GPS World

Tag: Michael Swiek

  • Editorial Advisory Board Q&A: The fate of the SAASM P(Y) code

    Editorial Advisory Board Q&A: The fate of the SAASM P(Y) code

    Photo: Editorial Advisory Board

    The U.S. military is transitioning to M-code. When the transition is complete, what will become of the SAASM P(Y) code? What should be done with it? Should the U.S. government use it as a public authenticated service?

    Jules McNeff
    Jules McNeff

    “In my opinion (not speaking on behalf of the Defense Department), eventual use of the P(Y) code as a public authenticated service is not feasible based on both time and accessibility. Even with the transition to M-code, the legacy P(Y) code will continue to be used by the U.S. military and by U.S. allies and partner nations as long as there are military requirements for it. More importantly, public access to the encrypted P(Y) code would require general distribution of classified cryptographic keys and associated hardware/software by the DOD. That will not happen, even if the P(Y) code use is discontinued.”
    Jules McNeff
    Overlook Systems Technologies

    Bernard Gruber
    Bernard Gruber

    “Broadly speaking, GPS user equipment security architectures transition every 10 years (such as PPS-SM/AOCs to SAASM to Modernized CGM/MSI.) It can be argued that implementation of these security measures generally takes 10 years or longer to implement. SAASM P(Y) receivers will be around for a long time, implementation can be expensive, backwards compatibility is critical. Personally, I would like to see SAASM architectures evolve to support critical services within other U.S. government departments first, and then determine a path that supports a public service as threats, unfortunately, move forward.”
    Bernard Gruber
    Northrop Grumman

    Photo: Orolia
    John Fischer

    “Why not? Authentication protects against spoofing. I don’t know all the obstacles involved, but even if an internet connection is required to overcome the one-way limitation of GPS, that isn’t a problem for most applications. Our credit card transactions are secured this way, why not our PNT information? Decades ago, the U.S. Air Force gave the world a gift with the open GPS signal; they could do it again with a secure signal. The world would be a better place.”
    John Fischer
    Orolia

    F. Michael Swiek
    F. Michael Swiek

    “It’s premature to forecast when military operations will transition from P(Y) code even after M-code operations achieve Initial and Final Operating Capability (IOC and FOC). SAASM P(Y) code will continue to support military operations for an extended period since all MGUE receivers (both increments 1 and 2) are YMCA capable, meaning they support P(Y) code, M-code and C/A code operations. As a military-encrypted signal with military utility, military leaders must carefully weigh any potential P(Y) code transition and its impact on military operations.”
    Michael Swiek
    GPS Alliance

    Ellen Hall
    Ellen Hall

    “If P(Y) code is offered as a new service to the public, it will have to be maintained. This carries a great cost. This is a legacy product that had a specific military need, which has been replaced and improved upon by M-code. In today’s uncertain times, we need to be wise with our tax dollars. The cost to continue both SAASM and M-code is greater than the benefit to the public, in my opinion.”
    Ellen Hall
    Spirent Federal Systems

     

    Feature photo: U.S. Marine Corps/Capt. Joshua Hays

  • Editorial Advisory Board Q&A: Public or private sector?

    All four current GNSS and two regional systems have been built and are operated by public agencies. Many correction services and complementary PNT services are operated by private companies. 

    Going forward, what do you expect the division of labor to be between the public and private sectors in building and maintaining PNT capabilities? What should it be?

    Ellen Hall
    Ellen Hall

    “The space race was championed by governments. Space travel, communications and other technologies were born from government exploration into space. Today we see many private companies engaged in space. Several are intent on supplementing GNSS navigation, and some envision competing. Private companies have a way to go if they plan to compete with systems like GPS, but competition is often at the center of innovation and may benefit everyone.”
    — Ellen Hall
    Spirent Federal Systems 

    Jules McNeff
    Jules McNeff

    “GNSS and regional systems are established and sustained to meet the needs of the governments and public agencies that operate them. They cover wide areas and provide services to extremely diverse user communities at levels of performance based on resources that are justified by user requirements and limited by technical affordability. When the global/regional service levels don’t meet the needs of a particular user group or require backup for security, the opportunity is opened for other agencies or private companies to create augmentations and complements to meet the additional needs. The mix is variable and will be determined by the user groups and the market.”
    — Jules McNeff
    Overlook Systems Technologies 

    F. Michael Swiek
    F. Michael Swiek

    “There is really no single ‘correct’ answer or specific division of labor between public- and private-sector entities in GNSS. The situation we see today is the result of decades of constructive and successful ad hoc evolution of roles among and between public- and private-sector entities. Public agencies are better suited to provide foundation technologies and infrastructure due to the large costs and long timelines associated with establishing the constellations and maintaining stable and consistent service. The private sector is better positioned to provide variety and timely flexibility in developing innovative solutions to the broad range of constantly emerging user requirements across all market segments. This unofficial and continually evolving division of labor has worked successfully and continues to adapt to the evolving world of PNT.”
    —Michael Swiek
    GPS Alliance