Farmers rely on their GNSS receivers to keep their machines on track, their maps accurate, and their rows straight in demanding environments. GNSS receivers on agricultural equipment need to continue to perform at a high level when faced with extreme weather, temperature and vibration while navigating varying terrain. In addition, farmers rely on the correction services that provide them with the high accuracy needed to keep them operating. Still, they face challenges with outages and interruptions from obstacles blocking satellite signals.
Hexagon | NovAtel’s SMART7 GNSS receiver and TerraStar Correction Services together create an accurate, robust and reliable solution for farmers. These products undergo extensive testing to ensure a high-performing and dependable solution. The SMART7 accesses all four GNSS constellations (GPS, GLONASS, BeiDou and Galileo), providing the best availability in variable terrain and environmental conditions. To compensate for the pitch and roll in the field, the receiver includes terrain compensation — keeping farmers at centimeter-level accuracy when using TerraStar-C PRO, TerraStar-X or RTK corrections.
Photo: Hexagon | Novatel
TerraStar Correction Services are based on a global network of advanced and proprietary GNSS control centers to ensure 99.999% signal availability to farmers. By delivering quality satellite corrections without the need for base stations, farmers can get the accuracy needed for their operations in a scalable format that moves with their equipment.
Jacob Van Den Borne is a potato farmer in the southern region of the Netherlands. He has been working with precision farming for more than 10 years and recently switched his Fendt tractor to NovAtel’s SMART7. Throughout his last season, Jacob noticed a substantial improvement in signal reception while passing along the edges of his heavily treed field. Previously, his GNSS equipment would lose reception, causing his rows to wander. After using a SMART7 for one season and experiencing its high precision and reliability, Van Den Borne plans to switch all receivers on his farm to the SMART7.
Evolving advanced driver-assistance systems (ADAS) and developing safe perception and positioning systems in the agriculture industry are top priorities for NovAtel. With the challenges faced by farmers, finding new ways to support a sustainable increase in their production and productivity will help ease the pressures of a growing population.
Today, many field operations — sowing, tilling, planting, cultivating, weeding and harvesting — rely on satellite-based autonomous guidance technology for agricultural machines. Yet farmers are still challenged by poor signal tracking, signal interference, communication instability and heading inaccuracy in tough environments, such as on uneven ground or slopes or under dense tree canopy. Because of insufficiently advanced navigation technology, ordinary machines fail to achieve the high efficiency expected and might even cause safety hazards. Therefore, the market has been awaiting a high-performance smart antenna with centimeter-level accuracy.
Harxon’s Smart Antenna TS112 PRO provides scalable and reliable positioning solutions for tough agricultural environments, such as uneven ground or fields with underground cables, as well as complicated weather conditions, including rain, fog and dust clouds.
The TS112 PRO integrates in one compact enclosure Harxon’s four-in-one GNSS/4G/Bluetooth/Wi-Fi antenna and a Hexagon | NovAtel OEM GNSS module. The multi-constellation GNSS antenna is designed with Harxon X-Survey technology and features multi-point feeding with high gain and wide beam width, which ensures high phase-center stability for ultimate RTK centimeter-level positioning accuracy. This is realized by subscribing to the Ntrip service via the LTE network to receive corrections or by setting up a local base station to broadcast corrections by radio.
The Hexagon | NovAtel OEM GNSS module is default-enabled for RTK, offering precise positioning and advanced interference mitigation for space-constrained applications and challenging environments. Additionally, users can achieve globally available centimeter-level positioning accuracy by using TerraStar satellite-delivered L-band correction services, with no need to set up an expensive network infrastructure.
TS112 PRO guarantees pass-to-pass accuracy down to 20 centimeters, where relative positioning is critical. It can also provide smoother steering and straighter rows by reducing positioning jumps that might occur during RTK signal outages or when a smart antenna changes positioning modes. Its terrain compensation algorithm is capable of correcting deviations caused by a vehicle’s roll and pitch while working on uneven ground or slopes.
Automated steering systems have been widely deployed in advanced industrial countries and on large farms to improve agricultural productivity. However, technological and price barriers have constrained their wider adoption. Reliable RTK positioning and the expected accuracy of automated steering systems enable farmers to optimize their work efforts while reducing input costs and fuel consumption.
