ursanav, inc. 616 innovation drive chesapeake, virginia 23320 1 joint navigation conference,...
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UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 1
Joint Navigation Conference, Orlando, 2009
Integrating Evolving Military GPS Receiver Technology and
Enhanced Loran with New and Legacy Shipboard Systems
William R. Woodward, P. E., UrsaNavRichard Webb, UrsaNav
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 2
Joint Navigation Conference, Orlando, 2009
Presentation ObjectiveIntroduce the audience to the efforts within UrsaNav to develop a scalable Position, Navigation, and Timing (PNT) gateway that can:
– Interface with existing and future GPS receivers.– Interface with existing and future eLORAN receivers.– Interface with existing and future navigation and weapon
systems.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 3
Joint Navigation Conference, Orlando, 2009
Introduction•GPS receiver and antenna technology is continually advancing.
•GPS receivers are getting smaller, requiring less power, and tracking more satellites.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 4
Joint Navigation Conference, Orlando, 2009
Introduction•GPS receivers are available with digital interfaces to support multi-beam anti-jam antennas.
•Today’s GPS receivers and antennas provide superior jamming immunity over legacy GPS receivers and antennas.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 5
Joint Navigation Conference, Orlando, 2009
Introduction•Today manufacturers of military GPS receivers typically offer multiple form factors with a variety of interfaces.
•They may all feature common interfaces such as RS-422 or RS-232.
•However, interface protocols and data message formats vary from GPS receiver to GPS receiver.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 6
Joint Navigation Conference, Orlando, 2009
Introduction•A typical military GPS receiver will support one or more Interface Control Document (ICD).
•The ICD identifies and defines the interface protocol and associated data message formats for the GPS receiver.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 7
Joint Navigation Conference, Orlando, 2009
Introduction•While military GPS receiver and antenna technology continue to advance, many legacy shipboard Position, Navigation, and Timing (PNT) interfaces have remained unchanged for decades and may remain unchanged for decades to come.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 8
Joint Navigation Conference, Orlando, 2009
Introduction•Most shipboard navigation and weapon system interfaces are unique to the shipboard environment and are not found on any current military GPS receiver.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 9
Joint Navigation Conference, Orlando, 2009
Background•The AN/WRN-6 Satellite Signals Navigation Set serves as the primary source for PNT information on more than 230 U.S. Navy, USCG, and Military Sealift Command (MSC) platforms.
•The AN/WRN-7, an unclassified version of the WRN-6, is the primary source for PNT information on approximately 250 foreign military ally ships.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 10
Joint Navigation Conference, Orlando, 2009
Background• The AN/WRN-6 and AN/WRN-7 supply data to the navigation or weapons system via the dual MIL-STD-1397 Naval Tactical Data System (NTDS) Type A or Type B interfaces.
•These interfaces are not available in any other military GPS receiver.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 11
Joint Navigation Conference, Orlando, 2009
Background•The radio receiver features additional interfaces:
• Synchro interface for roll, pitch, heading, and speed input
• Precise Time and Time Interval (PTTI) interface• HAVEQUICK interface• ICD-GPS-150 instrumentation port
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 12
Joint Navigation Conference, Orlando, 2009
Radio Receiver
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 13
Joint Navigation Conference, Orlando, 2009
Indicator Control
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 14
Joint Navigation Conference, Orlando, 2009
NTDS Connectors
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 15
Joint Navigation Conference, Orlando, 2009
Background•The Navigation Sensor System Interface (NAVSSI) suite is the primary source for PNT information on major combatants, including 122 U.S. Navy surface platforms and several allied Aegis platforms.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 16
Joint Navigation Conference, Orlando, 2009
Background•NAVSSI will not accept new GPS receiver technology without the development of a VME circuit card to replace the GPS VME Receiver Card (GVRC) currently used.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 17
Joint Navigation Conference, Orlando, 2009
Background•The Maritime Embedded Global Positioning System Adapter (MEGA) is in development to replace the GVRC.
