Author: Tracy Cozzens

  • DARPA-funded inertial sensors from Honeywell promise greater accuracy

    DARPA-funded inertial sensors from Honeywell promise greater accuracy

    Findings show accuracy of new sensors is improved by greater than an order of magnitude over current offerings.

    Honeywell, with funding from the U.S. Defense Advanced Research Projects Agency (DARPA), is creating the next generation of inertial sensor technology that will one day be used in both commercial and defense navigation applications.

    The HG1930 IMU. (Photo: Honeywell)
    The HG1930 IMU. (Photo: Honeywell)

    Findings gathered in Honeywell labs have shown the new sensors to be greater than an order of magnitude more accurate than Honeywell’s HG1930 inertial measurement unit (IMU) product, a tactical-grade product with more than 150,000 units currently in use.

    An IMU uses gyroscopes, accelerometers and electronics to give precise rotation and acceleration data to enable a vehicle system to calculate where it is, what direction it is going and at what speed, even when GPS signals aren’t available.

    There are various types of IMUs on the market, and some — like the next-generation version currently under development — use sensors based on micro-electromechanical systems (MEMS) technology to precisely measure motion.

    “Typically, MEMS inertial sensors have been on the lower end of the performance scale, but this latest milestone shows we are changing that paradigm,” said Jenni Strabley, director of offering management for Inertial Sensors, Honeywell Aerospace. “With this next-generation MEMS technology, we’re increasing performance without having to significantly change the size or weight of the IMU. This is a game-changer for the navigation industry, where customers need highly accurate solutions but cannot afford to compromise on weight or size.”

    Over the past few years, Honeywell has been working with DARPA to develop the next generation of high-precision navigation-grade IMU technology, under the Precise Robust Inertial Guidance for Munitions: Thermally Stabilized Inertial Guidance for Munitions program.

    The new MEMS sensors will use different sensor designs and electronics to enable higher performance. They will serve a broad range of applications in autonomous land and air vehicles for both military and commercial customers, including future urban air mobility aircraft.

    “Now that we have demonstrated that MEMS is capable of reaching these incredibly precise performance levels, it is the perfect time to start talking with potential users about how this technology could help their applications,” Strabley said. “We believe this new technology will have a variety of applications, such as onboard future vehicles that will fly in urban environments where lightweight, extremely precise navigation is critical to safer operations. Additionally, there are other applications that haven’t been invented yet but may be enabled by these types of technology innovations.”

    Commercial sales of an IMU containing these next-generation sensors are still several years away, but one of the first products using this new technology is expected to be more than 50 times more accurate while roughly the same size as Honeywell’s IMU.

    Honeywell has long been a pioneer in MEMS-based IMUs, including the HG1930. Honeywell’s lineage in navigation dates to the 1920s and since then Honeywell has developed and manufactured high-performance navigation solutions found on many aircraft and other vehicles worldwide.

  • Harxon introduces TS112 family for agricultural machine autosteering

    Harxon introduces TS112 family for agricultural machine autosteering

    Harxon TS112 smart antenna family. (Photo: Harxon)
    Harxon TS112 smart antenna family. (Photo: Harxon)

    Harxon has introduced its TS112 family of smart antennas for demanding applications such as agricultural machine autosteering systems that require high positioning-accuracy. Harxon made the introduction in a virtual meeting on Jan. 13 from Shenzhen.

    The TS112 family features Harxon’s latest GNSS positioning technology and offers scalable positioning solutions with increased GNSS availability, reliability and accuracy.

    Each of the three models embed Harxon X-Survey four-in-one technology. The high-gain and wide beamwidth multi-constellation GNSS antenna integrates 4G, Bluetooth and Wi-Fi in one compact unit. They feature multi-point feeding technology, ensuring high phase-center stability and real-time kinematic (RTK) centimeter-level positioning accuracy.

