GPS World

Tag: MAC-SA5X

  • Launchpad: New modules, UAVs take flight

    Launchpad: New modules, UAVs take flight

    A roundup of recent products in the GNSS and inertial positioning industry from the March 2020 issue of GPS World magazine.

    OEM

    NavIC modules

    Support both L1 and L5 bands

    Photo: Allystar
    Photo: Allystar

    The dual-band multi-GNSS modules TAU1202 and TAU1205 support both the L1 and L5 bands to enhance sub-meter positioning accuracy. Constellations received include GPS, Galileo, GLONASS, BeiDou, QZSS and NavIC. Besides the L1 band, TAU1202 and TAU1205 also support L5/B2a/E5a, which are expected to have lower noise and significantly reduced multipath mitigation because of the higher chipping rate of L5 signals relative to L1 C/A code. TAU1205 supports NavIC (IRNSS), improving navigation in India and the Middle East. Powered by the Cynosure III GNSS chipset and with built-in low-noise amplifier and surface acoustic wave (SAW) filter, TAU1202 and TAU1205 provide higher sensitivity, ensuring exceptional acquisition and tracking performance even in weak signal areas.

    Allystar Technology, allystar.com

    L5 mass-market module

    Dual-Frequency chip uses new signals

    Photo: Broadcom
    Photo: Broadcom

    The BCM47765 dual-frequency GNSS module is capable of using the BeiDou-3 constellation’s B2a signals (the Chinese indicator for L5). It can track 30 new L5 signals (60% more) with a significant impact on accuracy. End users will experience much higher reliability of the submeter accuracy inherent to dual-frequency L1/L5. The enhanced L5 signal improves the accuracy of GNSS in an urban scenario by mitigating reflections from nearby buildings (multipath). It also improves GNSS in an open-sky scenario, allowing for submeter accuracy. Second generation dual-frequency GNSS will enable lane-level driving navigation, allowing applications to know in which highway lane a vehicle travels.

    Broadcom, broadcom.com

    Atomic clock

    Next-gen timing in a tiny package

    Photo: Microchip
    Photo: Microchip

    The MAC-SA5X miniaturized rubidium atomic clock is a high-performance atomic clock that delivers a wide thermal range, critical performance improvements and other enhancements over previous clocks. The MAC-SA5X produces a stable time and frequency reference that maintains a high degree of synchronization to a reference clock, such as a GNSS-derived signal. Its low monthly drift rate, short-term stability and stability during temperature changes allows the device to maintain precise frequency and timing during extended periods of holdover during GNSS outages or for applications where large rack-mounted clocks are not possible. Operating over a temperature range of –40 to +75 Celsius, the MAC-SA5X is designed to quickly achieve atomic stability performance with a fast lock.

    Microchip Technology, microchip.com

    Correction receiver

    Centimeter-level accuracy for consumer devices

    Photo: u-blox
    Photo: u-blox

    The NEO-D9S GNSS correction data receiver module provides an affordable approach to bringing centimeter-level accuracy to GNSS receivers. The NEO-D9S receives corrections from correction service providers broadcast on the L-band (1525–1559 MHz). A host processor can then decrypt this correction data and provide it to a high-precision GNSS receiver, combining corrections directly with readings from the satellite constellations to enable much more accurate position readings than those offered by GNSS signals alone. Use of the NEO-D9S will also increase the availability of high-precision GNSS positioning data in areas with limited connectivity and reduce the amount of cellular data consumed by positioning receivers. Expected customers are Tier 1 and OEM carmakers, industrial system integrators, and any other applications that rely on very accurate positioning at low cost. The NEO-D9S module is a correction-only receiver. Based on the latest u-blox ninth-generation (D9) platform, it will integrate easily with the u-blox F9 RTK GNSS receivers from u-blox, or can be used as part of a modular product roadmap.

    u-blox, u-blox.com

    Mobile platforms

    Dual-frequency systems on chip

    Image: Qualcomm
    Image: Qualcomm

    The Qualcomm Snapdragon 720G, 662 and 460 enable enhanced user experiences across connectivity, gaming and entertainment. The new mobile platforms support dual-frequency (L1 and L5) GNSS to improve location positioning accuracy and robustness. The system-on-chip solutions also support NavIC. For the first time on mobile, the Qualcomm Location Suite supports up to seven satellite constellations concurrently, including NavIC.

