Tag: RTK GNSS receiver

  • Launchpad: Rescue beacon, satellite imagery, z-axis positioning

    Launchpad: Rescue beacon, satellite imagery, z-axis positioning

    A roundup of recent products in the GNSS and inertial positioning industry from the November 2022 issue of GPS World magazine.


    OEM

    GNSS Module

    For UAV, precision agriculture and autonomous machines

    Photo: Unicore Communications
    Photo: Unicore Communications

    The UM982 GNSS module is a high-precision, dual-antenna real-time kinematic (RTK) positioning and heading module. It supports BeiDou B1I/B2I/B3I; GPS L1/L2/L5; GLONASS L1/L2; Galileo E1/E5a/E5b, QZSS L1/L2/L5; and SBAS in dual-antenna mode. The highly integrated, compact (16 mm × 21 mm × 2.6 mm) module can reduce the design area of an OEM board by 72% compared to previous modules. Power consumption is less than 0.6 W. The NebulasIV GNSS system-on-chip is a key part of the UM982’s navigation system. The NevulasIV integrates RF, baseband and high-precision algorithms on a single chip, with supporting functions built in. High-level performance indicators include raw observation accuracy, RTK positioning accuracy, precise point positioning accuracy, and time to first fix. The two antennas can independently participate in deriving an RTK solution and outputting the positioning results.

    Unicore Communications, en.unicorecomm.com

    GNSS Antenna

    Alternative to ceramic patch provides omni-directional performance

    Photo: Antenova
    Photo: Antenova

    The Agosti (part number SR4G080) is a new miniature surface-mount-designed (SMD) antenna for GNSS applications. It measures 9.0 mm x 5.8 mm x 1.7 mm and operates with exceptional efficiency in a reduced space on a corner of a printed circuit board. It has a small ground-plane requirement of 40 mm x 20 mm, 70 mm x 25 mm and 80 mm x 30 mm, making it suitable for small form-factor designs such as wearable devices, trackers and onboard diagnostics.

    Antenova, antenova.com

    Timing Antenna

    Housed Dual-Band antenna with Accutenna technology

    Photo: Tallysman
    Photo: Tallysman

    The dual-band TW3885T antenna supports GPS/QZSS L1/L5; Galileo E1/ E5a/b; BeiDou B1/B2/B2a; GLONASS G1/G3; and satellite-based augmentation systems in the region of operation: WAAS (North America), EGNOS (Europe), MSAS (Japan) or GAGAN (India). It is housed in a through-hole mount, weatherproof (IP69K) enclosure. It mitigates the effects on GNSS receivers of new signals or harmonic frequencies from adjacent LTE bands on the radio-frequency spectrum. For permanent installations, L-bracket (PN 23-0040-0) or pipe (23-0065-0) mounts are available. Tallysman provides an antenna installation guide that recommends a 100 mm –125 mm ground plane and provides antenna installation and cable connector waterproofing best practices.

    Tallysman Wireless, tallysman.com

    Front End

    Simplifies product development for high-precision applications

    Photo: Taoglas
    Photo: Taoglas

    The TFM.110A is the first in a new series of high-precision, multi-band GNSS front ends for autonomous vehicles, precision agriculture, automotive applications and robotics. It comes fully integrated with two cascaded low noise amplifiers (LNA) and pre-filters in a small, low-profile, shielded surface-mount package. When used between the device’s GNSS receiver and antenna, the two-stage amplifier solution eliminates the need for complex and challenging onboard filter and amplifier circuits. It supports L1, L2 and L5 bands and enables seamless signal transmission, signal purity and position accuracy in high-precision applications.

    Taoglas, taoglas.com


    SIMULATORS

    Signal Simulator

    Provides interference, spoofing, encryption and authentication capability

    Photo: IFEN GmbH
    Photo: IFEN GmbH

    Version 2.8 of the NCS Nova RF signal simulator offers advanced capabilities. With integrated interference generation capability, the Nova can generate coherent interference signals with a signal power of up to –30 dBm. The ability to assign two users to one RF output enables integrated spoofing scenarios with a single RF output, meaning spoofing is available even with an entry-level single RF Nova. The new release has advanced navigation message authentication simulation capability compliant to User ICD 1.0 for the Galileo E1-B OSNMA, meaning specific OSNMA events can be simulated — key to ensuring compliant receiver behavior. Supported events include renewal and revocation of both a public key and a TESLA keychain. GPS cross-authentication and generation of Galileo E6-C encrypted codes are also supported.

    IFEN GmbH, ifen.com


    MOBILE

    Z-Axis Positioning

    Enables first responders to locate callers on floor levels

    Photo: Polaris Wireless
    Photo: Polaris Wireless

    Z-axis location service enables the pinpointing of a smartphone user within one floor level inside a multi-story building. The technology — demonstrated to meet the 3-meter vertical location accuracy requirement of the Federal Communications Commission (FCC) — is integrated into Schok Gear’s newly released flip phones. The Schok phones provide consumers with a simple, powerful device. Adding indoor and vertical location to these phones enables first responders to locate all wireless 911 callers with floor-level accuracy in multi-story buildings.