    TS112 Smart Antenna Family Specifications. (Chart: Harxon)
    TS112 Smart Antenna Family Specifications. (Chart: Harxon)

    The TS112SE, as the most affordable solution of the three, provides flexible positioning solutions via standalone positioning or dual-frequency precise point positioning (PPP) with accuracy from sub-meter to centimeter level while using Sapcorda’s SAPA (Safe and Precise Augmentation Service). Its comprehensive support and L-band augmentation service ensure solid satellite tracking without signal outage even in difficult terrains or problematic environmental conditions.

    SAPA works as a reliable alternative economical positioning option with wide service coverage in the application environment that has poor LTE network coverage.

    The TS112 integrates a high-precision GNSS module with multi-band GNSS receiver and Harxon’s four-in-one multifunctional GNSS antenna in a compact housing. It supports dual-frequency multi-constellations for consistent and robust satellite signal tracking and delivers RTK-level positioning accuracy for precision agriculture equipment and machine control. It offers a 4G and UHF radio modem for flexible correction transmission as well as wireless Bluetooth technology for easy connectivity in the field.

    The TS112 PRO employs a future-ready Hexagon OEM GNSS module, offering precise positioning and advanced interference mitigation for space constrained applications and challenging environments.

    With centimeter-level positioning utilizing TerraStar satellite-delivered correction services, Harxon’s TS112 PRO ensures globally available, high performance positioning without the need for network infrastructure. Harxon’s TS112 PRO also support NTRIP service, so in application environments where using a base station is not feasible, the NTRIP differential corrections could be transmitted to a rover using 4G networks and enable users reaching ultimate centimeter level positioning accuracy.

    The TS112 PRO also features Hexagon’s Glide smooth positioning that offers superior pass-to-pass accuracy down to 20 centimeters for applications where relative positioning is critical.

    All models in the TS112 family support Harxon Slide technology to provide smooth positioning and exceptional linear accuracy so that the guiding system can continue to guide during satellite signal outages or in challenging environments.

    The newly released family also support Harxon terrain compensation algorithm that is capable of correcting deviations that caused by vehicle’s roll and pitch while working on uneven grounds or slopes. It helps users increase operational efficiency and saving cost in the field.

    Adopting ruggedized and IP67 standard housing, the TS112 family equip NMEA0183 and NMEA2000 CAN ports, RS-232 serial ports for easy connectivity.

  • Trimble smart antennas ready for tough environments

    Trimble smart antennas ready for tough environments

    Photo: Trimble
    Photo: Trimble

    Trimble has introduced the Trimble AX940 and AX940i high-precision GNSS smart antennas, designed for a broad range of high-precision applications such as precision agriculture, milling machines in construction, forestry harvesting equipment, autonomous vehicles, port automation and mobile mapping.

    With multi-frequency, multi-constellation support for GPS, Galileo, GLONASS, BeiDou, QZSS and NavIC, the smart antennas can deliver reliable centimeter-level accuracy in a variety of environments. In addition, the Trimble AX940 and AX940i provide reliable, high-accuracy positioning without the constraints of a local base station or cell modem by using Trimble RTX correction services.

    Built-in inertial sensors on the AX940i allow a tight integration with GNSS observations in the RTK/RTX positioning and orientation engine, providing continuous high-rate low-latency output to guidance and control systems.

    “The new AX family of smart antennas delivers the latest GNSS and inertial technology in an easy-to-integrate and rugged form factor,” said Thomas Utzmeier, general manager for Trimble OEM GNSS. “Reliable, robust and compact, the smart antennas are an ideal option for OEMs and system integrators to easily and quickly add high-accuracy positioning to their applications.”

    The Trimble AX940 and AX940i provide flexible interfaces with high-speed data transfer and configuration; simplified integrations reduce development times; and an intuitive 3D graphical web page allows easy input of the lever arm for easier set up.

    The full-featured smart antennas are equipped with 336 channels for multi-constellation support; Trimble RTX and OmniSTAR support; flexible RS232, USB, CAN and Ethernet interfaces; and advanced RF spectrum monitoring. The AX940i also includes Wi-Fi and Bluetooth connectivity for wireless interface and control.