    Qualcomm Technologies, qualcomm.com

    UAV

    Survey drone

    VTOL option available

    Photo: FlyTech UAV
    Photo: FlyTech UAV

    Dedicated to surveying and agriculture, the UAV Birdie is tailor-made, combining intuitive use and high-quality data through precise sensors and GPS RTK L1/L2 onboard. Features include a 24-megapixel camera or optional full-frame 42-megapixel camera; flight time up to 60 minutes; and coverage up to 8 square kilometers in one flight. A vertical-takeoff-and-landing (VTOL) upgrade is available.

    FlyTech UAV, flytechuav.com

    Inspection drone

    Five-hour flight time

    Photo: Skyfront
    Photo: Skyfront

    Skyfront’s Perimeter 8 drone is equipped with Silvus Technologies’ SteamCaster Radio system, a powerful user-customizable radio system for the military, police and broadcast. The new long-range drone will allow operators to inspect pipelines and other assets as well as conduct long-range surveillance missions. The octocopter can fly for five hours and travel up to 100 kilometers without losing connection from the ground station. Currently, five models are available to suit uses including mapping, lidar and medium, long, or extra-long surveillance. SteamCaster radio system uses the latest beam-forming technology, spatial multiplexing, and space-time coding to ensure the drone can be controlled in environments in which other radio systems are likely to fail. The combination of the technologies allows the range to be increased from 40% to 100%. SteamCaster comes with SteamScape, a network management interface to allow for key metrics and statistics to be viewed and collected in real time. The system also allows the drone to be overlayed onto a map showing the current location and path of the drone.

    Skyfront, skyfront.com
    Silvus Technologies, silvustechnologies.com

    Transformable drone

    Delivers critical tools on the ground or in the air

    Photo: Robotic Research
    Photo: Robotic Research

    The Pegasus Mini is a smaller version of the Pegasus, a hybrid unmanned aircraft system/unmanned ground vehicle. The Pegasus hybrid UAS/UGV configuration delivers advanced GPS-denied mapping with fully autonomous high-speed flying and driving capabilities. Pegasus Mini is designed to provide the extra reach that a UAV or UGV alone cannot provide. Uses include inspection, rescue, rapid response, and applications that strongly benefit organizations in oil and gas, public transportation, law enforcement, public safety, and more.

    Robotic Research, roboticresearch.com

    Electric drone

    ISR UAV designed for long flight

    Photo: Silent Falcon UAS Technologies
    Photo: Silent Falcon UAS Technologies

    The Silent Falcon E1 UAV has completed 500 hours of successful flight testing and operations. It’s maker, Silent Falcon UAS Technologies (SFUAS), is based in Albuquerque, New Mexico. The E1 solar-electric, fixed-wing UAV is noise free, emission free, and provides long-range, low-cost intelligence, surveillance and reconnaissance (ISR) capability. It has a payload capacity of 20 pounds and a ceiling of 20,000 feet above ground level. SFUAS has an application pending before the FAA for type certification of the E1. The 500-hour milestone confirms for federal regulators that it is safe and durable. Silent Falcon aircraft have operated in eight foreign countries and are not ITAR restricted.

    Silent Falcon UAS Technologies, silentfalconuas.com

    High-definition GNSS

    Enables submeter positioning

    Image: HERE Technologies
    Image: HERE Technologies

    The High Definition (HD) GNSS cloud-based solution enables mass-market devices to achieve sub-meter accuracy across the globe. HD GNSS enables lane-level navigation, augmented reality and virtual reality. It combines precise point positioning (PPP) and real-time kinematic (RTK) positioning methods, allowing for fast convergence time, high availability and global coverage. It also supports off-the-shelf mobile devices and internet of things (IoT) trackers equipped with dual-frequency chipsets.

