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  • ComNav Technology: Building Sweden’s Tallest Tower

    ComNav Technology: Building Sweden’s Tallest Tower

    When completed, the Karlatornet will be Sweden’s tallest building and redefine the skyline of the city of Gothenburg, rising to 74 stories and 246 meters (the Burj Khalifa in Dubai, currently the tallest human-made structure, is 828 meters high). Ensuring that the building remains stable even when deformed by very strong winds, sun exposure, seismic activity, settling or shrinkage will require very high precision construction methods. To ensure its vertical alignment, the engineers are using the core wall control survey (CWCS) method, which relies on active GNSS control points, and SinoGNSS T300S high accuracy GNSS receivers.

    A SinoGNSS multi-constellation T300 GNSS receiver and a 360° prism mounted at the top of a building under construction. (Photo: ComNav Technology)
    A SinoGNSS multi-constellation T300 GNSS receiver and a 360° prism mounted at the top of a building under construction. (Photo: ComNav Technology)

    The CWCS method was first used during the construction of the Burj Khalifa and was subsequently applied in the construction of many other high-rise buildings around the world. Swedish surveying company Teodoliten decided to apply this method for the Karlatornet project. Core walls, which are key structural components of high-rises, require a layered construction approach, with multiple concrete pours for each core wall element. CWCS makes it possible to precisely align these core walls with the vertical axis of the building during construction, using GNSS receivers, total stations, inclinometers, and other tools.

    When constructing a tall building, it is essential to continuously measure the positions of various elements at its summit to ensure their vertical alignment. This is typically done by placing at the top of the building four GNSS receivers — referred to in this context as active GNSS control points — each with a 360° prism at the bottom. By sighting the prisms and using the 3D coordinates from the GNSS receivers, a surveyor then sets up a total station. This obviates the need for an extensive array of ground control points, which are often not visible from the top, and for holes in the slabs to accommodate vertical laser plummets. Additionally, observations from a nearby reference station are used to post-process the data from the GNSS receivers in post-processed kinematic (PPK) mode to achieve an accuracy of a few millimeters. The Karlatornet project uses four SinoGNSS multi-constellation T300 GNSS receivers for the active control points.

    It is also necessary to correct for the movement of the survey platform as the building’s main axis is flexed by the loads applied to it during construction. This is achieved by placing a series of high-precision dual-axis inclinometers along the core walls and then applying a least squares adjustment that takes into consideration the floor height of the measuring devices.

    The SinoGNSS T300 receivers operating in GNSS-RTK mode also will be used to monitor and document post-construction building deformations.

  • Topcon upgrades TSS network

    Topcon upgrades TSS network

    Photo:Topcon Positioning Systems’ U.S.-based Topcon Solutions Store (TSS) network now offers the Topcon Layout Navigator (LN) combined with HP SitePrint. The integration aims to advance construction automation and efficiency for a wide range of professionals including general contractors and mechanical, electrical and plumbing (MEP) contractors.

    Integrating Topcon’s LN-150 with HP SitePrint’s autonomous robotic unit that prints site layout plans directly on construction floors aims to advance construction technology. The solution is designed to streamline the site layout process, which is to save time and cost by replacing manual layout methods with digital precision.

    The LN-150 supports Wi-Fi and long-range Bluetooth communication. It is also compatible with cloud-based workflows to offer precise 3D layout capabilities that are increasingly vital due to labor shortages.

    TSS now offers the solution across its 20-state network. Click here to learn more.

  • Stonex launches hybrid mobile mapping solution

    Stonex launches hybrid mobile mapping solution

    Image: StoneX
    Image: StoneX

    Stonex has launched the X70GO SLAM laser scanner designed for fast and efficient large-area surveys. It combines mobile scanning with a stationary mode to scan with high resolution to enhance overall surveying capabilities.