    Using the latest Trimble Maxwell 7 Technology, the AX940 and AX940i are designed with flexible signal management that enables the use of all available GNSS constellations and signals.

    The Trimble AX940 and AX940i smart antennas are expected to be available in the first quarter of 2021 through Trimble’s OEM GNSS Sales Channel.

  • DOT report: L-band, UHF, LF and fiber PNT needed to protect US

    DOT report: L-band, UHF, LF and fiber PNT needed to protect US

    In a report issued on Jan. 14, the Department of Transportation (DOT) outlined the results of its GPS Backup Technology Demonstration project. As officials had previously projected, it called for a system-of-systems approach using multiple complementary technologies.

    The report called for an architecture that included signals from space in the L-band, terrestrial broadcasts in the ultra high frequency (UHF) and low frequency (LF) spectra, and a fiber backbone to synchronize and feed precise time to terrestrial transmitters.

    The demonstration project and report were mandated by Congress in legislation passed in late 2017 and funded in early 2018. Delays within the administration resulted in the project beginning in early 2019.

    Monty Johnson of OPNT demonstrates precise time transfer through 100 kilometers of spooled fiber-optic cable. (Photo: RNT Foundation)
    Monty Johnson of OPNT demonstrates precise time transfer through 100 kilometers of spooled fiber-optic cable. (Photo: RNT Foundation)

    Demonstrations

    Of 21 firms that offered to demonstrate their wares, 11 were selected. They were:

    • Echo Ridge LLC and Satelles Inc. Satellite-based PNT technologies using the S and L bands, respectively.
    • OPNT B.V. and Seven Solutions S.L. Fiber-optic time transfer using the White Rabbit Precision Time Protocol technology.
    • TRX Systems Inc. Dead reckoning technology with inertial measurement units and localized map matching supplemented with ultra-wideband beacons.
    • Hellen Systems LLC and UrsaNav. eLoran that uses LF transmissions.
    • Serco Inc. Medium frequency R-mode.
    • NextNav LLC. Metropolitan beacon system using UHF frequencies.
    • PhasorLab Inc. and Skyhook Wireless Inc. Both use Wi-Fi frequencies. Phasorlab uses a dedicated network of transmitters. Skyhook leverages existing Wi-Fi access points.

    Five of the demonstrations were conducted at Joint Base Cape Cod, with the remainder at NASA’s Langley Research Center in Virginia.

    Timing demonstrations were assessed for system:

    • coverage (service availability) within an “appropriate area” (wireless systems only)
    • accuracy and stability across an appropriate area
    • long-term accuracy and stability of time transfer to a fixed location
    • time transfer availability and accuracy to a fixed location under challenged GPS signal conditions.

    Positioning was evaluated for:

    • coverage within a defined region
    • 2D and 3D dynamic positioning service availability and accuracy
    • availability and accuracy of static positioning
    • long-term availability and accuracy of static positioning
    • long-term availability and accuracy of static positioning under challenged GPS signal conditions

    DHS work referenced

    The report also mentions an earlier set of demonstrations done by the Department of Homeland Security (DHS).

    In December 2018, DHS’s Science and Technology Directorate performed the work through the Homeland Security Systems Engineering and Development Institute. The project “demonstrated a combination of position and timing use cases for dynamic vs. static and indoor vs. outdoor applications, along with a time-transfer use case for critical infrastructure applications.” Systems from Locata Corp, NextNav, and Satelles were evaluated.

    The DoT report says that eLoran was not part of the DHS effort because of the lack of transmitters in the area. However, “DHS had previously studied eLoran performance under a Cooperative Research and Development Agreement (CRADA) with Harris Corporation and UrsaNav and had an understanding of its capabilities.”

    A report of DHS’ December 2018 work is not publicly available, though DOT says it was used to inform their efforts.

    The only publicly available information from DHS about the eLoran CRADA seems to be a 2016 press release. A presentation and other information  is available on the UrsaNav website.