CHCNAV customer Niva LLC in Voronezh, Russia, was particularly interested in acquiring an automated steering system able to provide consistent high accuracy, even in scattered fields over long distances and with unstable coverage for GSM (the Global System for Mobile communication, a cell phone standard used in most of the world). Some systems Niva tested would lose GNSS RTK network correction signal reception while working in difficult terrain with gullies. A dual GNSS RTK correction source was therefore a key technical feature to ensure uninterrupted auto-steering operation in all terrain configurations.
The CHCNAV NX510 SE’s built-in connectivity modules include a 4G modem and an additional UHF radio module to allow farmers to work with RTK correction sources from local RTK networks or GNSS RTK base stations for no additional cost. As a result, the NX510 SE can receive GNSS RTK corrections from various GNSS network operators as well as from a local radio modem input to compensate for possible poor GSM coverage. The system’s combined GNSS+INS terrain-compensation technology ensures automated steering accuracy of 2.5 centimeters and offers excellent performance in ditching, seeding and harvesting applications.
Niva also wanted an auto-steering system that could be quickly and easily mounted on a variety of tractors and other farm vehicles at a price that would allow for rapid return on investment. The NX510 SE can be moved from one tractor to another in less than 40 minutes, as farming operations change. The software’s user interface for controlling field operations is designed for both experienced and casual users to allow even greater flexibility.
Intelligent navigation-based automation is redefining the farmer’s humble tractor to robotic status. This results in significantly faster field preparation and cropping and dramatically reduced labor costs.
Any autonomous vehicle requires the highest levels of navigational accuracy, control and safety. For farming applications, this typically means maintaining exact heading at very low speeds, often over bumpy terrain. These requirements make using the right navigational equipment critical to success. The key challenge is maintaining precise placement and movement of the tractor relative to crop rows and field boundaries. Failure to maintain precision can cause rows to be damaged or planted seedlings to be uprooted. The typical accuracy required for precision farming is position to within a decimeter (10 cm) — well beyond basic GNSS. This requires real-time kinematic (RTK) positioning and advanced signal processing.
Sabanto, a U.S.-based farming as a service (FaaS) start-up, was facing this exact challenge. The company needed a precise and reliable navigation solution for its fleet of driverless tractors deployed in a growing number of U.S. states, including Illinois, Iowa, Nebraska and Minnesota.
“The reliability of Advanced Navigation’s GNSS Compass gave us the peace of mind required to operate fully autonomously from Spring to Fall of 2020,” explained Craig Rupp, CEO of Sabanto.
Thanks to its dual-antenna GNSS and RTK corrections, the GNSS Compass can offer high-accuracy heading. Accurate position is maintained using real-time correction data, delivered from nearby ground base stations, resulting in near-centimeter accuracy under the most demanding conditions.
Furthermore, the GNSS Compass includes an integrated inertial navigation system (INS) to ensure consistent position accuracy of the tractor in the event of degraded or lost signals from GNSS satellites from heavy canopy or steep terrain. Roll, pitch and heading data also improve the stability of the autonomous platform over difficult terrain.
Sabanto engineers can now deploy and remotely monitor their fleet of autonomous tractors 24/7. Operators can simply pre-program the itinerary and field boundaries, as well as when to lift and lower tillers, resulting in the tractors planting up to two hectares (five acres) per hour.
View from a weather balloon at 100,000 feet. (Photo: NOAA)
“We’re at 103,000 feet. As you look up the sky looks beautiful but hostile. …Can see for over 400 miles. The sky [above me] is absolutely black. …I can see the beautiful …deep, dark, indescribable blue [sky below], which no artist can ever duplicate. It’s fantastic.”
— Capt. Joseph W Kittinger, USAF, Operation Excelsior III, August 16, 1960
This month, our journey begins in the future. Imagine you are in Alamogordo, New Mexico, a town with a rich history in America’s space program. You are here for a proof-of-concept, real-world exercise. After two years spent training, you are on a team that will test the viability of a stratospheric airframe, or high-altitude platform station (HAPS).
The exercise is a joint venture between several large corporations and U.S. government agencies. The HAPS began as a telecommunications support platform, but now includes many different industries. It will test backup systems for GPS and other sensing technologies.
Remote sensing is an obvious use case, and sensors are onboard to collect hyperspectral and thermal images, synthetic aperture radar, lidar, magnetometry, weather and other types of data. Some equipment is mounted on top of the platform to point toward space to monitor satellites and orbital debris. Also aboard are are satellite relays and space-based communications systems. Additionally, a Hubble-like observatory will support NASA research.