    X70GO is a real-time 3D model reconstruction device that integrates an inertial navigation module, high-performance computer and storage system. It is equipped with a 360° rotating head, which, combined with the SLAM algorithm, can generate high-precision point cloud data. The built-in 512GB memory disk stores survey results and the dismountable handle has a 1.5-hour battery life.

    A 12MP RGB camera offers texture information, while a visual camera aims to enhance the real-time preview with the GOapp. Mapping results can be generated immediately inside the scanner. Users can then color the points and improve their accuracy during post-processing with GOpost software.

    The system comes with a hybrid scanning capability. The X-Whizz mode combines the advantages of SLAM mode with the resolution of a static scan, which eliminates the need for multiple scan stations. Users can move around the scene to collect the entire 3D point cloud without time-consuming cloud-to-cloud alignment.

    The technology incorporated in the new scanner is designed to provide extended range, a higher number of points per second and advanced onboard processing algorithms. The SLAM laser scanner is well-suited for challenging and demanding environments and can be used in a variety of applications, including BIM, industrial sites, real estate, heritage preservation, tunnels and mining.

    Users can add an RTK module to set a point cloud in a global coordinate system. This can support the addition of GNSS information to lidar and inertial measurement unit (IMU) in the SLAM algorithm. In situations with limited GPS connectivity – such as indoors or in challenging environments – the system will rely on lidar and the IMU for positioning purposes.

  • Inertial Labs enhances remote sensing payload

    Inertial Labs enhances remote sensing payload

    Image: Inertial Labs
    Image: Inertial Labs

    Inertial Labs has launched the RESEPI lidar Gen-II remote sensing payload instrument. It comes in three modes to cater to users’ individual operational needs: aerial mode for comprehensive airborne data collection, mobile mode for dynamic vehicular data collection and a versatile handheld/backpack that aims to provide portability and ease of use for ground personnel.

    The RESEPI lidar Gen-II has a 175% increase in computing power, designed to speed up processing and enhance efficiency during complex tasks. Its memory capacity has been increased by 700%, which allows for extensive data handling and improved system performance. The system’s 50% increase in storage capacity aims to facilitate longer durations of data collection without frequent offloads.

    The Gen-II features seamless integration capabilities with UAVs and other platforms. The system’s sensor-agnostic design allows for external sensors to be easily integrated, including lidar and cameras. It can also compute point clouds, trajectories and solutions in real time, which is critical in time-sensitive missions.  The system can be used in a variety of applications including mapping, inspection, autonomous, navigation and robotics.

  • Fairview Microwave launches military-grade antennas

    Fairview Microwave launches military-grade antennas

    Image: Fairview Microwave
    Image: Fairview Microwave

    Fairview Microwave has launched its advanced military-grade antennas. The new products include ruggedized GPS, manpack omni and vehicle omni antennas designed for mission-critical applications such as vehicle navigation, personnel communications, vehicle communications, electronic warfare and jamming.

    The military-grade antennas meet MIL-STD-810 to offer durability while adhering to strict quality standards. The antennas are also compliant with the Trade Agreements Act (TAA), which makes them suitable for government and defense applications.

    Built to withstand tough conditions, these antennas feature heavy-duty construction and a rugged design for long-lasting performance in challenging environments. They are designed to perform in extreme weather conditions and on rough terrains.

    Its robust construction and NATO/U.S. standard mounting options aim to simplify integration into various setups during critical operations.

  • Trimble launches three new products

    Trimble launches three new products

    Trimble has released three new surveying and mapping products: SiteVision 5.0, TDC6 and Trimble Radio. All three products are available through Trimble Geospatial authorized distributors.

    Trimble SiteVision Software 5.0. (Image: Trimble)
    SiteVision Software 5.0. (Image: Trimble)

    SiteVision Software 5.0 is a high-accuracy outdoor augmented reality system, now with a 3D scan tool. The new 3D scan tool allows users to use lidar sensors available on some Apple Pro devices. The Trimble DA2 GNSS receiver is designed to capture point clouds efficiently and accurately with a single handheld solution.