    Findings

    The 437-page DOT report is filled to the brim with detailed information about the project, individual technologies, and demonstration results.

    The Executive Summary says that, in addition to the findings from the DHS December 2018 effort (which were not listed), the DOT demonstration had four key findings:

    1. All TRL-qualified vendors offered showed PNT “performance of value” and one showed value in all scenarios.
    2. Neither eLoran company succeeded in the Static Basement Timing scenario.
    3. R-mode ranging did not meet the minimum technical readiness level (TRL) of 6.
    4. Deployment effort and coverage (infrastructure per unit area) are significant cost factors.

    Addressing the needs of critical infrastructure owners and operators, the report concluded the needed “technologies are LF and UHF terrestrial and L-band satellite broadcasts for PNT functions with supporting fiber optic time services to transmitters/control segments.”

    Reactions and way forward

    Government officials and industry observers alike have welcomed the report, though it does leave some questions on the table.

    One is about other national PNT needs. The congressional tasking was to report on GPS backup technologies for critical infrastructure and national security. The Jan. 14 report focuses on critical infrastructure needs. Information on national security requirements, some of which is classified, was provided to Congress separately by DHS and the Department of Defense.

    “Economic and homeland security are sometimes considered by agencies and Congress as subsets of national security, sometimes not,” according to one analyst. “So, we don’t know if the needs of first responders, delivery services, civil government agencies, and other essential users were ever formally considered. The good news is that the combination of systems identified, if implemented and made available to all, would likely meet the needs of most.”

    Other open issues are about implementing the report’s recommendations.

    Some have been quick to point out that the demonstrations were to inform the government, not part of a procurement.

    “If this was for an acquisition, it would have been done differently,” said one government retiree.  “Rather than having vendors set up and operate the equipment, government evaluators would have been much more hands on. And they would have made every effort to do all the trials at the same location.”

    Going forward, cost will also an important factor, as mentioned in the report’s key findings. “Depending on who you want to serve and where, the costs of different technologies vary by orders of magnitude,” said one provider.

    Reaction from those involved with the demonstration project has been generally upbeat with praise for DOT’s effort and anticipation of more progress.

    Typical were comments from Ganesh Pattabiraman, CEO at NextNav, who appreciated the real-world scenarios DOT used in the project. Regarding next steps he said, “We look forward to working with Congress on implementing the report’s recommendations.”

  • NASA advancing GNSS capabilities for spacecraft

    NASA advancing GNSS capabilities for spacecraft

    NASA’s Space Communications and Navigation (SCaN) program is developing capabilities that will allow missions at high altitudes to take advantage of GNSS signals for timing and navigation, including the Artemis missions to the Moon.

    Interoperability of the GNSS constellations will be key for spacecraft at higher altitudes where GNSS signals are less plentiful. The program will rely on the four global constellations (GPS, Galileo, GLONASS and BeiDou) and the two regional systems operated by India and Japan.

    SCaN is supporting flight experiments that will help develop multi-GNSS capabilities for spacecraft, such as Bobcat-1, developed by NASA’s Glenn Research Center in Cleveland and Ohio University.

    Bobcat on the Prowl

    Bobcat-1, shown with its deployable antenna stowed, will experiment with the GNSS inter-constellation time offset from low-Earth orbit. (Photo: NASA)
    Bobcat-1, shown with its deployable antenna stowed, will experiment with the GNSS inter-constellation time offset from low-Earth orbit. (Photo: NASA)

    Bobcat-1 was selected by the CubeSat Launch Initiative in 2018 to study GNSS signals from 250 miles overhead. The small satellite launched to the International Space Station aboard a Northrop Grumman Cygnus spacecraft on Oct. 2, 2020.

    On Nov. 5, the space station released the CubeSat to begin its mission. The spacecraft will orbit for about nine months, measuring signals from different GNSS constellations. Engineers will use these measurements to better understand GNSS performance, specifically focusing on timekeeping variations between the constellations.