    Polaris Wireless, polariswireless.com

    Rescue Beacons

    Connected with free mobile app

    Photo: ACR Electronics
    Photo: ACR Electronics

    The new ACR Electronics GlobalFix V5 Emergency Position-Indicating Radio Beacon (EPIRB) and ResQLink AIS Personal Locator Beacon (PLB) have integrated the automatic identification system (AIS) to increase the speed of location and aid. They also are compatible with Return Link Service (RLS) alerting. The combination of services ensures faster rescue and increases chance of survival of both boat (EPIRB) and crew (PLB). The safety beacons deliver mobile connectivity to a cell phone with a free mobile app, made possible with the addition of near-field communication technology in the beacons. With the app, users can monitor their beacons, review self-test results, view GNSS test locations, and monitor beacon performance and maintenance by scanning the beacons with their mobile phones. Besides GNSS positioning, the lightweight beacons have 406-MHz Cospas-Sarsat distress signal with MEOSAR compatibility and 121.5-MHz local homing signal.

    ACR Electronics, acrartex.com

    Device Management Platform

    For Internet of Things deployments

    Photo: Laird Connectivity
    Photo: Laird Connectivity

    The Canvas Device Manager simplifies workflows for configuration and maintenance of internet of things (IoT) device deployments. It enables users to easily set up devices, monitor performance, and keep software up-to-date across the entire IoT device fleet. Device parameters can be remotely managed, and performance monitored. Canvas enables users to organize large numbers of devices to quickly build and maintain IoT solutions, and software updates can be remotely and rapidly deployed, thwarting security attacks.

    Laird Connectivity, lairdconnect.com


    SURVEYING & MAPPING

    Slim Receiver

    Advanced technologies in a slim, portable unit

    Photo: ComNav
    Photo: ComNav

    The N2 Palm RTK GNSS receiver is suitable for surveying, mapping and construction. It has a highly integrated main board and a three-in-one antenna, yet weighs 0.72 kg with battery and measures 48 mm. Powered by ComNav’s SinoGNSS K8 high-precision module, the N2 can track 1,590 channels, including all existing and planned signals of GPS, BDS-2, BDS-3, GLONASS, Galileo, QZSS and SBAS. Its advanced satellite-tracking technology ensures it works well even in harsh environments, such as under heavy foliage or close to buildings. A third-generation inertial measurement unit (IMU) makes the N2 immune to magnetic disturbance, which greatly improves its reliability. Pole-tilt compensation of up to 60° allows surveyors to locate points within 2.5 cm. By using the company’s Quantum algorithm, the N2 achieves calibration-free operation — after 10 seconds of initialization, users can make tilt measurements with centimeter-level accuracy for an extended period, greatly improving efficiency.

    ComNav Technology, comnavtech.com

    Image Library

    Now with Pléiades Neo 30-cm imagery

    Photo: Airbus
    Photo: Airbus

    Airbus has added 30-cm Pléiades Neo imagery to its OneAtlas Living Library service. The new data source will complement the service which already allows users to instantly access a premium catalogue of Pléiades 50 cm and SPOT 1.5 m data via streaming, download and API. The Living Library provides frequent updates over urban areas, airports, harbors and military sites to name a few. Imagery is updated every day and processed in the cloud, with flexible options for integration into GIS workflows. With the OneAtlas Living Library, Airbus offers a pay-per-order option but also a subscription-based service that allows users to access premium content quickly available into their account, as well as a deeper archive of more than 10 years of imagery by Pléiades and SPOT satellites at a higher incidence angle and cloud coverage threshold, which will be available in just a few hours. OneAtlas also provides access to several other data services, such as reactive tasking, that allows users to task a full suite of optical and radar satellites, including Pléiades Neo, or access more than 15 years of global radar data, as well as the ability to download the WorldDEM product suite among others.

    Airbus, https://oneatlas.airbus.com/service/living-library

    Satellite Imagery 3

    Free, user-friendly tool shows the Earth’s changes

    Photo: Kermap
    Photo: Kermap

    The Nimbo Maps platform provides monthly 10 m-resolution images of changes on Earth in a user-friendly format. The images are chronological, seamless and free of clouds, and include intuitive comparison timelapse features. The platform, developed by French startup Kermap, relies on innovative artificial intelligence methods to process satellite images supplied by the European Union’s Copernicus program through its Sentinel missions. APIs automatically retrieve data extracted from satellite imagery, providing Kermap customers with real-time, strategic, value-added information in the fields of agriculture, land planning and environmental transitions. Current coverage includes Europe, the Middle East and the United States, with plans to provide global coverage by early 2023.