    Users can visualize 3D scan data directly in the field with SiteVision’s augmented reality view. The software allows users to create as-builts of the job site on the go, measure and plan resource allocation, reduce scan times, supplement UAV data and more by combining scanning and precision in a mobile solution. The product aims to facilitate practical and accessible field-to-office workflows for surveyors, contractors and engineers.

    TDC6. (Image: Trimble)
    TDC6. (Image: Trimble)

    TDC6 is a handheld GNSS data collector designed for high-performance construction surveying.

    The device allows contractors to work with more complex data sets more effectively in the field, connect to the office for on-the-spot approvals, and quickly communicate changes to field crews.

    The small, rugged device offers integrated Wi-Fi and Bluetooth, built-in cameras and 5G compatibility in a lightweight, shock-, dust- and water-resistant package. The device integrates seamlessly with Trimble data collection applications, including Trimble TerraFlex GIS software and Trimble Access survey field software, as well as third-party apps such as Esri ArcGIS Field Maps.

    TDL450B radio. (Image: Trimble)
    TDL450B radio. (Image: Trimble)

    The TDL450B radio is a 450 MHz external radio with Bluetooth for transmitting, receiving and repeating GNSS corrections. It offers flexible configuration options and rugged reliability for efficient use of GNSS in various applications. Designed to support Trimble and third-party RTK base stations, this sophisticated radio modem puts Trimble’s newest data link technology in the hands of users on the job site. The TDL450B radio is an advanced, high-speed, wireless UGH data radio built to endure harsh conditions.

     

  • Final grounding for Ingenuity?

    Final grounding for Ingenuity?

    NASA’s Ingenuity took this picture on Jan. 18, 2024. The sand-dune, rock-less area where Ingenuity last showing the shadow of its damaged rotor blade. (Image: NASA)
    NASA’s Ingenuity took this picture on Jan. 18, 2024. The sand-dune, rock-less area where Ingenuity last
    showing the shadow of its damaged rotor blade. (Image: NASA)

    It appears that the little extraterrestrial drone that could has come a cropper on Mars and now will not be flying again – it is permanently grounded. The Jet Propulsion Lab (JPL) crew managing Ingenuity was running a regular scouting trip over a featureless sand-dune area on Dec. 22, 2023. Suddenly, the UAV’s visual navigation system malfunctioned, which led to a hard emergency landing.

    When the autonomous navigation system did not have any landmarks to match its digital reference map, it reverted to an emergency landing. Maybe the poor guy should have had a few moments to gather its airborne wits and to come down softly, but alas at the same time the connection with the rover was lost, he dove for cover and broke a chunk off at least one of the counter-rotating blades. This now apparently prevents further take-offs. Mars’ atmosphere is only 1% as dense as Earth’s, so those rotors need all their designed lift capabilities to grab enough ‘air’ and get the 4 lb helicopter airborne. The flight control system may be unable to cope with the resulting compromised lift profile. Either way Ingenuity’s flying days are over, according to NASA.

    Conceptual design for the Sample Recovery Helicopters (Image: Aerovironment/ NASA/ JPL)
    Conceptual design for the Sample Recovery Helicopters
    (Image: Aerovironment/ NASA/ JPL)

    Ingenuity completed 72 flights over the course of three years, surpassing its original 30-day mission to prove the possibility of a miniature, autonomous helicopter flight on Mars. After its initial four flights, NASA and JPL chose the UAV to scout out safe paths for the Perseverance rover from an airborne perspective.

    All is not lost for Ingenuity, however. AeroVironment, the UAV manufacturer that co-developed Ingenuity with NASA/JPL, has been awarded another contract to design and develop two prototype ‘sample-return’ helicopters for NASA’s next major Mars expedition.