    “GNSS users at high altitudes see fewer satellites,” said Bobcat Co-Principal Investigator Frank Van Grass of Ohio University. “Time offsets between the constellations can be measured by the CubeSat and provided to these users to improve their positioning performance,”

    SCaN Testbed

    Bobcat-1 builds on the legacy of the SCaN Testbed, which demonstrated multi-GNSS capabilities on the space station from 2012 to 2019. The GPS and Galileo Receiver for the International Space Station (GARISS) — an instrument developed in collaboration between NASA and ESA (European Space Agency) — received signals from both GPS and Galileo, the GNSS constellation operated by the European Union.

    The SCaN Testbed prior to launch to the International Space Station. (Photo: NASA)
    The SCaN Testbed prior to launch to the International Space Station. (Photo: NASA)

    The SCaN TestBed also laid the foundation for the Lunar GNSS Receiver Experiment (LuGRE), a Commercial Lunar Payload Services payload being developed in partnership with the Italian Space Agency. The payload will receive signals from both GPS and Galileo and is expected to obtain the first-ever GNSS fix on the lunar surface.

    GNSS PNT Policy and Advocacy

    While NASA engineers develop the technologies necessary for multi-GNSS navigation at ever-higher altitudes, the SCaN team works with stakeholders in the U.S. government and internationally to advance GNSS interoperability in the policy sphere. They consult on the United Nations International Committee on GNSS, helping develop additional capabilities in the Space Service Volume and beyond.

    NASA recently worked to publish GPS antenna patterns from GPS satellites that launched between 1997 and 2000, collaborating with the U.S. Space Force, the U.S. Coast Guard and Lockheed Martin, who built the satellites. The PNT team is also working to facilitate publication of antenna patterns for more recent GPS satellites.

    With this data, mission planners can better assess the performance of GNSS in high-Earth orbit and lunar space. This forthrightness also encourages other GNSS providers to be similarly transparent.

    The Goddard PNT policy team received a 2019 Agency Honor Award for their advocacy of NASA’s interests in GNSS. From let are Frank Bauer, Jenny Donaldson, J.J. Miller, Ben Ashman and Joel Parker. Not pictured, Lauren Schlenker. (Photo: NASA)
    The Goddard PNT policy team received a 2019 Agency Honor Award for their advocacy of NASA’s interests in GNSS. From let are Frank Bauer, Jenny Donaldson, J.J. Miller, Ben Ashman and Joel Parker. Not pictured, Lauren Schlenker. (Photo: NASA)

    “GNSS capabilities continue to revolutionize the ways spacecraft navigate in near-Earth space and beyond,” said NASA navigation engineer Joel Parker. “NASA’s longstanding relationships with the GNSS providers have advanced these capabilities to new heights and support the Artemis missions on and around the Moon.”

  • NovAtel ships GPS anti-jam GAJTs worldwide

    NovAtel ships GPS anti-jam GAJTs worldwide

    NovAtel’s GPS Anti-Jam Technology (GAJT) product lines achieved a milestone of thousands of units shipped worldwide in 2020. Despite COVID-19, 2020 has proven to be one of NovAtel’s most successful years in protecting positioning, navigation and timing (PNT) from cyber electromagnetic activities (CEMA) for military and civil organizations, the company stated in a press release.

    Jamming and interference are growing threats, from a crowded RF spectrum to malicious jamming attempts. However, the GNSS market is responding with anti-jam technologies. Across the world — on land, in the air and at sea — NovAtel customers use GAJT to protect their GNSS navigation and precise timing receivers from intentional jamming and unintentional interference.

    The GAJT portfolio includes commercial off-the-shelf solutions with short order lead times for rapid deployment. The range of products can be readily integrated into new platforms or retrofitted into legacy fleets.

    Photo: Hexagon | NovAtel
    Photo: Hexagon | NovAtel

    The GAJT-710, its smaller counterpart GAJT-410 and the GAJT-AE variants are used worldwide to protect PNT against jamming and interference no matter the environment.