On the ground at the command center, other teams are working on the project. A mapping and survey team is in the field to ground truth the precision, accuracy and resolution of the HAPS data.
Autonomous vehicle manufacturers are testing telemetry data from the HAPS for improved precision navigation. Teams of imagery analysts and geospatial analysts are assessing the quality and value of the products, including full-motion video live-streamed from the HAPS.
Aerospace engineers are studying the performance of the airframe and monitoring its structural integrity. Meteorologists are providing upper air wind and weather forecasts. Several teams of engineers are managing various robotics systems onboard, and more scientists and engineers from multiple companies and agencies are testing their equipment.
The solar-powered Helios in flight. (Photo: NASA/Aerovironment)
Your Mission as a Stratonaut
Most tests and modifications are being handled remotely, but some require replacing the systems. This can only be accomplished by physically going to the sub-orbital station. Imagine this is your job.
You are a remote sensing technician specially designated as a stratonaut. Your training familiarized you with the various systems onboard. You trained how to use your pressure suit — its dangers, risks and capabilities — and how to interface with the suit’s augmented reality system. You know how the HAPS operates, its schematics, and the interiors of the three connected dirigibles. You can navigate your way around the HAPS and access the various decks and compartments as well as the sensors, equipment, charging ports, fuel cells and motors. You can fly the drones, dock with the station, and enter its hangar bays. You can do maintenance on the autonomous robots and the remote-controlled robots onboard the station. You know the security and safety protocols. All this you know and more; and, if things go wrong, you know what to do.
Vision of the Alpha, Bravo and Charlie HAPS stations. (Image: William Tewelow)
On this mission day, it’s early morning. Sunlight is beginning to pierce the sky above the Alamogordo base station. Two technicians are helping you into your pressure suit. Another technician at a desk has your helmet hooked up to the computer. The LED lights encircling the facemask blink slowly, indicating data is being uploaded. The augmented reality face shield glows a soft blue as the data flashes across it.
Overnight at the command center, operators controlled descent of the HAPS from 100,000 feet. It takes 10 hours to reach 65,000 feet, the altitude for your rendezvous with the station. You will fly up to the HAPS in a cargo delivery drone and dock at the forward hangar bay of Station Bravo (the second dirigible). You’ll be installing an enhanced high-resolution hyperspectral sensor array in the station’s lower observation deck.
While you are busy with the installation, the autonomous robot onboard will be in the hangar bay, swapping out the station’s spent fuel cells with fresh ones carried up by the cargo drone. Each weighs 250-pounds. After this task, the cargo drone will fly to Stations Alpha and Charlie and swap out their spent fuel cells.
Once all three are completed, the cargo drone will return to Station Bravo and take you to the top of Station Charlie to install a satellite laser relay (SLR) communications system. A remote-controlled robot operated by the engineering team at base command will meet you and carry the SLR up to the tower. While you are installing the SLR, the cargo drone will dock and recharge for your return trip. The entire mission will take seven-hours and 45 minutes.
“Many functions currently done with satellites could be performed for tactical and operational commanders using near-space assets, much more cheaply and with much greater operational utility. By operationally grouping near-space with space, the functional expertise synergies would allow much more efficient delivery of space effects to the joint commander.”
— Lt. Col. Edward B. Tomme, Ph.D., USAF, Air Power Research Institute
Two Types of Pseudolites
High-altitude, long-endurance (HALE) airframes — also referred to as pseudo-satellites, pseudolites and stratolites — are of two types.
Heavier than air. The heavier-than-air (HTA) type is a lightweight, fixed-wing aircraft with extremely long wingspans. It can stay aloft for a month or more.
HTAs are limited to carrying small payloads. They typically rise to 100,000 feet during the day powered by their solar cells, and at night descend to 60,000 feet, repeating this cycle until the batteries need replacing. The HTA platform is good for short-term missions over a broad area of interest because it normally flies in large circular patterns.
Lighter than air. The other type of pseudo-satellite is a lighter-than-air (LTA) airframe. The typical example is a dirigible, but these platforms can take on many shapes and sizes. LTAs can be enormous, with lifting capacities upward of 100,000 pounds. They operate as geostationary platforms loitering indefinitely over an area of interest and remain at the same altitude day and night. An LTA can last for 10 years or more.