    Building on Ingenuity’s design, the new UAV will have wheels and a grappling contraption to pick up sample tubes, which could assist in the Mars sample recovery mission. Perseverance is currently expected to be the lead in transferring cached sample tubes to the new Sample Retrieval Lander for return to Earth, but the new helicopters provide a different backup option on Mars for pick-up and transport of the tubes.


    Back here on Earth, the latest tragic news from the Middle East — the UAV attack on the US Tower 22 military outpost in Jordan which cost three soldiers their lives and injured at least 34 others — appears to have been due to a lack of defensive capability. Earlier news releases indicated that the kamikaze UAV had arrived at the same time as the expected return of a U.S. UAV from the base, implying that defenses may have been taken down temporarily. It now seems that there was little active defense to prevent the attack.

    The attacking UAV reportedly came in very low, and the base was unable to track its approach. The base is said to have defensive signal jamming capabilities, but without radar visibility of the UAV and knowing an attack was in progress, the jammers may have been ineffective or inactive.

    Tower 22 was thought of as a low-risk-of-attack U.S. base, perhaps supporting another U.S. base in Syria with logistics, so no active drone suppression system had been provisioned. This assessment, and those for similar bases in the area and around the world, may perhaps have to be revised and sufficient active defenses may need to be installed.


    While U.S. and Ukrainian forces deal with attacking drones, Iran has unveiled its latest addition to its arsenal of one-way killer unmanned aircraft.

    Image: Iranian Military Media
    Image: Iranian Military Media

    Iran displayed the Shahed-238 in public in November 2023, so there may have already been enough time to get some of these very fast-flying vehicles through the manufacturing process and begin deliveries to Russia and Iranian proxy agents. The advantage of jet-power is of course significant speed over propeller-driven variants, while the range may be significantly less for the same fuel capacity. The disadvantage for the United States and Ukraine is that most fielded conventional UAV detection radars have difficulty seeing fast targets in time to activate and aim defensive weapons.

    The situation for Ukraine and the United States in the Middle East appears to be worsening as large numbers of Iranian-supplied and locally manufactured kamikaze UAVs are pumped into the war zone and ‘hot spots’ in the Middle East.

    It is sad that Mars aerial views may be limited as Ingenuity seems to be permanently grounded, and the Middle East doesn’t sound too safe to be hanging around in either! Further escalation of prices might be expected, too, as a good part of the volume of cargo ships settle into sailing around Africa. Let’s look for better news in the coming months.

  • DTC, Inertial Labs collaborate on GNSS-denied UAV solution

    DTC, Inertial Labs collaborate on GNSS-denied UAV solution

    Photo:Domo Tactical Communications (DTC) and Inertial Labs have partnered to develop an integrated uncrewed systems solution for UAV manufacturers and end users. The new solution combines technologies from both companies to create a single navigation, command and control (C2), and intelligence, surveillance and reconnaissance (ISR) system.

    DTC’s Manet Mesh radio — with MeshUltra product family waveforms — aims to provide robust, high-bandwidth C2 and ISR links, which can allow uncrewed vehicles to operate successfully in hostile RF environments. By integrating Inertial Labs’ inertial navigation system (INS) and DTC’s Mesh-based RF ranging capability, those same vehicles are designed to operate when space-based positioning systems are unavailable due to jamming, spoofing or lack of sky view. The INS provides assured position, navigation and timing (APNT), and alternative navigation (ALTNAV) solutions directly to the uncrewed vehicle.

  • SimActive launches upgraded cloud capabilities

    SimActive launches upgraded cloud capabilities

    Image: SimActive
    Image: SimActive

    SimActive has released upgraded cloud capabilities for its Correlator3D mapping software. With its distributed processing capabilities, Correlator3D allows users to scale their processing to match individual operational needs.