    Beyond defense, GAJT enables users to be proactive against cyber electromagnetic activities using situation awareness technology to indicate the presence and direction of jamming signals.

    “Jamming and interference are growing threats worldwide. GAJT protects our customers no matter where they operate,” said Steve Duncombe, executive VP of Aerospace and Defense at NovAtel. “We’re proud to achieve this milestone during a challenging 2020 and will continue delivering assured positioning in our customers’ critical applications with extremely short delivery times.”

  • Verizon’s Skyward and UPS announce connected drone delivery at CES 2021

    Verizon’s Skyward and UPS announce connected drone delivery at CES 2021

    Skyward, a Verizon company, and UPS Flight Forward will collaborate to deliver retail products with drones connected to Verizon 4G LTE, as well as testing and integrating 5G for delivery.

    The companies made the announcement during the 2021 Consumer Electronics Show, taking place virtually.

    The companies aim to deliver retail products via connected drones at The Villages in Florida.


    The Villages is also the site of a driverless shuttle service test.


    “We will need the ability to manage and support multiple drones, flying simultaneously, dispatched from a centralized location, operating in a secure and safe environment,” said Carol B. Tomé, CEO of UPS. “To do this at scale, alongside Verizon and Skyward, we’ll need the power of 5G.”

    “We’re just beginning to see how the power of 5G Ultra Wideband will transform the way businesses operate,” said Rima Qureshi, chief strategy officer at Verizon. “By partnering with UPS and other innovative companies, we can learn from each other’s expertise and collaborate to create solutions that help move the world forward.”

    Photo: Verizon
    Photo: Verizon

    In 2020, Verizon, UPS Flight Forward and Skyward started testing 4G LTE in delivery drones to demonstrate cellular reliability and performance at altitude.

    “The low latency of 5G and edge compute is ideal for monitoring air traffic in and out of a busy logistics hub, especially those using mixed fleets of autonomous vehicles like drones, trucks and planes,” said Mariah Scott, Skyward President. “This year, we’ll be taking the collaboration with UPS further by testing 5G Ultra Wideband integrations to connect the sky.”

    UPS has operated more than 3,800 successful drone delivery flights since the creation of UPS Flight Forward, its drone delivery company, certified by the Federal Aviation Administration in 2019. But in 2020, drone delivery emerged as much more than rapid delivery of essential healthcare items — during the global pandemic it provided high-risk seniors a rapid and contactless delivery option to remain healthy at home.

    “Using Verizon’s 5G and Skyward, we’ll be able to transform the delivery experience — more personal, more on-demand and with the same safety, efficiency and reliability our customers trust today,” said Bala Ganesh, vice president, Advanced Technology Group at UPS.

  • Wetlands software integrated with Esri ArcGIS

    Wetlands software integrated with Esri ArcGIS

    Photo: Ecobot
    Photo: Ecobot

    Ecobot, developer of environmental data reporting software, is now integrating enhanced Esri ArcGIS mapping and data capabilities via a partnership begun in 2019 through Esri’s Emerging Partner with the Startup Program.

    The partnership enabled the addition of familiar geospatial modeling, mapping, georeferencing and data-collection capabilities within the wetland delineation app.

    The new capabilities will further automate and speed the process of wetland delineations, allowing Ecobot customers to support paperless mapping of wetlands — scientists and engineers can walk the perimeter of a wetland, dropping virtual flags with a tap on the screen.

    The Ecobot natural resources platform includes comprehensive reference materials, automated calculations, and instant generation of U.S. Army Corps of Engineers (USACE) Wetland Determination forms, along with Esri-ready shapefiles.

    The addition of Esri ArcGIS technology is expected to slash project time and costs by an additional 5%-8%.

    “Ecobot has been used to prepare more than 6,000 USACE forms for jurisdictional determinations,” said Lee Lance, Ecobot co-founder and CEO.