    Kermap, www.kermap.com; Nimbo, nimbo.earth

    3D Imaging System

    A lightweight payload package

    Photo: GeoCue
    Photo: GeoCue

    The TrueView 655/660 3D imaging system uses the Riegl miniVUX-3UAV laser scanner and three fully integrated mapping cameras (right, left and nadir) for high-accuracy mapping with excellent vegetation penetration and wire detection. Previous TrueView 3D systems carried dual oblique cameras to maximize mapping coverage. The TrueView 655/660 adds a third RGB camera, allowing for imagery directly below the sensor to be captured. The third camera provides a direct view of the ground below to maximize data collection for time flown, while improving the quality of photogrammetry and colorized point clouds.

    GeoCue, geocue.com

  • Advanced Navigation launches Boreas D70 digital fiber-optic gyroscope

    Advanced Navigation launches Boreas D70 digital fiber-optic gyroscope

    Photo: Advanced Navigation
    Photo: Advanced Navigation

    Advanced Navigation has announced the Boreas D70, a fiber-optic gyroscope (FOG) inertial navigation system (INS).

    The D70 is the latest release in the Boreas digital FOG (DFOG) series, offering a new performance grade with superior accuracy, exceptional stability and reliability. The technology is suited to surveying, mapping and navigation across subsea, marine, land and air applications.

    “We are thrilled to expand the Boreas series with the D70. It’s a system that will provide additional flexibility in the Boreas family, making ultra-high accuracy inertial navigation far more affordable than with previous FOG INS systems,” said Xavier Orr, CEO and co-founder of Advanced Navigation. “This patented technology opens the possibility for adopting FOG INS systems across a much broader range of vehicular applications, particularly autonomous vehicles and aircraft where weight and size are at a premium.”

    Boreas D70 combines closed-loop DFOG and accelerometer technologies with a dual-antenna real-time kinematic (RTK) GNSS receiver. These are coupled with Advanced Navigation’s artificial-intelligence-based fusion algorithm to deliver accurate and precise navigation.

    The system features ultra-fast gyrocompassing, acquiring and maintaining an accurate heading under demanding conditions. While the D70 does contain a GNSS receiver, it is not required for gyrocompass operation.

    Based on the company’s DFOG technology, the D70 delivers a 40% reduction in size, weight, power and cost (SWaP-C) when compared to systems of similar performance.

    • 0.01° roll and pitch
    • 0.1° secant latitude heading (gyrocompass)
    • 0.01°/hour bias instability
    • 10 mm position accuracy

    The Boreas Series

    The Boreas DFOG series features ultra-fast gyrocompassing and can acquire heading, either stationary or dynamically, in less than two minutes. The gyrocompassing allows the system to determine a highly accurate heading without any reliance on magnetic heading or GNSS.

    The technology stems from Advanced Navigation’s artificial intelligence sensor-fusion algorithm allowing the system to extract significantly more information from the data. It is designed for control applications, with a high level of health monitoring and instability prevention to ensure stable and reliable data.

    Advanced Navigation designed Boreas from the ground up for reliability and availability. The hardware and software are designed and tested to international safety standards and have been environmentally tested to MIL-STD-810. The system achieves a mean time between failure (MTBF) of more than 70,000 hours.

    Additional features of the Boreas D70 include Ethernet, CAN and NMEA protocols, as well as disciplined timing via a PTP server and 1 PPS. An embedded web interface provides full access to all of the device’s internal functions and data. Internal storage allows for up to 1 year of data logging.

    About DFOG Technology

    DFOG is patented technology, which has been developed over 25 years involving two research institutions. DFOG was created to meet the demand for smaller and more cost-effective FOGs, while increasing reliability and accuracy.

    The first generation of FOG, made available in 1976, used analog signals and analog-signal processing. The second generation was developed in 1994 and is still used to this day. It improved upon the first generation with a hybrid approach using an analog signal in the coil with digital signal processing.

    In 2021, FOG evolved into DFOG. This third generation of FOG sets itself apart by being completely digital, providing higher performance and reliability while enabling a 40% reduction in SWaP-C.

    To achieve this, three different yet complementary technologies have been developed to improve the capabilities of FOG.

    Digital Modulation Techniques. DFOG uses a specially developed digital modulation technique passing spread spectrum signals through the coil. The new digital modulation technique introduced in DFOG technology allows in-run variable errors in the coil to be measured and removed from the measurements. This makes DFOG significantly more stable and reliable than traditional FOGs. It also allows a smaller FOG with less coil length to achieve the accuracy of one with a longer coil.

    Revolutionary Optical Chip. By integrating five sensitive components into a single chip and removing all the fiber splices, the size, weight and power are reduced considerably while significantly improving reliability and performance.

    Specially Designed Optical Coil. DFOG employs a specially designed closed-loop optical coil, developed to take full advantage of the digital modulation techniques. The design allows for optimum sensing of in-run variable coil errors using the new digital modulation technique. It also provides a very high level of protection for the optical components from shock and vibration.