The best solution is a combination of the two. A large LTA can serve as a base station to support several small HTA platforms.
“Together, NASA and the Space Force seek to advance, protect and sustain activities in, from and to space. This is truly a new era of strategic collaboration that will benefit commercial, civil and national security in space.”
— John W. Raymond, General, Chief of Space Operations, United States Space Force
A stratosphere-based telecommunications platform proposed by the Elefante Group. (Image: FCC)
HAPS Alliance
Furthering the development of the pseudo-satellite industry is a consortium of 49 companies and universities called the HAPS Alliance, which advocates for investment in this area.
The stratosphere has become increasingly important for commercial interests and national security. HAPS can provide the best of what manned aircraft operating at lower altitudes can offer, combined with the benefits of satellites, minus much of the downside of each.
Limits of aircraft. Aircraft operating at lower altitudes offer high resolutions and targeted collection. They can be easily retasked and rerouted, and equipment can be easily repaired or replaced. Aircraft are limited by constraints of time, fuel, weight, distance and weather.
Limits of satellites. Satellites, on the other hand, provide broad area coverage and long-term, operational endurance, but they are 240 miles or more above the Earth traveling at 17,500 miles per hour, or they are 18,000 miles above the Earth to maintain a geostationary orbit. It is a trade-off between resolution and dwell time.
Other drawbacks of satellites are their expense. Launching is costly and recovery is nearly impossible to make repairs. Doing so is impractical.
HAPS do not have those limitations. They can provide long-term, persistent operations over an area of interest at very high resolutions. They also can carry a complete package of sensors and equipment with the additional benefit that most everything can be repaired or replaced with minimal cost.
Locations of HAPS to cover the borders of the Continental United States. (Image: William Tewelow)
How HAPS Will Improve Geospatial Data
These systems are going to improve geospatial information. HAPS will improve spectral resolutions by a factor of 10x or better. The improved location accuracy data will impact navigation, surveying, construction, emergency services, logistics, transportation, aviation, agriculture and most other industries.
The HAPS will act in tandem with cellular networks on the ground to improve internet connectivity and telecommunications. They will improve national security while monitoring the effects of climate change, deforestation, urban sprawl, ozone, pollution and natural disasters such as floods, forest fires, tornadoes, hurricanes and more.
Provided testing proves HAPS a success, the pseudosatellite era is going to greatly impact most everyone’s life. If you are lucky, you might actually become a stratonaut. If you are interested, now is the time to prepare.
“This point of observation commands an area nearly 50 miles in diameter. The city, with its girdle of encampments, presents a superb scene. I have pleasure in sending you this first dispatch ever telegraphed from an aerial station.”
— Thaddeus S. C. Lowe, First Chief Aeronaut, Union Army Balloon Corps, Civil War, 1861
William Tewelow
William Tewelow is a Senior Aeronautical Information Specialist for the Federal Aviation Administration. He is a designated Geographic Information Systems Professionals (GISP). He served on special assignment to the U.S. Department of Transportation and led a national strategic geospatial initiative under the authority of the White House Open Data Partnership. He was among the first in the nation to earn a Geospatial Specialist Certification from the U.S. Department of Labor while working at NASA Stennis Space Center.
He is a 2016 graduate of the FAA’s management fellowship Program for Emerging Leaders. He has degrees in Geographic Information Technology and Intelligence Studies and is earning a master’s degree in Organizational Leadership with a focus on Performance Management. He is a mentor with the FAA’s National Mentor Program.
Tewelow retired from the U.S. Navy after serving 23 years as a Geospatial and Imagery Intelligence Specialist, a Naval Aviator, a Meteorologist, and a Tactical Oceanographer earning three achievement medals. He is married, enjoys traveling, connecting people, solving problems, and interested in new technology. His favorite quote is, “A man’s mind changed by a new idea can never go back to its original dimension.” ~ Oliver Wendell Holmes
Bad Elf LLC now provides an integrated laser-offset workflow for acquiring high-accuracy field data in GNSS-challenged environments using Esri ArcGIS Field Maps for Android.
The workflow integrates Bad Elf and Laser Tech (LTI) hardware in collaboration with ArcGIS technology from Esri.