    “Accurate and efficient wetland mapping and data collection by scientists is critical to sound construction practices, especially in an era of climate change, when sea rise and heavy precipitation events are predicted to increase across the country,” said Dawn Wright, chief scientist at Esri.

    “We are thrilled to see one of our Emerging Business Partners taking advantage of our larger partner network to deliver Esri technology inside of a critical tool.”

  • SPH Engineering provides drone-integrated metal detection

    SPH Engineering provides drone-integrated metal detection

    Screenshot: UgSC
    Screenshot: UgSC

    SPH Engineering has launched a drone-integrated metal detection system with a Geonics EM61Lite metal detector, a new product of UgCS Industrial Solutions. The same performance and robustness available for users of the standard EM61-MK2 time domain metal detector are now available for airborne use.

    The new system is capable of detecting metallic (magnetic and non-magnetic) items in the first few meters under the surface, finding metallic objects in hard-to-reach or dangerous areas.

    Applications include unexploded ordnance (UXO) search, detection of underground infrastructure and archaeology. The integrated system has been extensively tested at SPH Engineering’s test range, and has shown excellent performance and repeatability for targets such as pipes (steel, stainless steel, reinforced concrete) and steel drums.

    The system uses an airborne (less heavy) modification of the Geonics EM61-MK2 ground metal detector. The EM61 Lite airborne variant integrates with the UgCS SkyHub onboard computer and ground control station.

    Features include automatic data logging in geotagged form and automatic terrain following with radar altimeter. The use of UgCS SkyHub enables the drone to fly in true terrain following (TTF) mode with the help of the radar altimeter and to log geotagged sensor data.

    An optional RTK/PPK GNSS receiver on the drone will geotag the data with centimeter-level precision.

  • ESA-funded GIDAS helps protect critical systems

    ESA-funded GIDAS helps protect critical systems

    Schematic of the GNSS interference detection and analysis system GIDAS. (Image: OHB Digital Solutions)
    Schematic of the GNSS interference detection and analysis system GIDAS. (Image: OHB Digital Solutions)

    In September 2020, the first GIDAS monitoring stations were installed at the Czech airport in Brno.

    GIDAS — GNSS Interference Detection and Analysis System — enables continuous 24/7 monitoring of the GNSS frequency bands within a defined region to automatically detect, classify and localize intentional interference from jamming and spoofing.

    GIDAS can raise the alarm in real time, identify the type of interference, and then pinpoint the location of these dangerous portable devices causing the interference so the authorities can take immediate remedial action. It considerably improves safe and robust operation of GNSS receivers, terminals and applications.

    GIDAS was developed by OHB Digital Solutions and Joanneum University of Applied Sciences through ESA’s Navigation Innovation and Support Programme (NAVISP).

    The system works autonomously and is designed to be easily deployed. It is scalable and flexible; it can be used as a standalone monitoring station or upgraded to a network of stations.

    Recent GNSS interference attacks include:

    • shutdown of navigation equipment at Newark airport
    • GNSS attacks of North Korea against South Korea
    • 117 incidents within one day at Kaohsiung airport in Taiwan
    • a U.S. military drone forced to land
    • a 65-meter yacht drifting off course during field trials
    • failure of emergency pagers, traffic management systems and ATMs in San Diego caused by U.S. Navy jamming.

    “In recent years, GNSS applications have increasingly become the target of intentional interference attacks, since GNSS is widely used in safety and value-critical applications,” said Andreas Lesch, CEO of OHB Digital Solutions. “GIDAS detects, classifies and localizes GNSS interference signals and thus reduces the already existing threat of receiving worse accuracies or even denial of service.”

    The GIDAS system user interface helps to pinpoint interference.  (Image: OHB Digital Solutions)
    The GIDAS system user interface helps to pinpoint interference. (Image: OHB Digital Solutions)

    GIDAS monitors the GNSS L1/E1 frequency band and reliably detects and classifies intentional and unintentional interference sources using sophisticated algorithms. GIDAS consists of a high performance data processing unit including antenna and RF front-end, and a sophisticated software solution.

