GPS World

Tag: GPS anti-jam antenna

  • Quantum Reversal releases GPS L1/L2 anti-jamming unit and antenna

    Quantum Reversal releases GPS L1/L2 anti-jamming unit and antenna

    Photo: Quantum Reversal
    Photo: Quantum Reversal

    Quantum Reversal has released the QR100, a novel L1/L2 GPS anti-jamming unit, and the QR101, an  L1/L2 GPS anti-jamming antenna, designed for the commercial market to solve the issue of unintentional RF interference or jamming.

    The QR100 uses three external passive or active GPS antennas of the user’s choice, while the QR101 has three passive L1/L2 antennas embedded inside the enclosure. Low power consumption of 1 Watt and low cost allow for a wide range of applications where the continuity of GPS service is a must.

    “Clever RF signal nulling in the RF domain allowed us to eliminate the need for signal processing, and hence, significantly reducing the power consumption when compared to existing military solutions,” said Waldemar Kunysz, Quantum Reversal President and CTO.

    The technology prevents the RF front-end from saturation when the interfering signal is very strong due to its power or close proximity to the antenna. This extends the range of the operation for mobile applications and reduces susceptibility to nearby sources of interference for any type of fixed installations.

    Learn more at the company’s website.

  • Cobham launches next-generation GPS anti-jam system at Paris Air Show

    Cobham launches next-generation GPS anti-jam system at Paris Air Show

    Cobham Antenna Systems has launched its next-generation anti-jam GPS system.

    The system provides significant immunity to jamming compared with a conventional GPS antenna, allowing the platform to operate over 100 times closer to the jammer whilst maintaining its GPS reception, the company said.

    The system will be available to view on Cobham’s stand, hall 2b, stand E156, at the International Paris Air Show, which is taking place June 19-25.

    The compact size and modularity of the DACU and CRPA, as well as being receiver independent, means that the system can be installed in land and marine applications. (Photo: Cobham)

    “Cobham has been a global leader in development of anti-jam technology for over 20 years, and we are delighted to be launching launch our next generation anti-jam GPS system at Paris Air Show,” said David Bulley, vice president of Cobham Antenna Systems. “The system provides significant immunity to intentional or unintentional jamming compared with a conventional GPS antenna, thereby protecting mission critical systems that require assured position, navigation and timing information from GPS.”

    The system consists of a 7-6005 anti-jam GPS digital antenna control unit (DACU) and a four-channel 20-7009 anti-jam GPS controlled reception pattern array (CRPA) antenna. Both units meet stringent airborne requirements making them ideal for new installations and retrofitting to fixed-wing, rotary-wing and UAV platforms.

    The compact size and modularity of the DACU and CRPA, as well as being receiver independent, means that the system can also be installed in land and marine applications so offering a single solution for all platforms.

    The high-performance, four-channel antenna and electronic system, offers the optimum balance between size, weight, power and cost. Intelligent, dual-band protection is provided with processing optimized to combat the threat environment.

  • Canadian Army to Test NovAtel GPS Anti-Jam Antenna

    Canadian Army to Test NovAtel GPS Anti-Jam Antenna

    NovAtel's GAJT-AE GPS anti-jam antenna.
    NovAtel’s GAJT-AE GPS anti-jam antenna.

    Public Works and Government Services Canada (PWGSC) has selected NovAtel’s GAJT-AE antenna electronics for testing on Canadian Army platforms. The GAJT-AE, developed in Calgary at NovAtel’s global headquarters, is a GPS anti-jam solution suitable for small and weight constrained applications. The testing is being conducted through PWGSC’s Build in Canada Innovation Program (BCIP).

    PWGSC will procure a number of GAJT-AE’s on behalf of the Department of National Defence (DND). The Director Land Requirements (DLR), with the assistance of the Quality Engineering Test Establishment (QETE), will oversee all testing on DND’s behalf. Field testing is expected to take place in the latter half of 2015 at 4th Canadian Division Support Garrison Petawawa.

    The testing will analyze the performance of GAJT-AE on Canadian Army equipment in operational conditions to confirm the suitability and robustness of the NovAtel technology for this role. The process is expected to be completed by the end of March 2016.

    GAJT is a null-forming technology that negates jammers, ensuring the satellite signals necessary to compute position and time are always available. Three categories of GAJT are manufactured by NovAtel:

    • GAJT-710ML: for use with military land vehicles, networks and timing infrastructure
    • GAJT-710MS: for marine vessels, from small boats to capital ships
    • GAJT-AE: for use with an external antenna in size and weight constrained applications

    “NovAtel has had great success working closely with the Canadian Army on the previous round of BCIP,” said Jason Hamilton, NovAtel’s vice president of marketing. “It is essential to have military users test our products in operational scenarios. We look forward to the valuable feedback that the Canadian Army testing of GAJT-AE GPS anti-jam antenna electronics will provide. NovAtel will use this feedback to continue developing products in support of Canada and its Allied partners.”

    The BCIP was created by the Government of Canada to strengthen Canadian innovation. The program offers procurement and testing of pre-commercialized products and services, at a late stage of development. The BCIP:

    • Bridges the “pre-commercialization gap”
    • Supports Canadian suppliers by connecting innovators and government users and by testing innovations
    • Provides real-world evaluation of pre-commercial goods and services
    • Improves the efficiency and effectiveness of government operations.

  • NovAtel Talks GPS Anti-Jam Technology for Use in UAVs

    NovAtel’s Peter Soar shares on the company’s GAJT (“Gadget”), a single unit GPS anti-jam antenna for use in UAVs (unmanned aerial vehicles). GAJT nullifies jammers, ensuring satellite signals necessary to compute position and time are always available.

    GAJT may integrate into unmanned vehicle platforms or can be retrofitted with GPS receivers and vehicle navigation systems on military fleets.