“Extending compatibility to the Android mobile operating systems further promotes our commitment to the bring-your-own-device (BYOD) professional,” said Larry Fox, vice president of marketing and business development at Bad Elf. “As a member of the Esri Partner Network, we are pleased to collaborate with Esri in offering this capability to our Android customers.”
The Bad Elf Flex connects to any LTI TruPulse rangefinder over a wired or Bluetooth connection to deliver high-accuracy location data to Esri ArcGIS Field Maps. Mobile workers can efficiently complete position and height data collection in access-limited situations, saving time, money and effort.
“With the inclusion of Android support, Bad Elf introduces a powerful and innovative solution for accurate location offset and height data capture that extends the capabilities of ArcGIS Field Maps across all supported platforms,” Esri Product Lead Jeff Shaner said.
Bad Elf’s app workflow focuses on enhancing productivity, reducing field collection difficulties, and mitigating quality issues. The Bad Elf app workflow runs on Android and iOS. Connection versatility minimizes operating system limitations and allows for app-based or standalone operation.
Bad Elf also provides free tools for Esri ArcGIS Desktop and ArcGIS Pro for configuring offset-enabled point-feature capture using the ArcGIS Field Maps on iOS and Android.
The Seeker UAS proved itself a vital asset in a recent exercise for the Spanish Navy. The UAS, developed by GMV and Spanish technology company Aurea Avionics, was used for intelligence gathering through threat identification, tracking vehicles and other targets, and assessing terrain, routes and settlements.
The Marine Infantry Brigade (BRIMAR), part of the Tercio de Armada de Infantería de Marina (Marine Infantry Protection Force), deployed the Seeker Dec. 9-13 at the San Gregorio national training center in Zaragoza during an exercise known as FTX-BRIMAR 21.
In the demanding live-fire exercises, the BRIMAR troops were able to take full advantage of the Seeker’s autonomy and range to conduct operations from advantageous locations — even in adverse weather conditions, with surface winds exceeding 40 knots — and to arrange autonomous takeoffs and landings in conditions providing little to zero visibility, including night flights.
Photo: GMV
Despite the complex environment, the Seeker UAS was able to deploy smoothly and enabled the BRIMAR to locate targets both day and night thanks to its dual payload, complete with both a thermal and visible light camera. This contributed to the success of the exercises.
During the exercises, the Seeker UAS processed available data sources to supplement the video with information of use to all deployed troops, not just the system operators: the video and data generated was distributed in real time to the BRIMAR control station using VidStream, a secure, high-quality, latency-free video and data transmission system. This was done using the new RF-7800H-MP radios from L3Harris, which are natively integrated into VidStream. With this setup, the Seeker UAS was the only system to relay video from its ground position to the control station.
Photo: GMV
The Seeker system was involved in the exercises under the RAPAZ program led by the Subdirectorate-General for Planning, Technology and Innovation, which reports to Spain’s Directorate General of Weapons and Material.
The Seeker UAS is in the Class I Mini segment for defense. It has endurance of 90 minutes, a range of 15 km and a weight of 3.5 kg. Both the Spanish Navy and the Spanish Army received the first Seeker UAS units to reinforce the intelligence, surveillance and reconnaissance capabilities of the elite Marine Infantry Protection Force and the Spanish Army’s elite Almogávares VI Paratrooper Brigade.
TerraStar-C PRO is the first global correction service from Hexagon to incorporate RTK From the Sky technology to achieve RTK-level accuracy in three minutes with 99.999% availability
In late 2020, Hexagon’s Autonomy & Positioning division announced its technological breakthrough of global RTK From the Sky, demonstrating a future where instantaneous PPP and global RTK-level accuracy is possible.
Integrating this innovation into the core of TerraStar-C PRO, NovAtel’s corrections service, is the first phase in implementing RTK From the Sky technology into the company’s diverse portfolio of correction services for users worldwide.
As a result, TerraStar-C PRO has become the fastest global correction service to provide centimeter-level accuracy, not just in open-sky environments but also across challenging conditions created by buildings and foliage, according to Hexagon | NovAtel.
“RTK From the Sky technology is the foundation that enables our global correction services to be world-leading across agriculture, automotive, defense, survey, marine and autonomous applications,” said Michael Ritter, Autonomy & Positioning division president and CEO. “Our dedication to research culminated in an industry-changing technology; we’ll continue that commitment by providing the best positioning experience in speed, accuracy, availability and reliability anywhere in the world.”