    GIDAS is able not only to monitor GNSS-based position, velocity and time solutions, it monitors the received signal and baseband processing.

    The system is composed of the following software modules:

    • Software-defined GNSS radio
    • Position, baseband and C/N0 monitoring
    • Jammer and spoofing parameter estimation
    • Localization capabilities through synchronization of several GIDAS systems
    • Graphical user interface

    Initial GIDAS reports show an average of seven GNSS interference events per day. GIDAS was able to successfully classify the signal type in 96% of jamming cases that have occurred.

  • SkyTraq offers multi-band GNSS receiver with 1-cm position accuracy

    SkyTraq offers multi-band GNSS receiver with 1-cm position accuracy

    Photo: SkyTraq
    Photo: SkyTraq

    SkyTraq is offering a 12 x 16 millimeter multi-band real-time kinematic (RTK) receiver for centimeter-level accuracy positioning applications. The PX1122R works with all the four GNSS, using GPS L1/L2C, Galileo E1/E5b, GLONASS L1/L2 and Beidou B1I/B2I signals concurrently to maximize positioning availability even in difficult urban environments.

    A single-chip system-on-chip, the PX1122R is designed to deliver reliable, centimeter-level accuracy positioning for autonomous unmanned ground or aerial vehicles, the internet of things, and traditional land surveying and precision farming applications.

    The PX1122R has an RTK initialization time under 10 seconds and a maximum update rate of 10 Hz. Its update rate provides in-time positioning with a fast response time and improved guidance for fast-moving applications, the company said.

    Moving-base RTK for GNSS precise heading is also supported. By using two PX1122R and two antennas with 1-meter separation, highly accurate 1-sigma heading accuracy of 0.13 degree can be obtained; such heading accuracy is immune to magnetic interference and unaffected by the receiver’s speed.

    The PX1122R can serve as a key component to provide precise position and heading information for autonomous applications. PX1122R sample, data sheet and evaluation boards are available now.

    Founded in 2005, SkyTraq Technology Inc. develops high-performance chipset and module solutions for the consumer market. Its initial product is L1-GPS-centric, and now its products cover L1, L2, L5, L6 band GPS/GLONASS /Beidou/Galileo/QZSS/NavIC/SBAS applications.

  • Spanish elite units first to receive GMV Seeker drones

    Spanish elite units first to receive GMV Seeker drones

    Photo: Spanish Armed Forces/GMV
    Photo: Spanish Armed Forces/GMV

    The Spanish Army and Navy have received the first Seeker Remotely Piloted Aircraft Systems (RPAS) from GMV and Aurea Avionics. The unmanned aircraft is designed to boost the intelligence, surveillance and reconnaissance capabilities of two elite forces, the Spanish Army’s 6th Almogávares Paratroopers Brigade and the Marine Infantry Protection Force.

    Seeker has a 90-minute endurance and 15-km range, and weighs 3.5 kg. The UAV’s design and manufacture in Spain proved crucial during the COVID-19 epidemic, with the manufacture, test flights and delivery of the aircraft all performed within the project deadlines.

    In the final phase of the project, intensive training courses took place on the Madrid site of Aurea Avionics and the Los Alijares Firing and Maneuvering Range (CMT) of Toledo. There, future Seeker users put the RPAS through its paces with mission simulations, engaged in vehicle-tracking exercises and learned about  its theoretical and practical uses.

    Seeker will provide BRIPAC (Paratrooper Brigade) and BRIMAR (Marine Infantry Brigade) with real-time thermal-infrared and visible-spectrum video, augmented by metadata that can be mined by the operators and remotely by the command-and-control centers.

    New digitized ground-station architecture makes Seeker compatible with NATO’s standard command centers. This means any allied force will be able to integrate the aircraft into its fleet and command centers, ensuring joint operability between all troops and systems.

    The RPAS is financed by the Subdirectorate General of Planning, Technology and Innovation of the Directorate General of Armaments and Material.