    With the upgrade, Correlator3D can process large mapping projects and deliver results from UAV, aircraft and satellite imagery. It features a software package – a patented, end-to-end photogrammetry solution — designed to generate high-quality geospatial data from a variety of sources, including satellite and aerial imagery and UAVs. The upgrade aims to improve the technology’s performance in diverse cloud scenarios.

    Correlator3D is designed to provide aerial triangulation (AT) and generate dense digital surface models (DSM), precise digital terrain models (DTM), point clouds, orthomosaics, 3D models and vectorized 3D features. By using GPU technology and multi-core CPUs, Correlator3D offers enhanced processing speed to support the rapid production of large datasets.

  • UAV Navigation-Grupo Oesía unveils GNSS-denied navigation kit

    UAV Navigation-Grupo Oesía unveils GNSS-denied navigation kit

    Image: UAV Navigation-Grupo Oesía
    Image: UAV Navigation-Grupo Oesía

    UAV Navigation-Grupo Oesía has released its GNSS-denied navigation kit designed to offer navigation capabilities in challenging environments.

    The kit combines UAV Navigation’s attitude and heading reference system (AHRS), the POLAR-300, with its Visual Navigation System, the VNS01, designed to offer unmatched dead reckoning navigation capabilities with minimal drift.

    The technology offers users improved navigational accuracy, with error rates as low as 0-1% over covered distances. This is made possible by the kit’s visual-based technology, which allows for precise attitude and position estimation to stabilize flights in challenging conditions. The kit is equipped with advanced algorithms that can detect and counter sophisticated spoofing and jamming techniques to offer reliable and secure navigation, even in the face of potential signal disruptions.

    As technology advances and geopolitical challenges emerge, the demand for reliable and secure navigation for UAVs intensifies. Offering operational integrity in both the civil and defense sectors is paramount, especially with the rise of disruptive systems designed to interfere with radio-electronic navigation and communication.

  • Russia’s space-based nuclear weapon? Here’s an educated guess

    Russia’s space-based nuclear weapon? Here’s an educated guess

    Earlier this week House Intelligence Committee Chair Mike Turner sounded an alarm about a serious national security threat. It had to do with Russia, a weapon, space, and something nuclear.

    For many, these clues conjured up images of bombs falling to Earth from space, satellites destroyed by powerful electromagnetic pulses, shrapnel impacting the space station, and so on.

    Yet, putting nuclear weapons in space would be a clear violation of the 1967 Outer Space Treaty to which Russia and the United States are both signatories. It would also significantly increase East-West tensions at a time when Russia has enough tension and international condemnation to handle.

    Thursday evening the White House calmed the waters a bit by saying that Russia was pursing an anti-satellite weapon that cannot cause physical destruction on Earth.

    The most reasonable conclusion to draw from all of this is that Russia is closing in on its goal of having a nuclear-powered electronic warfare capability in space.

    Such a reusable weapon could be far more useful than any one-use nuclear explosive device.

    Threat = Intent + Capability

    A lengthy and detailed 2019 article on the site “Space Review” examined indications that Russia had begun construction of such a device. Titled “Ekipazh: Russia’s top-secret nuclear-powered satellite” it begins:

    “There is strong evidence from publicly available sources that a Russian company called KB Arsenal is working on a new type of military satellite equipped with a nuclear power source. Called Ekipazh, its mission may well be to perform electronic warfare [EW] from space.”

    The author, Bart Hendrickx, goes on to explain that development of such a weapon would be entirely in keeping with reported Russian government plans. Citing one Russian language source he says:

    “… the deployment of EW platforms in orbit would be in accordance with a policy for Russia’s electronic warfare program until 2020 approved by the Russian government in January 2012. A summary of this policy indeed mentions space-based electronic warfare as one of the objectives to be accomplished in the period before 2025. More specifically, it talks about the need to deploy ‘multifunctional space-based EW complexes for reconnaissance and suppression of radio-electronic systems used by radar, navigation and communications systems.’”