TerraStar-C PRO now converges in less than three minutes by utilizing quad-band receiver and antenna technology to leverage modernized BeiDou III, GPS III and Galileo E6 signals. The resulting process generates state-of-the-art corrections for all GNSS frequencies.
Hexagon is a consistent innovator in GNSS, as seen in its role in developing RTK and PPP solutions. With this next-generation modernization of PPP correction generation and algorithm development, the company continues this tradition in providing the highest quality and best performing global positioning experience to users with land- and air-based applications.
“It’s been a privilege to collaborate across the division to develop RTK From the Sky technology and leverage our collective expertise in correction generation, PPP algorithms and the entire positioning ecosystem,” said Leos Mervart, head of PPP algorithm development at Hexagon’s Autonomy & Positioning division. “I’ve worked with PPP technologies since the beginning of my career and am proud to say that this is a new era of what global positioning can look like.”
The TerraStar-C PRO improvements are accessible now through the 7.08.10 firmware release for users on OEM7700, OEM719 and OEM729 cards and their associated enclosures for land and air applications.
Future firmware releases will include global RTK From the Sky technology throughout Hexagon’s correction service portfolios for its global client base, including precision agriculture and marine applications.
To learn more about TerraStar correction services or to request a free 5-day trial, visit NovAtel.com/TerraStar.
New radiation-tested, tactical-grade MEMS inertial accelerometers designed for spacecraft electronics testing
Silicon Designs Inc. has launched the Model 1527 series, a family of miniature, radiation-tested, tactical-grade micro-electromechanical (MEMS) inertial accelerometers.
Offered in three full-scale acceleration ranges — ±10 g, ±25 g and ±50 g — the series is designed to support a variety of critical space electronics testing requirements, including those of spacecraft, satellites and CubeSats.
In addition, their small bias and scale-factor temperature coefficients, excellent in-run bias stability, and zero cross-coupling make the Model 1527 series particularly well-suited for spacecraft electronics testing applications requiring low power consumption (+5 VDC, 6.5 mA), low noise, long-term measurement stability in –55° C to +125° C environments, and performance reliability under intermittent radiation exposures.
Radiation test report data, as generated during internal qualification testing, is available on request.
The rugged design of the Model 1527 series combines a tactical-grade MEMS inertial sense element with a custom integrated circuit, internal temperature sensor, onboard sense amplifier and ±4V differential analog output stage. The MEMS inertial sense element and internal components are housed within a lightweight, hermetically sealed, nitrogen-damped, miniature, RoHS compliant, J-lead LCC-20 surface mount ceramic package (U.S. Export Classification ECCN 7A994), weighing 0.68 grams.
Its compact and lightweight footprint allows for ease of accelerometer installation within space-constrained environments, as well as minimization of mass loading effects. Each Model 1527 Series accelerometer is marked with a serial number for traceability on both top and bottom surfaces.
All Silicon Designs’ Model 1527 Series tactical-grade MEMS inertial accelerometers are designed, manufactured, performance-verified and calibrated in-house at the company’s global corporate headquarters and R&D center outside of Seattle, Washington. Product performance documentation is supplied at the time of shipment, including residuals, thermal sensor model, acceleration model, bias, scale factor, linearity, operating current and frequency response data.
U‑blox has added a GNSS receiver module to its cellular LTE Cat 1 portfolio. The GNSS receiver in the LENA-R8 is based on the u‑blox M10 platform.
U-blox also introduced the LARA-R6, its smallest LTE Cat 1 module with global coverage. Together, the modules comprise five certified global, multi-regional and regional product variants, simplifying logistics for product developers and increasing design flexibility.
Both modules offer device makers facing imminent 2G and 3G network sunsets a future-proof migration path to 4G technology for data-streaming applications.
Additionally, they offer MQTT Anywhere and MQTT Flex connectivity via u‑blox’s Thingstream platform out of the box, thereby enabling low-power, low-cost connectivity with globally ubiquitous, seamless roaming.
Tracking and Telematics
The LENA-R8 standard-grade module series targets customers in the tracking and telematics markets seeking to minimize costs associated to their bill of material and data charges. The compact module balances cost and performance with single Rx antenna and primarily targets customer deployments in the Europe, Middle East, Africa, Asia, and South America regions.