    HERE Technologies, here.com

    GNSS/INS module

    Open design for developers

    Photo: Aceinna
    Photo: Aceinna

    The OpenRTK330L GNSS/INS module is designed for developers creating guidance and navigation systems for autonomous vehicles, robots, drones, industrial, construction and agricultural machinery. OpenRTK330L is a low-cost, high-performance triple-band RTK/GNSS receiver coupled with redundant inertial sensor arrays to provide cm-level accuracy, enhanced reliability, and superior performance during GNSS outages. The module is aimed at automotive, robot, drone, construction and agriculture systems. The multi-band GNSS receiver can monitor all global constellations (GPS, GLONASS, BeiDou, Galileo, QZSS, NavIC, SBAS) and simultaneously track up to 80 channels. The module has RF and baseband support for the L1, L2 and L5 GPS bands and their international constellation signal equivalents.

    Aceinna, aceinna.com

  • Microchip’s new atomic clock improves performance, yet stays small

    Microchip’s new atomic clock improves performance, yet stays small

    Microchip releases MAC-SA5X, enhancing its miniature atomic clock (MAC) technology to deliver wider temperature range and rapid warm-up time

    As reliance on precise frequency and timing increases due to GNSS enabling 5G communication networks, data centers and other mission critical infrastructure, smaller size and high-performance atomic clock technology has become essential to supporting both military and commercial applications.

    To meet demand for a small-footprint atomic clock, Microchip Technology released a higher performance atomic clock for its size and power. The new device also delivers a wider thermal range, critical performance improvements and other enhancements over previously available technology, the company said.

    Next-Gen Timing. Microchip’s next-generation MAC-SA5X miniaturized rubidium atomic clock produces a stable time and frequency reference that maintains a high degree of synchronization to a reference clock, such as a GNSS-derived signal.

    Its combination of low monthly drift rate, short-term stability and stability during temperature changes allows the device to maintain precise frequency and timing requirements during extended periods of holdover during GNSS outages or for applications where large rack-mount clocks are not possible.

    Image: Microchip
    Image: Microchip

    Operating over a wider temperature range of -40 to +75 Celsius, the MAC-SA5X was designed to quickly achieve atomic stability performance by taking less time to lock compared to some of the existing clock technology, Microchip said. In an aircraft application, for example, these attributes enable faster power up of critical communication and navigation systems in extreme climates.

    The MAC-SA5X allows system developers to avoid the need for extra circuitry by integrating a one pulse per second (1PPS) input pin for fast frequency calibration, saving time and development cost. In addition, the MAC-SA5X is designed with the same footprint as previous generation miniature atomic clock technology, reducing the development time to transition to the newer, higher performance device.

    “As an industry leader, Microchip continues to invest in next-generation atomic clock technology for Department of Defense programs, mission-critical infrastructure and networks that require a high degree of accuracy in timekeeping and synchronization,” said Randy Brudzinski, vice president and general manager of Microchip’s frequency and time business unit. “The MAC-SA5X adds several performance and feature enhancements while retaining the same footprint as the previous generation MAC-SA.3X products, enabling customers to easily transition to the new technology.”

    Designed and manufactured in the U.S., the MAC-SA5X operates to the following additional specifications:

    • <5.0E-11 frequency stability over operating temperature;
    • <5.0E-11 per month aging rate; 6.3-watt power consumption;
    • 47 cc in volume.

    The MAC-SA5X provides backward compatibility with its predecessor MAC-SA.3Xm family and comes in an ovenized crystal oscillator (OCXO)-sized package of 50.8 mm x 50.8 mm.

    Microchip has delivered more than 275,000 rubidium clocks, 120,000 chip-scale atomic clocks (CSACs), 12,500 Cesium clocks and 200 active hydrogen masers to customers worldwide.

    Development Tools. The MAC-SA5x family of atomic clocks is supported by evaluation kit 090-44500-000.

    Availability. The MAC-SA5X atomic clock is available now for pre-sampling, and will be available for deliveries in February. Microchip supports the MAC-SA5X with technical support services as well as an extended warranty.