ~100 seconds Few seconds for 500 km ~10 minutes to converge Anti-Spoof GPS: only for military use Galileo: PRS future Yes, encrypted signal Anti-Jam Weak signal easily jammed Yes: db stronger Coverage Global Precision degrades at poles GLONASS better at high Lat Global Coverage increases at poles 4 11/28/2017 7
8 STL SIGNAL - HOW IT WORKS Re-purposed paging channels 1620 MHz band, 25 KHz BW, QPSK Spread Spectrum coded signal, 90 msec frame, ~1.4 sec burst on average UTC synchronized timing +/- 500 nsec spec nsec typical Updates to a precision local oscillator for continuous time and frequency Positioning meters Range and high Doppler from 2-3 fast moving satellites over time Spot beam for initial location Updates to IMU for slow vehicles 11/28/2017 8
9 DEMONSTRATED CAPABILITY Timing accuracy demonstration in over 30 locations worldwide 11/28/2017 9
10 POSITIONING CONSIDERATIONS STL operates differently than GPS LEO vs. MEO orbits STL sees 1-3 satellites at a time GPS sees 8-12 satellites Instantaneous TTFF ~500km on first packet from spot beam Position Dilution of Precision [PDOP] Positioning requires at least 4 (x, y, z, t) Needs at least one satellite in each direction Too few for triangulation, wrong geometry PDOP improves over time Position determined over many minutes as satellites move across the sky STL minute orbit ~30 minutes horizon to horizon GNSS 12 hour orbits 11/28/
11 POSITIONING DETERMINATION FROM STL Augmenting an INS [Inertial Navigation System] Track range/doppler from each satellite Range/Doppler updates reduce INS drift Fast moving satellites => Rapidly changing geometry High Doppler rates for more resolution Works well for stationary or slow moving vehicles Can be combined with radar, AIS, other updates Polar orbits North-South Increased coverage for emerging Artic navigation 11/28/
12 SINGLE GNSS + STL RECEIVER AND ANTENNA STL occupies a very narrow channel slightly above L1 band GNSS channels are 2 10 MHz STL is 25 KHz (~100x more narrow) STL Easy to make a single common antenna Close in frequency Simple common hemispherical antennas already exist today Possible with other CRPA antennas too Controlled Radiation Pattern Antennas (CRPA) issues Different dynamic range (30 db) Different orbital patterns (separate computations) 11/28/
13 CYBERSECURITY AND STL Geo-location as an additional authentication factor Irrefutable proof that one was at a specific point on earth at a specific time Trusted Position and Time Provides security for: Communications Position reporting Remote login System upgrades 11/28/
14 MARITIME APPLICATIONS Resilient Navigation Protection Device GNSS Spoofing and Jamming Detection Back-up Navigation in GNSS Denial Integrity Checking ECDIS Interface -- Bridge Integration Anti-piracy and attack Geo-location Cybersecurity with STL Use Cases AIS Position Verification Secure Comm Authentication Harbor protection Container Tracking 1Ms in transit Authenticated Geo Location for Security 11/28/
15 RESILIENT NAVIGATION PROTECTION DEVICE BLOCK DIAGRAM Input for comparison to backup navigation monitors GNSS signals for jamming or spoofing and sends alerts Mag compass, Optical Bearing, etc Optional module for Crowd-Sourced Navigation Optional module for Track Correlation Navaid Ship Nav Interface Other Sensors AIS Processing Radar Processing STL Receiver GNSS Receiver Navigation Processing Precision Osc Precision IMU Broad Shield SW ECDIS Interface Internal references Very difficult to jam or spoof sends display alerts to pilot on any navigation discrepancies 11/28/
16 RESILIENT PNT Time and Position Integrity Augment GNSS with an independent stronger signal anti-jam Anti-spoof with subscriber authentication of encrypted signal Trusted Location CyberSecurity based on geo-location authentication Available today from Orolia Leader in Resilient PNT Leader in Maritime Distress Systems In partnership with Satelles 8 11/28/
17 John Fischer Thank you! 11/28/
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