    When intelligence agencies assess the severity of a particular threat, they look at an adversary’s desire or intent to carry out a particular act, and their capability to do so. If the reporting is correct, Russia has intended to put a nuclear-powered EW satellite or spacecraft in orbit for some time. This week’s political dust up may mean that the decades of hard work described by Hendrickx in Space Review have paid off and given them the ability to do so.

    More Useful Than Orbiting Bombs

    The United States is far more dependent upon space than any other nation. As regular GPS World readers know, this is especially true for the essential positioning, navigation, and timing services that underpin virtually every technology.

    Destroying satellites would quickly lead to a shooting war that no one would want.

    On the other hand, electronic warfare doesn’t necessarily lead to casualties right away and is harder to recognize as actual warfare. For example, Russia has been attacking NATO countries, ships, and aircraft in the Baltic with GPS jamming and spoofing on and off since mid-December. No one has died (yet) and NATO, to the best of our knowledge, has not responded.

    Rather than destroying satellites, how much more useful is it to be able to temporarily disrupt the operation of one or more satellites? Or perhaps one type of satellite, such as GPS?

    Such attacks are reversable, so the attacked party is less likely to send bombs and bullets in return right away. And if the attacker gets what they want, or suddenly discovers they have gone a bit too far and are approaching a kinetic exchange, backing off is as easy as flipping a switch.

    Just the threat of being able to deny GPS or other satellite signals over a wide area would be useful.

    In fact, Russia has already made this kind of threat and it didn’t backfire.

    In November 2021, prior to its invasion of Ukraine, Russia used a ground-based missile to destroy one of its own defunct satellites. Shortly thereafter Russian state-sponsored media claimed the demonstration “… means that if NATO crosses our red line, it risks losing all 32 of its GPS satellites at once.” Aside from a strong diplomatic tongue-lashing, there were few consequences. Additionally, wherever the “red line” was, it seems that NATO did not cross it.

    Nuclear Powered EW Most Likely

    It’s hard to know what more will be revealed, if anything, about this week’s dust-up over Russia, weapons, space, and nuclear.

    But Russia has long prided itself on its electronic warfare prowess. It sees EW as a counterbalance to the West’s dominance in high tech weapons and warfare.

    It is highly likely that Russia is executing its plans to extend this prowess and advantage into space with a nuclear-powered EW satellite.

    Whether or not this is the root Washington’s kerfuffle, the possibility should be an on-going concern for the United States.

    Our dependance on space makes us vulnerable. Our critical over-dependence on space for PNT, especially in light of the terrestrial PNT alternatives available to Russia and China, exposes our jugular and virtually invites attack.

    We have placed most of our eggs in the same basket — and there are too many ways in which it can be knocked to the ground.

    Until the United States establishes a resilient national PNT architecture, one with GPS at its center supported by other diverse and robust sources, we will continue to unintentionally encourage such things as space-based nuclear-powered electronic warfare and be at severe risk.

  • DTC, Inertial Labs collaborate on GNSS-denied UAV solution

    DTC, Inertial Labs collaborate on GNSS-denied UAV solution

    Photo:Domo Tactical Communications (DTC) and Inertial Labs have partnered to develop an integrated uncrewed systems solution for UAV manufacturers and end users. The new solution combines technologies from both companies to create a single navigation, command and control (C2), and intelligence, surveillance and reconnaissance (ISR) system.

    DTC’s Manet Mesh radio — with MeshUltra product family waveforms — aims to provide robust, high-bandwidth C2 and ISR links, which can allow uncrewed vehicles to operate successfully in hostile RF environments. By integrating Inertial Labs’ inertial navigation system (INS) and DTC’s Mesh-based RF ranging capability, those same vehicles are designed to operate when space-based positioning systems are unavailable due to jamming, spoofing or lack of sky view. The INS provides assured position, navigation and timing (APNT), and alternative navigation (ALTNAV) solutions directly to the uncrewed vehicle.