•It only supports the SAASM compliant GPS Receiver Application Module (GRAM) receiver in a modified Standard Electronic Module type “E” (SEM-E) form factor.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 18
Joint Navigation Conference, Orlando, 2009
NAVSSI Suite
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 19
Joint Navigation Conference, Orlando, 2009
Scenario•The AN/WRN-6, AN/WRN-7, and the GVRC are obsolete.
•The AN/WRN-6 and GVRC do not meet some of the newer requirements for a GPS provider.
•They are not SAASM compliant.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 20
Joint Navigation Conference, Orlando, 2009
Scenario•MEGA, will offer NAVSSI SAASM compliance as it is currently defined.
•Future upgrades to MEGA will depend on how long the SEM-E form factor airborne GPS receiver is supported with the current ICD that MEGA accepts.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 21
Joint Navigation Conference, Orlando, 2009
Scenario•The U.S. Navy should have the capability to rapidly upgrade to the latest GPS technology at a minimum cost with no impact to existing shipboard systems.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 22
Joint Navigation Conference, Orlando, 2009
Scenario•The U.S. Navy and foreign military ally ships need a scalable PNT gateway that can interface with current and future GPS receivers, and existing and future navigation and weapon systems.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 23
Joint Navigation Conference, Orlando, 2009
Scenario•To minimize installation time and costs, this PNT gateway must accept existing shipboard cabling and mounts.
•In the case of NAVSSI, the PNT gateway could mount in a NAVSSI rack and interface with NAVSSI via a VME adapter circuit card.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 24
Joint Navigation Conference, Orlando, 2009
Solution•UrsaNav is developing a scalable PNT gateway that can interface with current and future GPS receivers, and with existing and future navigation and weapon systems.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 25
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ is based on the current production UN-100™.•It will work across all U.S. Navy, and other service, platforms currently using the WRN-6 and foreign military allies currently using the WRN-7.•It can be configured to be the PNT source for NAVSSI.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 26
Joint Navigation Conference, Orlando, 2009
UN-100™
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 27
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ will accept multiple form factor GPS receivers such as the:
– GB-GRAM– SEM-E form factor airborne GPS receiver– Hand-held receiver such as the DAGR– Commercial GPS receiver
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 28
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ will interface the selected GPS receiver to existing and future navigation and weapon systems without requiring software or hardware changes to any of the existing shipboard systems.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 29
Joint Navigation Conference, Orlando, 2009
Solution•As GPS receiver technology evolves, and their ICDs change, only the UN-106™ will need to be updated.•Legacy shipboard systems will interface with the UN-106™ as if it was a WRN-6 or WRN-7.•NAVSSI will interface with the UN-106™ just as it interfaces with the GVRC and MEGA.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 30
Joint Navigation Conference, Orlando, 2009
Solution•The IP-1747/WSN Enhanced Control Display Unit (ECDU) installed on SSN 688 and SSN 21 Class submarines will interface with the UN-106™, just as NAVSSI does.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 31
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ mounts in AN/WRN-6 original location and accepts existing shipboard connectors and cables.•The UN-106™ is lighter and uses less power then the AN/WRN-6.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 32
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ can be made smaller, but pigtails will be required to connect to existing shipboard cables.•Pigtails increase installation time, costs, and are another point of failure that decreases the overall reliability of the system.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 33
Joint Navigation Conference, Orlando, 2009
Solution•The receptacles on the back of the UN-106™ are in the same location as they are on the WRN-6.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 34
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ is scalable.
•I/O modules can be installed or removed as required.
•Costs are held to a minimum because:– Only the modules required to support the
interfaces for that ship need be installed.– Additional interfaces can be installed on site in a
short period of time.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 35
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ will accept inputs from multiple GPS receivers in different form factors.
•Receivers can be internal or external to the UN-106™.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 36
Joint Navigation Conference, Orlando, 2009
Solution•Multiple GPS receivers offer several advantages over a single GPS receiver.