The LENA-R8 supports a broad range of frequency bands with 2G fallback, providing maximum roaming coverage for global tracking applications using a single stock keeping unit (SKU).
A variant of the LENA-R8 series comes with an ultra-low power u‑blox M10 GNSS receiver for high performance asset tracking applications, reducing integration effort and time to market. Making no compromises in terms of GNSS performance, the module can concurrently receive up to four GNSS constellations for maximum position availability.
CellLocate Support
All variants of the LARA-R6 and LENA-R8 family support CellLocate, u‑blox’s cellular network-based location service, for coarse positioning data even in the absence of GNSS signals.
Engineering samples will be available in February.
Space Systems Command, together with United Launch Alliance and other mission partners, successfully placed the fifth and sixth Northrop Grumman-built Geosynchronous Space Situational Awareness Program (GSSAP)-5/-6 satellites into orbit for the U.S. Space Force, after an on-time launch aboard an Atlas V rocket from Space Launch Complex (SLC)-41 at Cape Canaveral Space Force Station, Florida, at 2 p.m. EST (11 a.m. PST).
“The evolving threat to our space environment requires new levels of resiliency and survivability, autonomy and automation, and unprecedented levels of integration and networking,” said Lt. Gen. Michael A. Guetlein, commander of Space Systems Command. “Today’s successful launch will enhance our capabilities in space domain awareness and our space-based space domain awareness architecture. Congratulations to the USSF-8 integrated team and all mission partners on a successful launch.”
The GSSAP-5/-6 satellites join a constellation supporting U.S. Space Command’s space surveillance operations as a dedicated Space Surveillance Network sensor.
GSSAP also supports the Combined Force Space Component Command by collecting space domain awareness data, allowing for more accurate tracking and characterization of manmade orbiting objects. GSSAP is led by SSC’s Special Programs directorate.
The National Security Space Launch (NSSL) mission launched aboard ULA’s Atlas V in the “511” configuration, which was comprised of a five-meter diameter payload fairing from RUAG Space, a single Graphite Epoxy Motor (GEM)-63 solid rocket booster from Northrop Grumman, and a single RL-10 engine from Aerojet Rocketdyne on the Centaur upper stage.
SSC’s Launch Enterprise acquired the launch service through ULA and was responsible for successfully placing the GSSAP satellites on orbit.
The NSSL program provides assured access for the United States’s critical warfighting space assets, and this launch vehicle has reliably placed valuable assets into their intended orbits repeatedly, adding to the NSSL program’s success record of 88 consecutive launches. The program supports a full range of government mission requirements for the nation’s defense and intelligence sectors.
Space Systems Command is the U.S. Space Force field command responsible for rapidly identifying, prototyping and fielding resilient space capabilities for joint warfighters. SSC delivers sustainable joint space warfighting capabilities to defend the nation and its allies while disrupting adversaries in the contested space domain. SSC mission areas include launch acquisition and operations; space domain awareness; positioning, navigation and timing; missile warning; satellite communication; and cross-mission ground, command and control and data.
A ULA Atlas V rocket carried the USSF-8 mission for the U.S. Space Force into orbit, (Photo: ULA)
Case New Holland (CNH) has selected the Tallysman Wireless VeraChoke antenna for modernization of its high-precision European GNSS real-time kinematic (RTK) network.
“The objective of the GNSS antenna update is to enable the tracking of all GNSS constellations and signals, thus improving the robustness, convergence time, and accuracy of positioning within CNH’s European RTK network,” said Michiel Jochims, CNH Industrial RTK manager EMEA. “At this stage, with only 25 stations updated, we are delighted to observe a significant performance improvement. We look forward to continuing the network update and bringing enhanced positioning to all of our European customers.”
The VeraChoke antenna provides excellent multipath suppression and repeatability of PCV and group delay variation (GDV), making it suitable for GNSS reference networks, explained Temo Wubbena, CEO of Geo++. “After detailed analysis, we have recommended Tallysman’s VeraChoke antenna to CNH Industrial.” Geo++ is supporting the upgrade of CNH Industrial’s European RTK network.
The patented VeraChoke has a very tight phase center variation (PCV), strong multipath mitigation and excellent performance across the full GNSS spectrum. Its PCV and phase center offsets (PCOs) are repeatable from unit to unit, making suitable for network RTK applications.