•They provide graceful performance degradation and the ability to detect and isolate a failed or poorly performing receiver.
•A failed internal receiver could be temporarily replaced with a hand-held receiver, such as the DAGR.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 37
Joint Navigation Conference, Orlando, 2009
Solution•For FMS platforms, the export of current SAASM GPS receivers or future M-Code GPS receivers to some foreign military allies may be restricted.•These countries may be allowed to use the Precision Lightweight GPS Receiver (PLGR).
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 38
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ will accept external GPS receivers with interfaces such as ICD-GPS-150, ICD-GPS-153, and NMEA 0183/2000.•If a foreign military ally is not allowed to use a military GPS receiver, a commercial GPS receiver can be substituted.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 39
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ can interface with other PNT technology besides GPS.•Enhanced Loran, or eLoran, is an internationally recognized PNT and Data (PNT&D) service independent of GPS.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 40
Joint Navigation Conference, Orlando, 2009
Solution•The United States Department of Homeland Security has designated eLoran as a national system that will:
– Complement the GPS in the event of an outage or disruption in service
– Mitigate any safety, security, or economic effect of a GPS outage or disruption.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 41
Joint Navigation Conference, Orlando, 2009
Solution•eLoran is a modernization of the land-based Loran-C system and by its very nature operates independently of GNSS.
•eLoran provides similar continuous PNT services as GNSS but at different levels.
•eLoran can provide a cross-modal radionavigation system backup or complement to GPS.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 42
Joint Navigation Conference, Orlando, 2009
Solution•Recent tests have indicated that eLoran meets or exceeds the accuracy, availability, integrity, continuity, and coverage requirements necessary to achieve 8-20 meter maritime Harbor Entrance Approach (HEA) and aviation RNP 0.3 nm Non-Precision Approach (NPA) levels of performance.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 43
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ will interface with eLoran receivers such as
– Symmetricom’s Enhanced Loran Research Receiver
– Reelektronika’s Integrated LORADD eLoran/GPS receiver
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 44
Joint Navigation Conference, Orlando, 2009
Solution•eLoran can provide PNT information when GPS, or other satellite PNT services, are denied, interrupted, or disrupted.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 45
Joint Navigation Conference, Orlando, 2009
eLoran Monitor Receiver
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 46
Joint Navigation Conference, Orlando, 2009
Integrated eLoran/GPS Receiver
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 47
Joint Navigation Conference, Orlando, 2009
Solution•The UN-106™ accepts multiple PNT inputs, real time position information from the navigation system, and speed information from the ship’s log.
•The UN-106™ can evaluate the accuracy of its inputs, detect errors, and alert the operator with a descriptive message.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 48
Joint Navigation Conference, Orlando, 2009
Solution•The alert range can be set to alert for position differences between a PNT source and the navigation system and position differences between PNT sources.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 49
Joint Navigation Conference, Orlando, 2009
Solution•This approach to interfacing state-of-the-art SAASM GPS performance with shipboard navigation and combat/weapons systems has been proven onboard several vessels, including the Hellenic Navy’s Kalypso and Evniki.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 50
Joint Navigation Conference, Orlando, 2009
SolutionFunctional Diagram as Installed Onboard HN Kalypso and
HN Evniki
RemoteRemote
DAGR GPS SAASM receiver
Commercial DGPS receiver
Military GPS antenna
Commercial DGPS antenna
UN-100™
Navigation System/Combat System:AN/SYQ-13
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 51
Joint Navigation Conference, Orlando, 2009
Conclusion•GPS receiver technology will continue to advance rapidly and with the UN-106™ PNT gateway, the United States and its allies will be able to quickly interface state-of-the-art GPS and eLoran receivers with legacy and future navigation and weapons systems.
UrsaNav, Inc.616 Innovation Drive
Chesapeake, Virginia 23320www.ursanav.com 52
Joint Navigation Conference, Orlando, 2009